Upgrade your headset with a Ritchey's WCS carbon top cap assembly. Includes a carbon top cap, 1-1/8-inch star nut, bolt, and dust plug.

Standard replacement star nuts for threadless steerers.

Origin-8's Low-Profile Ahead Cap is a sleek option for your a 1 1/8-inch fork/headset. It includes the bolt and star nut.

• Sealed cartridge bearings • CNC machined 6061-T6 aluminum cups with laser etched logos • 26.4mm & 27.0mm races included • S.H.I.S.: EC30/25.4-24tpi|EC30/26 • Steerer Diameter: 25.4mm • Cup Diameter: 30.2mm • Race Diameter: 26.4mm • Stack Height: 42.5mm • Size: 1-inch • Black or Silver • Weight: 110g including lock nut

• Tapered Campagnolo IS headset • 1-1/8" Upper, 1-1/2" Lower • Sealed bearings • Aluminum top cap and star nut • Upper bearing: 45º/45º / 41.8mm OD • Lower bearing: 45º/45º / 52mm OD • Crown race: 39.76mm ID • Stack height: 15.9mm • S.H.I.S.: IS42/28.6|IS52/40 • Steerer Diameter: 28.6mm • Cup Diameter: 39.76-52mm • Race Diameter: 40mm • Stack Height: 15.9mm • Bearing Angle: T:45/45 B:45/45

• Tapered IS headset • 1-1/8" Upper, 1-1/2" Lower • Aluminum top cap and star nut • Upper bearing: 45º/45º / 41mm OD • Lower bearing: 36º/45º / 52mm OD • Crown race: 39.76mm ID • Stack height: 20mm • S.H.I.S.: IS41/28.6|IS52/40 • Steerer Diameter: 28.6mm • Cup Diameter: 39.76-52mm • Race Diameter: 40mm • Stack Height: 20mm • Bearing Angle: T:45/45 B:36/45

Get some of the most precisely machined spacers on the market. Available in lots of fun colors, Chris King's spacer kits include one each of their 25mm, 12mm, 6mm, and 3mm spacers.

Profile Design's lightweight and sleek looking headset spacers are just what you need to make sure your bike functions and looks great. Available in 2, 3, 5, 10, and 20mm thicknesses.

Chris King led the threadless headset revolution with their NoThreadSet. This iconic, incredibly durable piece of equipment embodies the limitless potential found in simple, high-quality design. Equally appropriate on your road or mountain bike, the NoThreadSet has been ridden to World Cup titles on the trail and to victory at the Tour de France. Featuring precision-machined aluminum cups, King's own in-house stainless steel bearings, a stainless steel base plate, and all ten Chris King colors, each headset is a statement piece that will likely outlast your bike! This model fits bikes with a non-tapered 1-inch headtube and threadless steerer tube. The Sotto Voce models feature toned down graphics that let you sport your Chris King style in a more subtle manner.

Chris King led the threadless headset revolution with their NoThreadSet. This iconic, incredibly durable piece of equipment embodies the limitless potential found in simple, high-quality design. Equally appropriate on your road or mountain bike, the NoThreadSet has been ridden to World Cup titles on the trail, and to victory at the Tour de France. Featuring precision-machined aluminum cups, King's own in-house stainless steel bearings, a stainless steel base plate, and all ten Chris King colors, each headset is a statement piece that will likely outlast your bike! This model fits tapered 1-1/8 - 1-1/2-inch steerers and headtubes. The Sotto Voce models feature stealthy, toned down graphics that let you show your Chris King pride in a more subtle manner.

Chris King led the threadless headset revolution with their NoThreadSet. This iconic, incredibly durable piece of equipment embodies the limitless potential found in simple, high-quality design. Equally appropriate on your road or mountain bike, the NoThreadSet has been ridden to World Cup titles on the trail and to victory at the Tour de France. Featuring precision-machined aluminum cups, King's own made-in-house stainless steel bearings, a stainless steel base plate, and all ten Chris King colors, each headset is a statement piece that will likely outlast your bike! The Sotto Voce models feature stealthy, toned down graphics that let you show your Chris King pride in a more subtle manner.

Chris King led the threadless headset revolution with their NoThreadSet. This iconic, incredibly durable piece of equipment embodies the limitless potential found in simple, high-quality design. Equally appropriate on your road or mountain bike, the NoThreadSet has been ridden to World Cup titles on the trail, and to victory at the Tour de France. Featuring precision-machined aluminum cups, King's own in-house stainless steel bearings, a stainless steel base plate, and all ten Chris King colors, each headset is a statement piece that will likely outlast your bike!

Got a threaded steerer without spacers or brake hangers? Chris King's GripNut Headset is the choice for you. Ideal for heavy touring and riding over rough terrain, the GripNut features an extra threaded collet that locks the steerer in place, offering incredible holding power and adjustability. It’s also a welcome solution for forks with damaged or undersized threads. The additional collet makes it easy to install a fork that's had its steerer tube cut too short.

Got a threaded steerer without spacers or brake hangers? Chris King's GripNut Headset is the choice for you. Ideal for heavy touring and riding over rough terrain, the GripNut features an extra threaded collet that locks the steerer in place, offering incredible holding power and adjustability. It’s also a welcome solution for forks with damaged or undersized threads. The additional collet makes it easy to install a fork that's had its steerer tube cut too short.

Got a threaded steerer without spacers or brake hangers? Chris King's GripNut Headset is the choice for you. Ideal for heavy touring and riding over rough terrain, the GripNut features an extra threaded collet that locks the steerer in place, offering incredible holding power and adjustability. It’s also a welcome solution for forks with damaged or undersized threads. The additional collet makes it easy to install a fork that's had its steerer tube cut too short.

The Inset headset offers Chris King's trademark quality and durability in a low-stack configuration sized for contemporary headtube dimensions. King's legendary, made-in-house bearings still form the centerpiece of the Inset headsets, with precisely machined aluminum cups and headset caps available in all ten classic Chris King colors. The Inset 4 is compatible with non-tapered 1-1/8-inch forks and frames using a 49mm headtube.

The Inset headset offers Chris King's trademark quality and durability in a low-stack configuration sized for contemporary headtube dimensions. King's legendary made-in-house bearings still form the centerpiece of the Inset headsets, with precision machined aluminum cups and headset caps available in all ten classic Chris King colors. The Inset 1 is compatible with non-tapered 1-1/8-inch forks and frames using a 44mm headtube.

The Inset headset offers Chris King's trademark quality and durability in a low-stack configuration sized for contemporary headtube dimensions. King's legendary, made-in-house bearings still form the centerpiece of the Inset headsets, with precisely machined aluminum cups and headset caps available in all ten classic Chris King colors. The Inset 5 is compatible with tapered 1-1/8 - 1-1/2-inch forks and frames using a 49mm headtube.

Chris King led the threadless headset revolution with their NoThreadSet. This iconic, incredibly durable piece of equipment embodies the limitless potential found in simple, high-quality design. Equally appropriate on your road or mountain bike, the NoThreadSet has been ridden to World Cup titles on the trail, and to victory at the Tour de France. Featuring precision-machined aluminum cups, King's own in-house stainless steel bearings, a stainless steel base plate, and all ten Chris King colors, each headset is a statement piece that will likely outlast your bike! This model fits bikes with a non-tapered 1-1/4-inch headtube and steerer tube. The Sotto Voce models feature toned down graphics that let you sport your Chris King style in a more subtle manner.

The Inset headset offers Chris King's trademark quality and durability in a low-stack configuration sized for contemporary headtube dimensions. King's legendary made-in-house bearings still form the centerpiece of the Inset headsets, with precisely machined aluminum cups and headset caps available in all ten classic Chris King colors. The Inset 3 is compatible with tapered 1-1/8 - 1-1/2-inch forks and frames using a 44/49mm headtube.

The Inset headset offers Chris King's trademark quality and durability in a low-stack configuration sized for contemporary headtube dimensions. King's legendary, made-in-house bearings still form the centerpiece of the Inset headsets, with precisely machined aluminum cups and headset caps available in all ten classic Chris King colors. The Inset 7 is compatible with tapered 1-1/8 - 1-1/2-inch forks and frames using a 44mm headtube.

The Inset headset offers Chris King's trademark quality and durability in a low-stack configuration sized for contemporary headtube dimensions. King's legendary, made-in-house bearings still form the centerpiece of the Inset headsets, with precisely machined aluminum cups and headset caps available in all ten classic Chris King colors. The Inset 8 is compatible with tapered 1-1/8 - 1-1/4-inch forks and frames using a 44mm headtube.

Chris King's Devolution headset solves a serious problem: How to match up your parts when parts standards keep multiplying? The Devolution lets you match frames and forks that would be otherwise incompatible. Got a 1-1/4-inch frame and a 1-1/8-inch fork? King has a headset that will make that combo work. How about an older 1-inch threadless fork and a shiny new 1-1/8-inch frame? That's a possibility, too. No shims, no special adapters, just the parts you need to make sure all your bike parts play nice.

1-inch model: • Bearing Type: Cup and Cone • Color: Silver/Black • Crown Race: 26 • Defined Color: Silver • Lower Stack Height: 10.5 mm • S.H.I.S Lower: EC30 • S.H.I.S Upper: EC30 • S.H.I.S. Stem Clamp Diameter: 25.4-24tpi Quill • Upper Stack Height: 26 mm • Weight: 130 g 1-1/8-inch model: • Bearing Type: Cup and Cone • Color: Silver/Black • Crown Race: 30 • Defined Color: Silver • Lower Stack Height: 10.7 mm • S.H.I.S Lower: EC34 • S.H.I.S Upper: EC34 • S.H.I.S. Stem Clamp Diameter: 28.6-26tpi Quill • Upper Stack Height: 26 mm • Weight: 140 g

• Bearing Type: Cartridge • Color: Black • Crown Race: 40mm • Defined Color: Black • Lower Stack Height: 0.8 mm • S.H.I.S Lower: ZS55 • S.H.I.S Upper: ZS44 • S.H.I.S. Stem Clamp Diameter: 28.6 • Upper Stack Height: 15.8 mm • Weight: 109 g

Zipp's Stem Top Cap and Bolt are designed to work specifically with Zipp stems. The eight-gram aluminum cap and nine-gram-bolt are the same as those used on bikes built for Zipp-sponsored professional teams. The bolt has a T25 Torx head for ease of adjustment and so you need only one tool for your Zipp cockpit.

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 110 headsets. • Technical Description: IS47/33/H1 • Bottom Type: IS - Integrated • Bottom Head Tube Inside Dia.: 47.0mm • Crown Race Seat Dia.: 33mm • Crown Race Type: Aluminum, Seal • Bottom Stack Height: 1mm • Bottom Bearing Type: Black Oxide, Sealed • Weight: 38.47g

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 110 headsets. • Technical Description: IS52/30/H1 • Bottom Type: IS - Integrated • Bottom Head Tube Inside Dia.: 52.1mm • Crown Race Seat Dia.: 30.015mm • Crown Race Type: Aluminum, Dual-Seal • Bottom Stack Height: 1mm • Bottom Bearing Type: Top-quality, sealed stainless steel bearings • Weight: 45.25g

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 40-Series headsets. • Technical Description: ZS44/28.6|EC44/40 • Top Type: ZS - ZeroStack • Top Head Tube Inside Dia.: 44.0mm • Stem Clamp Dia.: 28.6mm • Top Stack Height: 8mm • Top Bearing Type: Black Oxide, Sealed • Bottom Type: EC - External Cup • Bottom Head Tube Inside Dia.: 44.0mm • Crown Race Seat Dia.: 39.79mm • Crown Race Type: Steel, Face-Sealed • Bottom Stack Height: 12mm • Bottom Bearing Type: Black Oxide, Sealed • Material: 6061 aluminum

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 40-Series headsets. • Technical Description: ZS44/28.6/H8/K|ZS56/40/H4/K • Top Type: ZS - ZeroStack • Top Head Tube Inside Dia.: 44.00mm • Stem Clamp Dia.: 28.6mm • Top Stack Height: 8mm • Top Bearing Type: Black Oxide, Sealed • Bottom Type: ZS - ZeroStack • Bottom Head Tube Inside Dia.: 55.95mm • Crown Race Seat Dia.: 39.79mm • Crown Race Type: Steel, Face-Sealed • Bottom Stack Height: 4mm • Bottom Bearing Type: Black Oxide, Sealed • Material: 6061 aluminum • Weight: 109g