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21 Results
Shimano Deore M6000 Shadow+ Rear Derailleur

Shimano's Deore Shadow+ Rear Derailleur is loaded with mountain bike technology. The Shadow design tucks the rear derailleur closer in to the wheel, reducing damage from rocks, roots, and trail obstacles. When it comes to gear changes, Shimano's Dyna-Sys supplies consistent, smooth shifting across… [more]

Shimano Ultegra R8060 TT/Triathlon Dual Control Lever
$170.99 - $349.99

Shimano Ultegra TT/Triathlon dual control lever. - Reduced drag through a more aerodynamic design - Eliminated the switch box of ST-6871 to make the design smaller and shorter - Intuitive shifting control - Keep firm when shifting - Single button on each side of the shift lever only works with… [more]

Shimano UN55 Square Taper English Threaded Bottom Bracket
$23.39 - $29.99

Shimano's BB-UN55 Square Spindle Bottom Brackets are the unofficial standard for English-threaded cartridge bottom brackets. Quality, value, and durability come together to keep you cranking for many, many miles. - Fits JIS Square-Taper Cranksets - Hollow spindle - Crankarm fixing bolts not… [more]

SRAM Eagle X-Sync 2 Direct Mount Oval Boost Chainring

Intense study of chain and chainring wear patterns led to the radical tooth profile that lasts longer, runs quieter and further improves chain retention. Oval ring shape for riders that want to adjust the power profile of their pedal stroke. - The only oval rings with X-Sync 2 tooth design - Direct… [more]

SRAM GX Eagle Chain

The chain is the heart of the Eagle 1x12 drivetrain, ensuring quiet operation, long life and precise shifting. It features the same link geometry as XX1 Eagle, with solid pins and a more modest finish treatment. - Not for use with front derailleur drivetrains - Links (links): 126 - Drivetrain… [more]

SRAM Slickwire Stainless PTFE Coated Brake Cable
$13.00 - $15.00

Cables are coated with a durable low-friction polymer. - Dupont Tefzel coating is more durable than previous coated cables - Diameter: 1.6mm - Double Ended: No [more]

SRAM Slickwire Stainless PTFE Coated Derailleur Cable

Cable is coated with a durable low-friction polymer. - Dupont Tefzel coating is more durable than previous coated cables - Length: 2300mm - Diameter: 1.2 - Cable Head: Shimano/SRAM - Double Ended: No [more]

SRAM Stainless Derailleur Cable
$5.99 - $7.00

Stainless steel cables are extruded to provide a smooth low-friction surface. [more]

SRAM Stealthamajig Hydraulic Disc Brake Hose Fitting Kit

Hose fittings fit many of SRAM's newest hydraulic brake models. - Includes 5 Threaded Hose Barbs, 5 Compression Fittings, 1 T8 Torx Wrench - Fittings are backwards compatible with older SRAM and Avid hydraulic brakes [more]

Kool-Stop Dura Set Dual + Salmon Brake Pads

The Dura Road Pad is a forged aluminum holder with dual pivot adjustment that houses Kool-Stop's Dual Compound Dura Type insert and comes with an extra pair of their aggressive salmon compound inserts. These will fit most Shimano type brake systems. Features: - Aluminum Holder - Patented Plow Tip -… [more]

Kool-Stop Dura-Type Brake Pad Inserts
$6.95 - $11.25

The Dura Type insert pad was originally developed as an aftermarket upgrade for high end Shimano brake systems. The Kool-Stop Dura pads are the same spec as Shimano pads and fit Shimano, SRAM, TRP and Tektro holders with a set screw. Compounds: - Black: Kool-Stop's standard compound which is great… [more]

Kool-Stop Steel Disc Pads (Tektro)

Kool-Stop disc pads are made with organic materials that are blended and bound together using a resin. The compounds do include small amounts of metal to improve the braking formula but though this is a mined material the pads are largely organic. The term semi-metallic can also be used. Kool-Stop… [more]

Jagwire Pro Compressionless Brake Housing

Pro Compressionless brake housing eliminates flex from cable actuated braking systems, increasing power and improving lever feel. - KEB-SL - linear strand, Kevlar reinforced, compressionless brake housing with Slick-Lube liner - Perfect for full-housing, high-performance bikes with mechanical disc… [more]

Jagwire Sport Brake Housing
$27.99 - $56.99

Sport brake housing packs high performance features into a colorful and durable package, making it a functional and aesthetic upgrade. - Slick-Lube lined housing reduces friction for faster cable movement and better braking response - High carbon internal steel coil for improved stiffness -… [more]

Jagwire Sport Organic Disc Brake Pads (Shimano)

Jagwire Sport Organic pads feature an all-new resin compound. Mounted on a steel backing plate, this compound gives good power and modulation, while keeping noise to a minimum. Great for riders primarily riding in dry conditions. [more]

Ergon GP1

The original ergonomic grip. The GP1 sets the worldwide standard in ergonomic comfort, materials, and quality. The GP1 eliminates numb hands, aching fingers, and tired forearms. The uniquely shaped grip body is made from 100% German, TÜV-certified rubber compounds of the purest quality – with… [more]

Ergon GP3

The Ergon grip with a 3-finger bar end provides a wide range of use, ranging from mountain bikes to fitness to touring bikes. The bar end angle can be adjusted independently from the angle of the grip for the perfect personal fit and the bar end doubles as a clamp to lock the grip in place and… [more]

Bontrager Arvada Elite

Road ready, trail approved Arvada Elite adds comfort and reduces soft tissue pressure by creating a strategic cut-out in the saddle shell. This allows the softer finishing material across the shell cut-out to be more compliant, so you get the benefits of a cutout saddle with the classic look and… [more]

Bontrager Hilo Comp Saddle

Unlock power and speed with Hilo Comp, a fast and sleek split support zone saddle that offers comfort and support for all-out TT and Tri efforts. Hilo Comp is designed for symmetric and stable pedaling in multiple positions and provides additional compliance from oversize carbon rails and a… [more]

Bontrager Speed Stop Pro

Key features - Ultra-light direct mount caliper design - Tunable stopping power to dial in the perfect lever feel - Fully adjustable leverage ratio works with all road levers - 95g with hollow arms and TI hardware - For use as front or rear brake - Includes brake pads for aluminum rims [more]

Bontrager XR Endurance Comp Grip

Take the long way with the XR Endurance Comp grip. A contoured shape provides comfort and support, while an opposing tread pattern ensures your palms are padded and your fingers remain confidently in place. This Dual-Density grip features a lightweight, durable lock-on design that securely attaches… [more]

21 Results
Chain Reaction Bicycles is your local bicycle shop for the San Francisco Bay Area! Unlike some other shops, we are dedicated 100% to serving the needs of local cyclists; our offerings are exclusively available for in-store pickup. You will find us at 1451 El Camino Real, Redwood City CA, 94063. 650 366 7130. Our Los Altos location closed on September 24th, 2017; we have consolidated all operations within our Redwood City flagship store.  Our hours and directions may be found here. We look forward to taking care of all of your cycling needs, including service! Mike & Steve Jacoubowsky, Partners, Chain Reaction Bicycles. Serving you since 1980!