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The absoluteBLACK's HOLLOWcage® Oversized Derailleur Pulley Cage for Shimano 9100 / 8000 features a revolutionary mono-plate design to provide quiet and precise shifting. - Designed for use with Shimano Dura Ace 9100 / 9150 / 9170 , and Ultegra 8000 / 8050 - Fits up to a 32T cassette - The Silent Xring Pulley dampens the chain impact on the guide pulley teeth, eliminating the engagement noise -Flexible cage design aligns better with the angle of the chain when using the higher gears of the cassette - HOLLOWcage uses abnormally large, bespoke, full ceramic bearings that make the pulleys incredibly stiff for greater shifting precision - Upper pulley features tall teeth to provide improved shifting precision

The absoluteBLACK integrated headset top cap is a one-piece top cap and bolt with a 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

absoluteBLACK's Chain Catcher is designed to eliminate the possibility of the chain falling in towards the frame when shifting to the inner chainring on uneven road. Chain Catcher is a simple add-on component which improves the overall function of your drive train and protects your valuable frame from dropped chains. Especially recommended for carbon frames. No matter how well you set up the front derailleur with round or oval rings, there is always a possibility that chain may find its way to drop on the frame when you shift quickly from outer ring to inner one. Especially on rough or gravel roads. Mounting the Chain Catcher in front of the front derailleur will prevent such occurrence from happening because the chain will be guided precisely onto the small ring and will not be able to go any further towards the frame. Our Chain Catcher has a conical tapered head, providing an excellent fit to braze-on mounts that are integrated with frame. However, with older frames you may use a clamp braze-on adapter. In such case please ensure that your adapter has a front face also conical (not flat). Unlike the majority of chain catchers on the market, absoluteBLACK's Chain Catcher can be precisely adjusted to ensure only minimal gap is left to the inner chainring for maximum security. - Mass/Size: 11.6g / one size fits all - Compatibility: All braze-on frames and derailleurs. - Adjustability: 6mm chainline adjustment provided on the slot for precise setup - Material: CNC machined 7075 T6 / M5 stainless steel bolt - Finish: type II anodizing

Zipp Speed Weaponry Cartridge Bearings

Zipp Speed Weaponry Cartridge Bearings - Will not work on Zipp 188 V9 rear hubs

Zipp Speed Weaponry Cartridge Bearings

Precise spacers keep your headset tight, and provide correct bike handling and component life. Lightweight and precisely parallel, Zipp carbon headset spacers are precision ground to keep your fork secure through every twist, turn and bump in the road. 1-1/8-inch diameter in 4, 8, 12, and 30 mm heights.

- Includes 61803 bearings and one grease syringe - Measurable wattage savings between 1.5 and 9 watts per bearing set, depending on the level and condition of your existing bearings - Note: 88 front and 188v9 rear hubs are on all 2014 and newer Zipp 202, 303, 404, 808 - One kit required for: Zipp 88, 30 and 60 front hubs Zipp 188v8 rear hubs Zipp ALL free hub driver bodies - These 61803 bearings are not interchangable with the 77/177 hub 61803 bearings

- Includes 61903 bearings and one grease syringe - Measurable wattage savings between 1.5 and 9 watts per bearing set, depending on the level and condition of your existing bearings - Note: 88 front and 188v9 rear hubs are on all 2014 and newer Zipp 202, 303, 404, 808 - One kit required for: Zipp 188v9, 30 and 60 rear hubs

- Includes 61803 (1) and 61903 (1) bearings and one grease syringe - Measurable wattage savings between 1.5 and 9 watts per bearing set, depending on the level and condition of your existing bearings - Note: 88 front and 188v9 rear hubs are on all 2014 and newer Zipp 202, 303, 404, 808 - One kit required for: Zipp Super-9, 900 tubular and Sub-9 disc rear hubs

- Includes 61803 bearings and one grease syringe - Measurable wattage savings between 1.5 and 9 watts per bearing set, depending on the level and condition of your existing bearings - These 61803 bearings are not interchangable with the 88/188 hub 61803 bearings

Zipp Speed Weaponry Vuka Extension End Plugs - Plastic bar end plug pair for 22.2mm extensions

- Plastic bar end plug pair for 22.2mm extensions

Designed for use with the Zipp SL Speed Seatpost; an internal mount to hold a Shimano DI2 seatpost battery. - Mount compatible only with B1 SL Speed seatpost - Weight: 18g for 27.2mm, 19g for 31.6mm

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.

Zipp Speed Weaponry Bolt Kits

Zipp Speed Weaponry Vuka Aero Center Cap Kit - Bolt kit sold separately

Zipp Speed Weaponry Vuka / Stealth Riser Kit - Bolt kits sold separately

Zipp developed an extensive line of aluminum aerobar extensions to provide the perfect fit for any rider, regardless of size or riding position. Vuka extensions are designed to deliver improved aerodynamics by placing hands closer together and nearer to the rider’s head to start airflow over the rider sooner. Designed with input from top bike fitters, 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. - Clean internal cable routing for easy installation - Length: 360mm

The perfect bike fit needs to blend slippery aerodynamics and a comfortable, stress-free body position while optimizing control over the bike. Top fitters are constantly devising new methods to maximize and balance these goals. Designed using feedback from top fitters, Zipp’s Vuka Carbon Extensions give you all the options needed to optimize your position and go for the win or your personal best: Vuka Carbon Evo extensions decrease drag by starting airflow over the body sooner while keeping the arms and wrists in a comfortable, relaxed position. The Evo shape, with a 20mm inward roll and multi-radius bend, is constructed using carbon fiber, allowing for even more complex shaping and lighter weight. - Compatible with all 22.2mm clip-on systems - Material: Unidirectional carbon - Internal cable routing - Length: 380mm

The perfect bike fit needs to blend slippery aerodynamics and a comfortable, stress-free body position while optimizing control over the bike. Top fitters are constantly devising new methods to maximize and balance these goals. Designed using feedback from top fitters, Zipp’s Vuka Carbon Extensions give you all the options needed to optimize your position and go for the win or your personal best: Vuka extensions decrease drag by starting airflow over the body sooner while keeping the arms and wrists in a comfortable, relaxed position. Vuka Race Carbon Extensions were designed using data compiled from thousands of fit sessions with recreational and professional cyclists and triathletes by the world’s best fitters. The Vuka Race bend places the wrists at a more natural bend to help riders remain in their tuck to optimize aerodynamics. - Compatible with all 22.2mm clip-on systems - Material: Unidirectional carbon - Internal cable routing - Length: 380mm

Vuka Alumina Clip Risers are designed for use with the Vuka Alumina Clip's above-bar option. The risers are designed to offer a wider range of adjustability within the Vuka Alumina aero-cockpit system.

The VukaClip is all about providing the ultimate in fit, security, and adjustability for you to be faster and more efficient in your triathlon or time-trial aero position at an affordable price. Redesigned to be easier to set up and adjust, the VukaClip has a large, redesigned armrest to reduce pressure points and increase comfort. The VukaClip is made with the industry-standard 22.2mm clamp diameter for maximum versatility, making it compatible with most extensions on the market. Designed with input from top bike fitters, the shape of the Vuka Evo Extensions are 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. - Bar-setting fit, security, and adjustability - Extension material: Unidirectional carbon

Headset bearings for Wolf Tooth headsets. - Replacement bearings

Headset bearings for Wolf Tooth headsets. - Replacement bearings

The Wolf Tooth Compression Plug provides an anchor point to set the headset preload on road, MTB, or gravel bikes with carbon forks—essentially securing everything on the steerer tube. A stem cap with a 5mm integrated spacer is included, which is important since many fork manufacturers require the steerer tube to extend above the top of the stem. It is available in multiple color options to add some style to your bike. - Fits forks with 1 1/8" steerer tubes - Designed for carbon steerer tubes but works with metal steerer tubes with ID from 23.5mm to 24.5mm - 7075-T6 aluminum - Never use a star nut on forks with carbon steerers

Goatlinks are designed to optimize the derailleur's position relative to your cassette. Offered in two versions - a 10-speed and 11-speed, each is intended to improve the shifting of your 1x drivetrain. - Optimized for using a Shimano XT 8000 or XTR 9000 Rear Derailleur with a 10-42, 10-44, 11-45, 11-46 rear cassette setup - Compatible with M8000 (XT) and M9000 (XTR) series eleven-speed Shimano rear derailleurs - Double chainrings are not currently supported - Triple chainrings are not supported - Direct Mount-native frames and SRAM derailleurs are not supported

Headset bearings for Wolf Tooth headsets. - Replacement bearings

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

Add some color and style to your bike build with Precision Headset Stack spacers. Offered in multiple sizes, made proudly in Minneapolis, MN, and laser marked with the stack size on each end, find your perfect fit. - Designed and manufactured in Minneapolis, MN USA - Fits 1 1/8" steerers only - Made from 6061-T6 Aluminum