—$94.99

Cane Creek Headset Uppers Replaces 110 ZS headset top Zero Stack (ZS) assemblies feature press-in cups with bearings inside the frame 15mm stack height (tall) top cover Internally contoured and relieved cups and covers minimize weight and maximize strength Top-quality polishing, anodizing and laser etching Low-friction top cover seal completely seals cup from solid and liquid contaminants Fully captured top cover - no loose parts Updated compression ring design further enhances "carbon friendly" uses by evenly distributing clamping forces on the steerer Interlok spacer compatible Item Specifications Color Black Weight 60g Material AL-7075 Stack Height 15mm Bearing Type Stainless Steel S.H.I.S Upper ZS44 S.H.I.S. Clamp Diameter 28.6 Cane Creek 110 ZS Headset Headset Upper UPC: 840226096063

by Cane Creek

—$44.99

Cane Creek 40-Series EC(External Cups) assemblies feature press-in cups with bearings outside the frame. The 40-Series is the workhorse of Cane Creek's headset line-up. Representing the balance of performance, durability and value, the series incorporates all the features necessary for a robust, lightweight, long-lasting headset. Replaces Cane Creek XXcII Traditional Bottom headset External Cup (EC) assemblies feature press-in cups with bearings outside the frame Item Specifications Color Black Weight 99g Material AL-6061 Crown Race 30.0 Stack Height 12mm Bearing Type Black Oxide Sealed S.H.I.S Lower EC49 Cane Creek 40-Series EC - External Cup Headset Headset Lower UPC: 840226094823

by Cane Creek

—$11.99

Carbon fiber headset stack spacers, precision cut to ensure proper headset function.Compatible with all threadless and threaded headsets Item Specifications Color Matte Carbon Defined Color Black Material Carbon S.H.I.S. Stem Clamp Diameter 28.6 Thickness 10 Wheels Manufacturing Carbon Spacer Headset Stack Spacer UPC: 811079026385

by Wheels Manufacturing

—$42.95

Drop in lower assmbly with crown race. For 1-1/2" steerer Alloy Cups Bearing: Sealed cartridge, Ti-coated 45/45 degree angular contact bearing Titanium coated for corrosion resistance Item Specifications Bearing Type Cartridge Color Gold Crown Race 40 S.H.I.S Lower IS52 Ritchey Lower Headset Assembly Headset Lower UPC: 796941332613

by Ritchey

—$46.99

40-Series External Cup headsets set the standard for performance, durability and value. Drawing from the premium 110-Series design, the 40-Series includes all the features necessary for a durable, lightweight, long-lasting headset. Compatible with tapered 1-1/8" to 1-1/4" steerer tubes Sealed ZN40 cartridge bearings 6000 series alloy cups and materials Steel crown race with integrated seals Interlok spacer compatible Item Specifications Bearing Type Cartridge Color Black Crown Race 33 Lower Stack Height 12 S.H.I.S Lower EC44 Weight 65 Cane Creek 40-Series EC - External Cup Headset Headset Lower UPC: 840226077758

by Cane Creek

—$14.39

It's a stack spacer. It's a top cap. It's both! The Ultralight stem cap is designed specifically for carbon steerers that require that the steer tube extend above the stem. 1 1/8" top (straight 1 1/8" or 1 1/2" to 1 1/8" taper) steerer tubes only Light-weight and durable 6061-T6 aluminum Item Specifications Color Espresso Defined Color Brown Wolf Tooth Ultralight Stem Cap with Integrated Spacer Headset Top Cap UPC: 810006806441

by Wolf Tooth

—$59.99

Featuring some of the lowest stack height bearing cover options available, with premium stainless steel Hellbender bearing and 6061 T-6 Aluminum cups and covers, the Hellbender 70 Slam is a premium headset created for riders seeking to lower their handlebars as low as possible without compromising bearing longevity and proper preload. Item Specifications Bearing Type Cartridge Color Black S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Cane Creek Hellbender 70 Slam Upper Headset Headset Upper UPC: 840226090931

by Cane Creek

—$29.95

Wolf Tooth Performance Headsets feature Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Crown Race 40 S.H.I.S Lower IS52 Wolf Tooth Performance IS Lower Headset Headset Lower UPC: 810006803440

by Wolf Tooth

—$34.95

Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Custom molded dual-lip seal on the crown race to protect lower bearing in the toughest conditions Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Blue Crown Race 40 S.H.I.S Lower EC44 Wolf Tooth Performance EC Lower Headset Headset Lower UPC: 810006803228

by Wolf Tooth

—$14.46

Wolf Tooth Headset Spacers for Trek Knock Block are machined in the USA out of aircraft grade aluminum. Compatible with Trek Knock Block system These spacers have unique raised features that key to Knock Block compatible stems (made by Bontrager) 1 1/8" top (straight 1 1/8" or 1 1/8" to 1 1/2" taper) steerer tubes only Item Specifications Color Black Defined Color Black keyword search Trek Knock Block Material Aluminum S.H.I.S. Stem Clamp Diameter 28.6 Thickness 10 Wolf Tooth Knock Block Headset Spacer Headset Stack Spacer UPC: 810006802597

by Wolf Tooth

—$52.99

Cane Creek 40-Series. The 40-Series is the workhorse of Cane Creek's headset line-up. Representing the balance of performance, durability and value, the series incorporates all the features necessary for a robust, lightweight, long-lasting headset. Replaces Cane Creek IS-3i headset 41.8mm angular contact bearings feature 36degree inner chamfer, 45degree outer (36/45) Directly compatible with 42mm Italian head-tube but not 45/45 crown races or compression rings - uses 36/45 crown race and compression ring Integrated (IS) assemblies feature chamfers molded inside the head-tube with no press-in cups 9mm stack height (short) top cover Item Specifications Color Black Weight 72g Material AL-6061 Crown Race 30.0 Stack Height 9mm Bearing Type Black Oxide Sealed Defined Color Black S.H.I.S Upper IS42 S.H.I.S Lower IS42 S.H.I.S. Clamp Diameter 28.6 Cane Creek 40-Series IS - Integrated Headset Headsets UPC: 840226095080

by Cane Creek

—$22.31

The absoluteBLACK integrated headset top cap is a one-piece top cap and bolt, with 5mm hex socket. It is designed to fit every standard starnut. One piece design is lightweight (only 4g) Not suitable for "expanding" star nuts with a steel coil spring Compatible with the ENVE compression plug Item Specifications Color Red Defined Color Red Includes Star Nut No absoluteBLACK Integrated Headset Top Cap and Bolt Headset Top Cap EAN: 5110846001903

by absoluteBLACK

—$29.99

Hellbender bearings have an improved seal structure and are cross compatible with Cane Creek headsets. Item Specifications Bearing I.D. (mm) 30.3 Bearing O.D. (mm) 41.8 Bearing Type Cartridge Cartridge Bearing Angle 36x45 Thickness 6.5 Cane Creek Hellbender Headset Bearing Headset Bearing UPC: 840226078151

by Cane Creek

—$10.40

If you're upgrading to a new headset and looking to add some vibrancy to make your bike shine, you'll love the Hellbender 70 Top Cap. Available in various colors, you can infuse a touch of personalized style into your ride.Compatible with all 1-1/8 threadless headset uppers Item Specifications Color Silver Defined Color Silver S.H.I.S. Stem Clamp Diameter 28.6 Cane Creek Hellbender 70 Chroma Studio Top Cap Headset Top Cap UPC: 840226140902

by Cane Creek

—$34.99

Hellbender Lite bearings have an improved seal structure and are cross compatible with Cane Creek headsets. Item Specifications Bearing O.D. (mm) 52 Bearing Type Cartridge Cartridge Bearing Angle 36x45 Cane Creek Hellbender Lite Headset Bearing Headset Bearing UPC: 840226091143

by Cane Creek

—$34.95

Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Custom-molded dual-lip seal on the crown race protects lower bearing in the toughest conditions Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Red Crown Race 40 S.H.I.S Lower ZS56 Wolf Tooth Performance ZS Lower Headset Headset Lower UPC: 810006803617

by Wolf Tooth

—$74.95

The Ritchey Logic WCS threadless headset features angular-contact cartridge bearings with a lifetime guarantee.Logic WCS uses angular-contact cartridge bearings with a lifetime guarantee Item Specifications Color Black Weight 110g Material Aluminum Crown Race 30.0 Stack Height 28mm Bearing Type Cartridge Defined Color Black S.H.I.S Upper EC34 S.H.I.S Lower EC34 S.H.I.S. Clamp Diameter 28.6 Ritchey WCS Logic Threadless Headset Headsets UPC: 796941330763

by Ritchey

—$36.99

Cane Creek Headset Uppers Innovative Clip-Seal seals the top assembly and captures the compression ring Internal parts are cross-compatible across 10, 40 and 110 series Consistent stack heights across 10, 40 and 110 series Item Specifications Color Black Weight 42g Material AL-6061 Stack Height 15mm Bearing Type Black Oxide Sealed S.H.I.S Upper IS41 S.H.I.S. Clamp Diameter 28.6 Cane Creek 40-Series IS - Integrated Headset Headset Upper UPC: 840226095134

by Cane Creek

—$119.90

Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Uppers and lowers sold together as a set Enduro stainless steel sealed bearings and O-ring seals prevents water intrusion around steerer tube included on both the upper and lower system Ultralight stem cap with integrated spacer plus an aluminum bolt and a star nut, 6 mm stack height top cover only Lifetime warranty Item Specifications Bearing Type Cartridge Color Olive Crown Race 40 Defined Color Green Material Alloy S.H.I.S Lower ZS56 S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 6 Wolf Tooth Premium Headset Headsets UPC: 810006808483

by Wolf Tooth

—$79.99

40-Series Zero Stack headsets set the standard for performance, durability and value. Drawing from the premium 110-Series design, the 40-Series includes all the features necessary for a durable, lightweight, long-lasting headset. Sealed ZN40 cartridge bearings 6000 series alloy cups and materials Steel crown race with integrated seals Interlok spacer compatible Item Specifications Bearing Type Cartridge Color Black Crown Race 30 Defined Color Black S.H.I.S Lower ZS56 S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Cane Creek 40-Series ZS - Zero Stack Headset Headsets UPC: 840226077413

by Cane Creek

—$104.95

The GeoShift Performance Angle Headset allows you to adjust the geometry of your bike by changing the head tube angle, available in 1 or 2 degree options. This unique design lets the bearings sit at an angle to align with the steerer tube, preventing creaking noises commonly found with angle headsets that feature a spherical design. Reduce the head tube angle to make for slacker geometry and added stability on fast descents, or increase the angle using the opposite orientation of the headset, to make for steeper geometry and quicker steering with maximum front wheel traction. 2 Degree Adjustment Long version is designed for headtube lengths between 115 - 140 mm Enduro black oxide coated chromium steel bearing included on both the upper and lower Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately) Machined in the USA with lightweight, strong, durable aircraft-grade 6061 aluminum Includes: Upper and lower cups, bearings, crown race, star nut, shims, stem cap with 5mm integrated spacer and bolt Item Specifications Bearing Type Cartridge Color Black Crown Race 40 Defined Color Black Lower Stack Height 4.5 Material Alloy S.H.I.S Lower ZS56 S.H.I.S Upper EC44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Stack Height 20.4 Upper Stack Height 15.9 Wolf Tooth GeoShift Performance Angle Headset Headsets UPC: 810006805376

by Wolf Tooth

—$176

The Chris King DropSet 3 Headset features their GripLock bearing cap that preloads the headset independently of clamping onto the steerer, so it retains preload far better than other headset designs. The DropSet 3 is impervious to the ill effects of load spikes from large hits and heavy braking. This means smoother steering, no more creaking, and a longer lasting headset. GripLock design also takes the guesswork out of preloading a headset, because the bearing preload force is independent of the clamping force DropSet 3 headsets can be preloaded to a torque spec 41mm 45x45 upper bearing / 52mm 36x45 lower bearing DropSet 3 headsets with their legendary made-in-house bearings are engineered, manufactured and assembled in Portland, Oregon USA Includes baseplate and 36 degree integrated crown races Features the King Lifetime Warranty Item Specifications Bearing Type Cartridge Color Black Crown Race 40 Defined Color Black S.H.I.S Lower IS52 S.H.I.S Upper IS41 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Chris King DropSet 3 Headset Headsets UPC: 841529091564

by Chris King

—$17.58

Carbon fiber headset stack spacers, precision cut to ensure proper headset function.Compatible with all threadless and threaded headsets Item Specifications Color Matte Carbon Defined Color Black Material Carbon S.H.I.S. Stem Clamp Diameter 28.6 Thickness 2.5 Wheels Manufacturing Carbon Spacer Headset Stack Spacer UPC: 811079026347

by Wheels Manufacturing

—$34.95

Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Lower Bearing, includes race Black Oxide Bearings are made from chromium steel for high load capacity and durability Custom-molded dual-lip seal on the crown race protects lower bearing in the toughest conditions Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Blue Crown Race 40 S.H.I.S Lower ZS56 Wolf Tooth Performance ZS Lower Headset Headset Lower UPC: 810006803556

by Wolf Tooth

—$20

Available in the most common sizes and thicknesses-in small or bulk quantities, Problem Solvers headset spacers help riders get their stack height just right. Bag of 10, Silver 1-1/8" Diameter Made from Aluminum, anodized or polished finish, without logos Item Specifications Color Silver Defined Color Silver Material Aluminum S.H.I.S. Stem Clamp Diameter 28.6 Thickness 10 Problem Solvers Headset Spacers Headset Stack Spacer UPC: 708752291638

by Problem Solvers

—$59.95

Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless steel bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Ultralight stem cap with integrated spacer, plus an aluminum bolt and a star nut O-ring seal prevents water intrusion around the steerer tube Custom-molded upper lip seal provides additional protection for upper bearing Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Black S.H.I.S Upper IS41 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 7 Wolf Tooth Premium IS Upper Headset Headset Upper UPC: 812719028059

by Wolf Tooth

—$36.95

Drop in upper assembly with top cap, starnut and cap for 1-1/8" steerer. 45/45 degree angular contact bearing Titanium coated for corrosion resistance Item Specifications Bearing Type Cartridge Bearing Type Sealed Bearing Color Black Defined Color List Black S.H.I.S Upper IS42 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Ritchey Upper Headset Assembly Headset Upper UPC: 796941332422

by Ritchey

—$84.99

Cane Creek 110 EC Headset Lowers 110 version of former Cane Creek XX-44 bottom For use with 1.5" threadless steerer tube bottom (40mm crown race seat diameter, tapered steerer tube) Converts 44mm head-tube bottom for use with 1.5" 40mm crown race forks External Cup (EC) 44mm Bottom Assembly enables use of tapered steerer tube Item Specifications Color Black Weight 58.2g Material AL-7075 Crown Race 39.7 Stack Height 12mm Bearing Type Stainless Steel S.H.I.S Lower EC44 Cane Creek 110-Series EC - External Cup Headset Headset Lower UPC: 840226095998

by Cane Creek

—$104.95

The GeoShift Performance Angle Headset allows you to adjust the geometry of your bike by changing the head tube angle, available in 1 or 2 degree options. This unique design lets the bearings sit at an angle to align with the steerer tube, preventing creaking noises commonly found with angle headsets that feature a spherical design. Reduce the head tube angle to make for slacker geometry and added stability on fast descents, or increase the angle using the opposite orientation of the headset, to make for steeper geometry and quicker steering with maximum front wheel traction. 1 Degree Adjustment Short version is designed for headtube lenghts between 90 - 115 mm Enduro black oxide coated chromium steel bearing included on both the upper and lower Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately) Machined in the USA with lightweight, strong, durable aircraft-grade 6061 aluminum Includes: Upper and lower cups, bearings, crown race, star nut, shims, stem cap with 5mm integrated spacer and bolt Item Specifications Bearing Type Cartridge Color Black Crown Race 40 Defined Color Black Lower Stack Height 12.5 Material Alloy S.H.I.S Lower EC44 S.H.I.S Upper EC44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Stack Height 27.8 Upper Stack Height 15.3 Wolf Tooth GeoShift Performance Angle Headset Headsets UPC: 810006805260

by Wolf Tooth

—$143.99

The Cane Creek 110 IS Headset fits a 1-1/8" threadless steerer tube to a 1-1/8" Integrated head tube. Compression ring captured in top cover, keeps any needed shims in place Stainless bearings feature Split-Lip seals for twice the protection of a typical cartridge bearing Includes adjusting bolt, star-nut, aluminum top cap and aluminum crown race Item Specifications Color Black Weight 67g Material AL-7075 Crown Race 30.0 Stack Height 9mm Bearing Type Stainless Steel Defined Color Black S.H.I.S Upper IS41 S.H.I.S Lower IS41 S.H.I.S. Clamp Diameter 28.6 Cane Creek 110-Series IS - Integrated Headset Headsets UPC: 840226096124

by Cane Creek

—$22.99

ZN40-Series bearings are corrosion-resistant zinc-coated, machined steel cartridge bearings with hardened steel balls, which vastly increases the longevity of your headset.Compatible with 110-, 40-, and 10-Series headsets Item Specifications Bearing O.D. (mm) 49 Bearing Type Cartridge Cartridge Bearing Angle 36x45 Cane Creek ZN40-Series Bearing Headset Bearing UPC: 840226084367

by Cane Creek

—$94.99

Cane Creek Headset Uppers Replaces 110 IS headset top 41mm angular contact bearings feature 36degree inner chamfer, 45degree outer (36/45) Integrated (IS) assemblies feature chamfers molded inside the head-tube with no press-in cups 9mm stack height (short) top cover Internally contoured and relieved cups and covers minimize weight and maximize strength Top-quality polishing, anodizing and laser etching Low-friction top cover seal completely seals cup from solid and liquid contaminants Fully captured top cover - no loose parts Updated compression ring design further enhances "carbon friendly" uses by evenly distributing clamping forces on the steerer Interlok spacer compatible Item Specifications Color Black Weight 41.8g Material AL-7075 Stack Height 9mm Bearing Type Stainless Steel S.H.I.S Upper IS41 S.H.I.S. Clamp Diameter 28.6 Cane Creek 110 IS Headset Upper UPC: 840226096148

by Cane Creek

—$45

Headset spacer kits are turned from solid bar-stock to ensure precise and parallel surfaces and guarantee proper headset preload. And they look great too.Kits includes a 3mm, 2x 6mm, and 2x 12mm, spacers Item Specifications Color Silver Defined Color Silver Material Aluminum S.H.I.S. Stem Clamp Diameter 28.6 Threadless Thickness 12 Thickness 3 Thickness 6 Chris King Spacer Kit 2 Headset Stack Spacer UPC: 841529201840

by Chris King

—$104.95

The GeoShift Performance Angle Headset allows you to adjust the geometry of your bike by changing the head tube angle, available in 1 or 2 degree options. This unique design lets the bearings sit at an angle to align with the steerer tube, preventing creaking noises commonly found with angle headsets that feature a spherical design. Reduce the head tube angle to make for slacker geometry and added stability on fast descents, or increase the angle using the opposite orientation of the headset, to make for steeper geometry and quicker steering with maximum front wheel traction. 2 Degree Adjustment Short version is designed for headtube lenghts between 90 - 115 mm Enduro black oxide coated chromium steel bearing included on both the upper and lower Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately) Machined in the USA with lightweight, strong, durable aircraft-grade 6061 aluminum Includes: Upper and lower cups, bearings, crown race, star nut, shims, stem cap with 5mm integrated spacer and bolt Item Specifications Bearing Type Cartridge Color Black Crown Race 40 Defined Color Black Lower Stack Height 13 Material Alloy S.H.I.S Lower EC44 S.H.I.S Upper EC44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Stack Height 28.9 Upper Stack Height 15.9 Wolf Tooth GeoShift Performance Angle Headset Headsets UPC: 810006805345

by Wolf Tooth

—$34.95

Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Custom molded dual-lip seal on the crown race to protect lower bearing in the toughest conditions Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Red Crown Race 40 S.H.I.S Lower EC44 Wolf Tooth Performance EC Lower Headset Headset Lower UPC: 810006803242

by Wolf Tooth

—$54.95

Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Custom molded dual-lip seal on the crown race to protect lower bearing in the toughest conditions Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Blue Crown Race 40 S.H.I.S Lower EC44 Wolf Tooth Premium EC Lower Headset Headset Lower UPC: 812719027458

by Wolf Tooth

—$44.95

Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity, durability and corrision resistance Ultralight stem cap with integrated spacer, plus an aluminum bolt and a star nut O-ring seal prevents water intrusion around the steerer tube Custom-molded upper lip seal provides additional protection for upper bearing Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Orange S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 6 Wolf Tooth Performance ZS Upper Headset Headset Upper UPC: 810006803501

by Wolf Tooth

—$59.95

Wolf Tooth Precision Headsets for Trek Knock Block are machined in the USA out of aircraft grade aluminum with superior sealing for protection against the elements. Available in a variety of colors to add some style to your bike. These upper headsets are for Trek frames with molded-in internal bearing cups. Designed to work with Trek's Knock Block system The top cap on these headsets have unique raised features that key to Knock Block compatible stems (made by Bontrager If spacers are needed, you will need to use special Knock Block compatible spacers with notch features This product is the upper headset only Lower headsets on bikes with Knock Block do not have any unique features. They are usually IS headsets which are available separately Item Specifications Bearing Type Cartridge Color Black keyword search Trek Knock Block S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 8 Wolf Tooth Knock Block Headset Upper Headset Upper UPC: 810006802689

by Wolf Tooth

—$74.95

The Ritchey Logic WCS threadless headset features angular-contact cartridge bearings.Logic WCS uses angular-contact cartridge bearings Item Specifications Defined Color Black Ritchey WCS Logic Threadless Headset Headsets UPC: 796941330800

by Ritchey

—$39.99

Cane Creek 40-Series EC(External Cups) assemblies feature press-in cups with bearings outside the frame. The 40-Series is the workhorse of Cane Creek's headset line-up. Representing the balance of performance, durability and value, the series incorporates all the features necessary for a robust, lightweight, long-lasting headset. Item Specifications Color Black Weight 50g Material AL-6061 Stack Height 16mm Bearing Type Black Oxide Sealed S.H.I.S Upper EC34 S.H.I.S. Clamp Diameter 28.6 Cane Creek 40 EC Headset Headset Upper UPC: 840226094786

by Cane Creek

—$116.99

Hellbender 70 Lite is a headset that packs durability, weight savings and value into one product. Equipped with 6061-T6 aluminum and 35 percent lighter over comparable models. The Hellbender 70 Lite is an ideal headset choice for any bike where weight savings is a priority - a lightweight headset that doesn't lack durability or performance. Cups and covers are internally contoured and relieved to minimize weight and maximize strength Top cover with low-friction upper bearing seal completely seals cup from contaminants and is fully captured by the top cover with no loose parts Alloy Dual-Seal crown race provides excellent seal efficiency with low friction Lightweight aluminum with steel hybrid Hellbender LITE sealed cartridge bearing Carbon friendly captured compression ring Item Specifications Bearing Type Cartridge Color Black Crown Race 40 S.H.I.S Lower ZS56 S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Cane Creek Hellbender 70 Lite Headset Headsets UPC: 840226090962

by Cane Creek

—$99.99

Hellbender 70 Lite is a headset that packs durability, weight savings and value into one product. Equipped with 6061-T6 aluminum and 35 percent lighter over comparable models. The Hellbender 70 Lite is an ideal headset choice for any bike where weight savings is a priority - a lightweight headset that doesn't lack durability or performance. Cups and covers are internally contoured and relieved to minimize weight and maximize strength Top cover with low-friction upper bearing seal completely seals cup from contaminants and is fully captured by the top cover with no loose parts Alloy Dual-Seal crown race provides excellent seal efficiency with low friction Lightweight aluminum with steel hybrid Hellbender LITE sealed cartridge bearing Carbon friendly captured compression ring Item Specifications Bearing Type Cartridge Color Black Crown Race 40 S.H.I.S Lower IS52 S.H.I.S Upper IS41 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Cane Creek Hellbender 70 Lite Headset Headsets UPC: 840226090993

by Cane Creek

—$16.99

Aluminum headset stack spacers precision cut to ensure proper headset function.Precision cut for proper function Item Specifications Color Silver Defined Color Silver Material Aluminum S.H.I.S. Stem Clamp Diameter 28.6 Thickness 5 Wheels Manufacturing Aluminum Spacer Headset Stack Spacer UPC: 811079026538

by Wheels Manufacturing

—$9.46

Carbon fiber headset stack spacers, precision cut to ensure proper headset function.Compatible with all threadless and threaded headsets Item Specifications Color Gloss Carbon Defined Color Black Material Carbon S.H.I.S. Stem Clamp Diameter 28.6 Thickness 10 Wheels Manufacturing Carbon Spacer Headset Stack Spacer UPC: 811079026378

by Wheels Manufacturing

—$18.99

Aluminum headset stack spacers precision cut to ensure proper headset function.Precision cut for proper function Item Specifications Color Silver Defined Color Silver Material Aluminum S.H.I.S. Stem Clamp Diameter 28.6 Thickness 10 Wheels Manufacturing Aluminum Spacer Headset Stack Spacer UPC: 811079026552

by Wheels Manufacturing

—$16.72

Aluminum headset stack spacers precision cut to ensure proper headset function.Precision cut for proper function Item Specifications Color Silver Defined Color Silver Material Aluminum S.H.I.S. Stem Clamp Diameter 28.6 Thickness 2.5 Wheels Manufacturing Aluminum Spacer Headset Stack Spacer UPC: 811079026521

by Wheels Manufacturing

—$63.99

Cane Creek 40-Series EC(External Cups) assemblies feature press-in cups with bearings outside the frame. The 40-Series is the workhorse of Cane Creek's headset line-up. Representing the balance of performance, durability and value, the series incorporates all the features necessary for a robust, lightweight, long-lasting headset. Item Specifications Color Black Weight 89g Material AL-6061 Crown Race 26.4 Stack Height 28mm Bearing Type Black Oxide Sealed Defined Color Black S.H.I.S Upper EC30 S.H.I.S Lower EC30 S.H.I.S. Clamp Diameter 25.4 Cane Creek 40-Series EC - External Cup Headset Headsets UPC: 840226094748

by Cane Creek

—$175.99

The Cane Creek 110 ZS Headset fits a 1-1/8" threadless steerer tube to a 1-1/8" ZeroStack head tube. Compression ring captured in top cover, keeps any needed shims in place Stainless bearings feature Split-Lip seals for twice the protection of a typical cartridge bearing Includes adjusting bolt, star-nut, aluminum top cap and aluminum crown race Item Specifications Color Black Weight 96g Material AL-7075 Crown Race 30.0 Stack Height 20mm Bearing Type Stainless Steel Defined Color Black S.H.I.S Upper ZS44 S.H.I.S Lower EC44 S.H.I.S. Clamp Diameter 28.6 Cane Creek 110-Series ZS - Zero Stack Headset Headsets UPC: 840226077697

by Cane Creek

—$52.99

Cane Creek 40-Series. The 40-Series is the workhorse of Cane Creek's headset line-up. Representing the balance of performance, durability and value, the series incorporates all the features necessary for a robust, lightweight, long-lasting headset. Replaces Cane Creek IS-3 headset 41mm angular contact bearings feature 36degree inner chamfer, 45degree outer (36/45) Directly compatible with 41mm head-tube and fits 42mm (Italian) head-tube with supplied 0.25mm shim Integrated (IS) assemblies feature chamfers molded inside the head-tube with no press-in cups 15mm stack height (tall) top cover Item Specifications Color Black Weight 77g Material AL-6061 Crown Race 30.0 Stack Height 15mm Bearing Type Black Oxide Sealed Defined Color Black S.H.I.S Upper IS41 S.H.I.S Lower IS41 S.H.I.S. Clamp Diameter 28.6 Cane Creek 40-Series IS - Integrated Headset Headsets UPC: 840226095059

by Cane Creek

—$9.25

Available in the most common sizes and thicknesses-in small or bulk quantities, Problem Solvers headset spacers help riders get their stack height just right. Sold Each, Silver 1-1/8" Diameter Made from Aluminum, anodized or polished finish, without logos Item Specifications Color Silver Defined Color Silver Material Aluminum S.H.I.S. Stem Clamp Diameter 28.6 Thickness 15 Problem Solvers Headset Spacers Headset Stack Spacer UPC: 708752279681

by Problem Solvers