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> Cassettes & Freewheels

Cassettes & Freewheels

58 Results
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Wheels Manufacturing Inc. 7sp Cassette/8sp Body Spacer
$5.99

- Allows the use of a 7 speed shimano cassette on an 8 or 9 speed shimano cassette body [more]

All-City Fixed Cog Lockring
$12.00

• Chromoly steel • CNC fabrication • 1.29" x 24tpi left hand thread [more]

All-City Stainless Fixed Cog Lockring
$14.00

• Stainless chromoly steel with high-polish finish • CNC fabrication • 1.29" x 24tpi left hand thread [more]

All-City Standard Track Cog
$22.00 - $24.00

• Chromoly steel with black oxide finish • 1.37" x 24tpi right hand thread • Requires a cog lockring (sold separately) • Compatible with 1/8-inch chains [more]

SRAM PG-730 7-Speed Cassette
$24.99

SRAM's PG-730 7-Speed Cassette is the perfect replacement for your worn-out gears. It features a rugged steel construction for awesome durability and SRAM's PowerGlide technology for smooth, precise shifts throughout its 12-32 tooth range. [more]

SRAM SRAM PowerGlide PG-820 Cassette
$24.99

SRAM's PowerGlide PG-820 Cassette is a fine 8-speed cassette. It features steel cogs with SRAM's DuraBlast technology for smooth, precision shifting and excellent durability. [more]

SRAM SRAM PowerGlide PG-830 Cassette
$24.99

SRAM's PowerGlide PG-830 Cassette is a quality 7-speed cassette. It boasts durable chrome-plated steel cogs with SRAM's shifting technology that includes optimal tooth profiles and ramps for fast, precision shifts every time. [more]

Shimano Claris 8-Speed Cassette
$24.99

Shimano's Claris cassette is an incredible value for your 8-speed drivetrain. This cassette comes in a range of sizes to suit your riding style and terrain. [more]

Surly Cassette Cog
$25.99

Pair this cog with your Shimano-compatible rear hub, spacers and a lockring (sold separately) and discover the joy and simplicity of a singlespeed without the cost of a new wheel. Machined from heat-treated, chrome-plated chromoly, these seriously tough cogs are strong, shiny and they come in sizes… [more]

SRAM PG-850 8-Speed Cassette
$26.99 - $33.99
Product Rating
 
4.0 stars
 (1 Review)

When it's time to replace your old 8-speed cassette, check out SRAM's PG-850. Its steel construction and SRAM's PowerGlide technology combine to deliver miles of solid shifting and outstanding durability. [more]

SRAM PG-720 Cassette
$30.00

No mixed messaging or compromises here. The GX DH cassette was built with only one purpose in mind—exploiting gravity to its fullest lap after lap. This downhill-optimized 7-speed cassette provides gear steps that give each shift more purpose, and its compact design allows more spoke clearance.… [more]

Surly Cassette Cog
$30.00

Pair this cog with your Shimano-compatible rear hub, spacers and a lockring (sold separately) and discover the joy and simplicity of a singlespeed without the cost of a new wheel. Machined from heat-treated chromoly and then chrome plated, these seriously tough cogs are strong, shiny and they come… [more]

Surly Track Cog
$30.00

Machined from heat-treated, chrome-plated chromoly, these seriously tough cogs will hold up to massive track sprints and crazy skid-stops. Surly's Track Cogs are strong, shiny and they come in two widths and sizes from 13T to 22T so you can select the perfect gear. [more]

Shimano Sora 9-speed Cassette
$31.99 - $42.99

Shimano's Sora cassette is an incredible value for your 9-speed drivetrain. Crisp shifting and a low weight keep your mind focused on having fun on your bike and not adjusting it. This cassette comes in a range of sizes to suit your riding style and terrain. [more]

All-City Stainless Track Cog
$34.00

• Stainless steel with high-polish finish • 1.37" x 24tpi right-hand thread • Requires a lockring (sold separately) • Compatible with 1/8-inch chains [more]

SRAM PG-950 9-Speed Cassette
$37.99 - $39.99
Product Rating
 
5.0 stars
 (1 Review)

When it's time to replace your 9-speed cassette, check out SRAM's PG-950 cassette. It delivers solid shifting and durability ride in and ride out for your 9-speed rig. [more]

Shimano Track Cog
$39.99 - $41.99

You've got to have the right ratio for the track, and Shimano's Dura-Ace cogs come in a range of tooth counts so you can always be prepared. Manufactured from durable chromoly steel, each cog is machined to run perfectly straight. [more]

SRAM PG-1130 11-Speed Cassette
$44.99 - $88.00
$64.00 - $88.00

SRAM's PG-1130 11-Speed Cassette is constructed of heat-treated steel cogs and boasts SRAM's PowerGlide tooth profiles and shift ramps for quick, positive gear changes. This excellent cassette also sports an aluminum spider construction for a maximum stiffness-to-weight ratio, a durable steel… [more]

Shimano 105 10-Speed Cassette
$47.99 - $64.99
Product Rating
 
5.0 stars
 (1 Review)

Shimano's 105 10-Speed Cassette delivers excellent shifting and durability. The cogs are made of long-lasing, smooth-running steel. They have Shimano's engineered tooth shapes for precision shifting. And for lightness, the cassette has an aluminum carrier for the top cogs and nylon spacers. [more]

Shimano Deore 10-Speed Cassette
$49.99 - $51.99

Shimano's Deore 10-Speed Cassette boasts cogs with ramps and pins to effortlessly guide your chain so you always have clean, crisp shifts. [more]

Shimano SLX Dyna-Sys 10-Speed Cassette
$49.99 - $64.99

Shimano's SLX Dyna-Sys 10-Speed Cassette features chrome-plated steel sprockets mounted to an aluminum carrier for an ideal blend of durability and low weight. Closer gear ratios in the middle of the cassette ensure you'll have the perfect gear for the trail's ups and downs. Plus, the cogs are… [more]

Shimano Tiagra 10-speed Cassette
$49.99

Shimano's Tiagra cassette offers crisp shifting and lightweight performance. Hyperglide sprockets incorporate computer-designed shift ramps and tooth profiles for improved shifting. This cassette comes in a range of sizes to suit your riding style and terrain. [more]

Surly Dingle Cog
$50.00

If you love the feel and simplicity of a fixed gear, but crave a bit more versatility from your steed, the Surly Dingle Cog has just what you need. By pairing the Dingle with two front chainrings that have a 2-tooth difference such as a 42T and a 44T (sold separately), you gain a gearing option and… [more]

Shimano Saint/SLX 9-Speed Cassette
$51.99 - $54.99

Dependable, quick shifting awaits with Shimano's Saint/SLX 9-Speed Cassette. It features chrome/nickel-plated steel sprockets mounted to a aluminum carrier for an ideal blend of durability and low weight. Plus, the cogs are ramped and machined for those flawless shifts that Shimano is known for. [more]

SRAM PG-1030 10-Speed Cassette
$53.00

SRAM's PG-1030 10-Speed Cassette is a great choice. It's constructed of light and durable materials and boasts SRAM's PowerGlide tooth profiles and shift ramps for quick and positive gear changes every time. This trick cassette is available in four configurations perfect for riding off road,… [more]

Shimano Ultegra 9-Speed Cassette
$53.99 - $89.99

Shimano's Ultegra 9-Speed Cassette delivers pro-level shifting and durability. The computer-enhanced tooth shapes and tough cogs mean you can shift quickly, precisely and smoothly even under pressure. [more]

SRAM PG-970 9-Speed Cassette (MTB)
$54.99

SRAM's PG-970 9-Speed Cassette is the perfect replacement for your worn-out gears. It features a rugged steel construction for awesome durability and SRAM's PowerGlide technology for smooth, precise shifts. [more]

Shimano Deore XT Dyna-Sys Cassette (10-Speed)
$60.99 - $66.99

Reliable, perfect shifting awaits with Shimano's Deore XT Dyna-Sys Cassette. It features chrome-plated steel sprockets mounted to two aluminum carriers for an ideal blend of durability and low weight. Closer gear ratios in the middle of the cassette ensure you'll have the perfect gear for the… [more]

SRAM PG-970 9-Speed Cassette (Road)
$62.00

SRAM's PG-970 9-Speed Cassette is the perfect replacement for your worn-out gears. It features a rugged steel construction for awesome durability and SRAM's PowerGlide technology for smooth, precise shifts. [more]

SRAM PG-970 DH 9-Speed Cassette
$62.00

SRAM's PG-970 DH 9-Speed Cassette is the perfect replacement for the worn-out gears on your downhill or freeride bike. It features a rugged steel construction for awesome durability and SRAM's PowerGlide technology for smooth, precise shifts. [more]

58 Results
Per Page 30 60
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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. Our "northern" store is located at 1451 El Camino Real, Redwood City CA, 94063. 650 366 7130. Our "southern" store is located in Foothill Crossing Shopping Center, 2310 Homestead, Los Altos CA, 94024. 408 735 8735. Our hours and directions to our stores 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!