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Cassettes/Freewheels

One of the best ways to upgrade your bike is to increase the shifting performance of your bike. We offer a wide assortment of gearing to get you to that next level of shifting quality. 

Shimano Ultegra 10-Speed Cassette
$69.99
Shimano's Ultegra 10-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.
Shimano Dura-Ace 10-speed Cassette
$219.99
Shimano's Dura-Ace 10-speed Cassette is comprised of an aluminum cog carrier, 4 titanium and 6 steel cogs (from largest to smallest respectively). This makes for a super-light and stiff cassette that makes your derailleur shift like a dream so you can dance up the climbs as easily and efficiently as your chain climbs up and down these cogs.
Shimano 105 10-Speed Cassette
$47.99
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.
SRAM PG-950 9-Speed Cassette
$34.00
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.
SRAM PG-850 8-Speed Cassette
$25.00 - $33.00
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.
Niner Cogalicious SS Cog
$35.00
Niner's Cogalicious cog is a no-nonsense, lightweight solution for your singlespeed workhorse. It's made from 7075 T6 aluminum, so you know it's light and strong. The tall tooth profile means exceptional engagement with your chain, so when you're grinding up the climb on the weeknight climb, you know where your power's going when you stomp on the pedals. Plus, the wide offset design takes it easy on your Shimano freehub body.
ACS Crossfire Freewheel
$24.00 - $25.00
- Durable cold forged CNC machined freewheel - 3 pawl engagement for stronger hold with engagement every 12 degrees - New removal notch pattern allows for better frame clearance
Shimano Ultegra 11-Speed Cassette
$79.99
Shimano's Ultegra 11-Speed Cassette delivers pro-level shifting and durability. The computer-designed tooth shapes and tough cogs mean you can shift quickly, precisely and smoothly even under pressure. Rider-tuned gearing options offer a range of cassettes to suit your riding style.
Shimano Track Cog
$39.99 - $41.00
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.
Campagnolo Cassette Lockring
$30.00
- Fits 2000 and newer Campagnolo wheels - Fits all Fulcrum wheels - Fits 1999 Record/Chorus hubs and all Campy hubs 2000-newer - 27.0mm thread OD 10-speed: - For use with Campagnolo cassettes with 12 to 16 tooth first position cogs - Lockring has a 38.5mm flange diameter 11-speed: - For use only with Campagnolo 11 speed cassettes with 12 tooth first position cogs
Origin8 Single-Speed Conversion Spacer Kit
$24.99
• Converts a cassette hub to a single speed • 8 spacers included in various sizes to adjust chain line • Available in black or red anodized 6061 aluminum • Fits Shimano style cassette bodies • Conical spacers for increased cog stiffness
Shimano Ultegra R8000 Cassette
$79.99 - $89.99
- High-performance gear combinations provide superior rider choice - Hub body to fit a variety of bikes from MTB to road - Model Number: CS-HG800-11 - Series: Shimano - Average Weight: 335 grams
Shimano Deore XT 11-Speed Cassette
$95.99 - $109.99
• Steel construction on all but the largest aluminum gear • Nickel-plated finish for corrosion and wear resistance • Dyna-sys 11-speed cassette with "Rhythm step" gearing for closer gear ratios and smoother shifting performance • Fits Dyna-sys 11-speed and current Shimano 9/10-Speed MTB hubs • The largest cog (40t) is positioned inboard and above the drive-side flange • Hubs with tall drive-side flanges may not be compatible due to spoke interference
SRAM PG-1070 10-Speed Cassette
$106.99
SRAM's PG-1070 10-Speed Cassette is light, strong and durable. SRAM's PowerGlide technology keeps your gear changes fast and smooth for quiet, reliable shifting mile after mile.
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 in sizes from 13T to 22T so you can pick the perfect gear.
Origin8 Single Speed Cog
$9.99
A range of sturdy, affordable cogs is an essential part of a single speeder's quiver. Origin-8's Single Speed Cog is available in 13, 14, 16 and 18T sizes is chrome plated to resist rust and increase longevity. It's designed for Shimano/SRAM style cassette bodies and is made with splined, hardened chromoly steel. Now you can easily tailor your gearing for the terrain.
Sunlite Cassette (7-speed)
$21.99
• Steel • 7-speed
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
Sunlite Single Freewheel
$16.99 - $19.99
• Easy-on, easy-off • Available in two chain widths and two colors • Available in six teeth sizes
Shimano Dura-Ace 9100 11-Speed Cassette
$249.99 - $269.99
- Rider Tuned Gearing - Wider Gear Combination: 11-28T/12-28T/11-30T (New Gear Combination) - Closer Gear Combination: 11-25T/12-25T - Lightweight - CFRP & Alloy Spider Arm, 5 Titanium Sprockets - Gear Combination: 11-25T, 11-28T, 11-30T (New Gear Combination), 12-25T, 12-28T
Shimano Ultegra 9-Speed Cassette
$59.99
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.
Shimano SLX 11-speed Cassette
$73.99 - $74.99
Shimano's 11-speed SLX cassette features the same computer-designed shift profiles that have made Shimano shifting synonymous with speed and accuracy. - Series: SLX - Average Weight: 467g
SRAM XG-899 E-Block Cassette
$429.00
SRAM's E-BLOCK shifting technology is a fundamental redevelopment of external drivetrain shifting. On the E-BLOCK cassette, the chain has a defined link position on each cog. Cog architecture has been engineered to work with both inner and outer links of the chain, which allows extremely refined shifting for both inboard and outboard shifts. The result is precise and robust shifting performance in any situation, even with full motor support. - 11-48t, 8-speed cassette machined from case-hardened tool steel - Ideal mid-ship motor gear range - Increased chain wrap on climbing cogs - Symmetric shifting geometry allows fast, precise gear shifts - Optimal inboard and outboard shifting performance - The big steps between cassette cogs is a completely new cassette technology engineered specifically for the demands of E-MTB - Non XD driver body compatible - Gear Ratio: 11-48t - Recommended Group: EX1 - Cogs: 11, 13, 15, 18, 24, 32, 40, 48
SRAM XG-1295 X01 Eagle Cassette
$385.00
Take a quick look at the new X-DOME Eagle cassette. The last dangling shred of an argument in favor of a mountain bike front derailleur is now officially dead. Designed for use with the proven, reliable XD driver body, this 12-speed, 10- to 50-tooth cassette offers an optimal 500-percent gear range at a considerably lighter weight than 2x systems. It carries with it the X-DOME architecture, which, independent tests have concluded, yields the strongest cassettes on the market. New shifting characteristics improve both, inboard and outboard shifting, as well as chain retention. - SRAM’s cassette manufacturing technology provides the greatest durability and lightest weight - All-new shifting features create a smoother, quieter system with enhanced inboard and outboard shift performance - XD driver body compatible - Gear Ratios: 10-50t - Speeds: 12 - Colors: Black - Cogs: 10-50t: 10t, 12t, 14t, 16t, 18t, 21t, 24t, 28t, 32t, 36t, 42t, 50t - Cogs on Cluster: 11 - Compatibility: 12-speed XD driver body compatible
Shimano Dura-Ace R9100 11-Speed Cog Spacer
$4.65
Shimano Dura-Ace R9100 Cassette Spacers
Shimano Deore XT M770 9-Speed Cassette
$70.99
Shimano XT CS-M770 9-Speed Cassette - Aluminum carrier reduces weight and increases rigidity - Cassette Body Type: Shimano/SRAM 8, 9, 10 Speed - Drivetrain Speeds: 9 - Weight: 323 grams
Sunlite 6-Speed Freewheel
$13.99
6-speed freewheel 14-28T SHIMANO Equivalent MF-TZ20
Sunlite 5-Speed Freewheel
$13.99
5-speed bronze color freewheel
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