Shim spacers can be placed between bearing and compression cover in IS headsets to fine tune the fitment.

- Aheadset preload adjusting bolt

Standard replacement star nuts for threadless steerers.

- Machined aluminum spacers for tuning stem height - Black spacers with white FSA graphic - 5mm and 10mm Spacers are sold individually - 1-1/8" Spacer Kit includes: (3) 3mm, (4) 5mm, (3) 10mm, (2) 20mm

- Super light carbon spacers for tuning stem height - Spacers are internally weight relieved to drop a few extra grams

- Crown races for servicing cane creek headsets and Aheadsets

Origin-8's Capster is a top cap, bolt and star nut for your 1 1/8-inch threadless headset. It comes in many colors so you can customize your ride.

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.

- Steel cups - Steel retainer bearings - Available in chrome or black - Steerer Dia: 25.4mm - Cup Dia: 30mm

- Steel cups - Steel retainer bearings - Available in chrome or black - S.H.I.S.: EC32/25.4-24tpi|EC32/27 - Steerer Dia: 25.4mm - Cup Dia: 32.5mm

Origin-8's 1 1/8-inch Headset Spacers are made of lightweight and durable aluminum and come in 2mm, 5mm or 10mm thicknesses and lots of cool colors to add style to your ride. You get a bag of 10 spacers.

- Traditional and integrated type replacement headset crown races

- PolyCarbonate headset spacers with the FSA logo - Variety of colors, sold in bags of 10

Crown races for Cane Creek headsets fit a variety of lowers and crown race seat diameters. - Compatible with 10-, 40- and 110-Series headsets and backwards compatible with S and XX Series - Integral mold seals keep out the elements - Durable steel construction

Lightweight aluminum alloy - Non-Keyed - Height: 20mm - 10 to a bag

- Microspacers ensure the correct fitment of integrated headsets - Use between the top cover and the compression ring to ensure the top cover does not contact the headtube - Sold in bags of 10

- color-matched aluminum Interlok Spacers for Cane Creek headsets

- Machined aluminum spacers with weight reducing splines, 30% lighter than standard

• Steel • Retainer ball bearings, includes top cap and star nut • 1 1/8 inch • S.H.I.S.: EC34/28.6, EC34/30

• Steel • Retainer ball bearings, includes top cap and star nut • 1 inch • S.H.I.S.: EC30/25.4, EC30/26

- 3-piece expander design provides a secure fit within carbon steerer tubes - 22-25mm range of expansion - 50mm height reinforces carbon steerer tube beneath the stem - New design evenly distributes headset compression forces - Lightweight AL6061 alloy construction - Stainless steel bolt

Custom Cane Creek lower race for Salsa.

- Forged steel cups with caged 5/32" ball bearings - TH-857 features a alloy top cover - TH Series: External Cup, traditional - S.H.I.S.: EC34/28.6|EC34/30 - Stack: 14.9mm/11mm - Color: Black - Weight: 126g

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.

- Ultralight, CNC-machined 6061 aluminum spacers for fine-tuning stem height - Includes one each: 3, 5, 10mm spacers and two each: 1mm spacers

- 3-piece expander design provides a secure fit within carbon steerer tubes - 22-25mm range of expansion - 50mm height reinforces carbon steerer tube beneath the stem - New design evenly distributes headset compression forces - Lightweight AL6061 alloy construction - Stainless steel bolt

Ritchey's Logic Headset boasts machined aluminum cups for excellent longevity, light weight and super looks. A smaller upper angular cartridge bearing saves weight while a larger lower angular cartridge bearing boosts strength and durability.

- No. series headsets offer excellent performance and value - No. 8b: 36x45 degree Cane Creek Integrated, or No. 10: Zero Stack shallow available for 1-1/8" applications - No. 10 S.H.I.S.: ZS44/28.6|ZS44/30 - No. 8B S.H.I.S.: IS42/28.6|IS42/30 - Stack: 5.2mm/3.7mm (No. 10), 8mm/1mm (No. 8B) - Color: Black - Weight: 93g (No. 10), 74g (No. 8B)

Origin-8's Carbon Fiber Headset Spacers are made of lightweight, durable carbon and come in 5mm, 10mm or 20mm thicknesses. You get a bag of five spacers.

- Separate top and bottom headset assemblies to fit a variety of common applications, including ZS (Zero Stack) and EC (traditional, External Cup) - Precision machined aluminum cups with premium grade bearings - Top assemblies include star nut/top cap, while bottom assemblies include crown race