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Zipp’s Vuka Extensions are made of ultralight, stiff carbon and come in different bends so that you can find the model that optimizes your aero position and maximizes your speed. The Straight extensions place you as low as possible, while the Race and Ski-Tip models have more bend for your wrists. Then, for a seamless junction between your shifters and the extensions, the Race Vuka Shift has built-in mounts that let you screw your shifters directly to the extensions. They accept Zipp’s R2C Aero shifters and SRAM's 900 TT and 500 TT shifters. All the extensions have internal cable routing and gradations to make adjustments easy.

Zipp developed an extensive line of aluminum aerobar extensions to provide the perfect fit for any rider, regardless of size or riding position. Vuka Alumina Extensions offer three different bends to achieve your ideal fit. - Vuka Alumina Ski-Tip offers a hand position for long-haul comfort and speed. 185 grams. - Vuka Alumina Race features 52mm of rise and places the wrists at a more natural bend to help riders remain in their tuck to optimize aerodynamics. 175 grams. - Vuka Alumina Evo are available in both a 70mm (176g) and 110mm (180g) rise. Designed to deliver improved aerodynamics by placing hands closer together to start airflow over the rider sooner, the shape of the Vuka Alumina Evo is crafted to feel as if the rider is shaking hands with the bar. This is achieved through the use of a multi-radius bend paired with a 20mm inward roll of the bar that can be adjusted to dial-in fit and achieve an ideal position.

Zipp’s Vuka Alumina Clip Extension Mounts/Armrests are made of light, strong, stiff 2014-series aluminum and have nylon armrests with wide, comfortable foam pads. They're perfect for mounting your favorite extensions (sold separately) and finding your optimal aero position. There's also a model that goes above and beneath your base bar.

Zipps' Vuka Alumina Clip Risers work with the Vuka Alumina Above-Bar Clips (sold separately) and let you raise your armrest height. They're made of sturdy, lightweight aluminum and come in 10mm, 25mm, and 50mm sizes.

- 10-speed: stainless steel 6.1mm wide no tool chain connector for Shimano and Campagnolo - 9-speed: stainless steel 6.5mm wide no tool chain connector for Wippermann chains - 6-8 speed: stainless steel 6.8mm wide no tool chain connector for Wippermann chains

Shims for fitting 25.4mm diameter handlebars to 31.8mm clamp diameter stems. - Outside Diameter: 31.8mm - Inside Diameter: 25.4mm - Length: 48mm - Machined Aluminum - Anodized Black

- 4, 5, & 6mm stainless steel fastener kit - Includes socket cap screws, flat socket cap screws, flat washers, lockwashers, plain nuts, and locking nuts - 218 Pieces Kit contains: - M4 X 8 Socket Head Cap qty. 8 - M4 X 16 Socket Head Cap qty. 8 - M4 X 8 Flat Socket Head Cap qty. 4 - M5 X 12 Socket Head Cap qty. 12 - M5 X 10 Socket Head Cap qty. 12 - M5 x 8 Socket Head Cap qty. 12 - M5 X 16 Socket Head Cap qty. 8 - M5 X 16 Button Socket Head qty. 16 - M5 X 25 Socket Head Cap qty. 4 - M5 X 8 Flat Socket Head Cap qty. 4 - M5 X 12 Flat Socket Head Cap qty. 8 - M5 X 16 Flat Socket Head Cap qty. 8 - M6 X 20 Socket Head Cap qty. 2 - M6 X 35 Socket Head Cap qty. 2 - M6 X 45 Socket Head Cap qty. 2 - M4 Flat Washer qty. 8 - M5 Hex Nut qty. 20 - M5 Nylock Nut qty. 10 - M5 Flat Washer qty. 20 - M5 Lockwasher qty. 20 - M6 Hex Nut qty. 8 - M6 Nylock Hex Nut qty. 6 - M6 Flat Washer qty. 8 - M6 Lockwasher qty. 8

You have to get that handlebar height just right. It's more comfortable, more efficient, and helps keep your entire upper body healthier. Wheels Manufacturing has your well-being covered with a wide variety of sizes to ensure your bars are right where they need to be. - Spacers are sold individually or in packs of 5 or 10 spacers. Select options from the dropdown menus to display pack size

BB30 service kit includes (2) Enduro 6806 ABEC-5 Angular Contact sealed bearings and 2 retaining clips. - Bearing Dimensions: OD: 42mm / ID: 30mm / Width: 7mm - Direct replacement bearing for OEM BB30 and BB30A systems

This assortment of chainring spacers contains 120 pcs. in a clear plastic storage box. Kit includes: - (20) 0.6mm - (20) 1.2mm - (5) 2mm - (5) 3.8mm - (5) 2.2mm - (5) 3mm - (5) 3.5mm - (10) 4mm - (10) 4.3mm - (10) 4.6mm - (10) 5mm - (5) 5.3mm - (5) 7.1mm - (5) 8.3mm

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (1) M6x10 Flat Head Screw

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M4x8 Flat Head Screw

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (1) M8 Chainring Bolt

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (1) M8 Chainring Bolt

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M5x10 Flat Head Screws

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (3) M3x10 Flat Head Screws

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M4x8 Flat Head Screws Note: The mounting holes on Wheels Mfg DROPOUT-120 are 18mm apart, center-to-center. Do not confuse this hanger with DROPOUT-138.

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M3x10 Socket Head Cap Screws

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M4x8 Flat Head Screws

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M4x4 Socket Head Screws

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M3x10 Socket Head Screws

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M3x10 Socket Head Cap Screws Note: Wheels Mfg DROPOUT-16 has 14.33 mm between the two holes (center-to-center) and 6.51mm between the two vertical plates.

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M3x8 Flat Head Screws

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M3x8 Flat Head Screws

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (1) M6 Chainring Bolt

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M3x8 Flat Head Screws

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (1) M8 Chainring Bolt

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M3x10 Flat Head Screws

All Wheels Manufacturing hangers are produced in their Colorado shop to exacting tolerances using the finest US-made aerospace quality aluminum. - CNC-machined 6061 aluminum - Black anodized finish - Mounting hardware included

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (1) M8 Chainring Bolt