Cassettes/Freewheels

$209.00 - $249.00
The e*thirteen XCX+ is a lightweight and durable cassette that offers excellent range, and is compatible with both SRAM and Shimano drivetrains.
- 10 steel cogs and 1 aluminum cog provide durability
- Ultra-stiff cluster keeps power at the wheels
- 378% range
- Compatible with Shimano and SRAM drivetrains
- Cassette Body Type: SRAM XD 11/12 Speed
- Cassette Cogs: 9-11-13-15-17-19-21-24-27-30-34
- Drivetrain Speeds: 11
- Designed for ebike: Yes
- Color: Black
- Weight: 271 g

$249.00
The TRS Plus Cassette offers impressive range and crisp shifting performance on both SRAM and Shimano drivetrains. Using a unique two-piece, individually replaceable assembly and a 9t cog, the TRS+ provides superior ground clearance in a compact package so you can clean steeper climbs. More range, more fun, same standard.
- 511% range is great for modern 1x drivetrains
- 10 steel cogs, plus 1 aluminum cog increase durability
- Saves weight by using smaller chainrings and shorter chains, which also provides better ground clearance
- Designed for use with eBike drivetrains
- Compatible with Shimano and SRAM drivetrains
- Cassette Body Type: SRAM XD 11/12 Speed
- Cassette Cogs: 9-10-12-14-17-20-24-28-33-39-46
- Drivetrain Speeds: 11
- Color: Black
- Weight: 390 g

$249.00
The TRS Plus Cassette offers impressive range and crisp shifting performance on both SRAM and Shimano drivetrains. Using a unique two-piece, individually replaceable assembly and a 9t cog, the TRS+ provides superior ground clearance in a compact package so you can clean steeper climbs. More range, more fun, same standard.
- The TRS Plus cassette plugs directly into all SRAM Eagle and Shimano XTR, XT, and SLX 12-speed drivetrains
- Smaller 9-46T cassette gives a better chainline, for longer-lasting drivetrains
- The assembly utilizes XD™ Driver mounting to enable a 9-46T 12-speed cassette, keeping the drivetrain simple, yet providing the gear range of a 2X system
- Designed to offer better ground clearance and be run with a smaller chainring to keep equivalent 10-50T gearing (10-50T w/34T chainring = 9-46T w/32T chainring)
- 511% range
- Cassette Body Type: SRAM XD 11/12 Speed
- Cassette Cogs: 9-10-12-14-16-18-21-24-28-33-39-46
- Drivetrain Speeds: 12
- Color: Black
- Weight: 336 g

$279.00
The TRS Plus Cassette offers impressive range and crisp shifting performance on both SRAM and Shimano drivetrains. Using a unique two-piece, individually replaceable assembly and a 9t cog, the TRS+ provides superior ground clearance in a compact package so you can clean steeper climbs. More range, more fun, same standard.
- The TRS Plus cassette plugs directly into all SRAM Eagle and Shimano XTR, XT, and SLX 12-speed drivetrains
- 2 aluminum cogs and 10 steel cogs offer both light weight and durability
- Designed for use with standard and eBike 12-speed drivetrains
- 556% range
- Cassette Body Type: SRAM XD 11/12 Speed
- Cassette Cogs: 9-11-13-15-17-20-23-27-31-36-42-50
- Drivetrain Speeds: 12
- Designed for ebike: Yes
- Color: Black
- Weight: 395 g

$299.00
The e*Thirteen TRS Plus 12-Speed Upgrade Kit lets you upgrade your existing 11-speed SRAM drivetrain to a 12-speed drivetrain without needing new cranks, chainrings, shifters, or derailleurs. All parts and required tools are included including new internals for the SRAM shifter.
- Kit is also compatible with Shimano XTR, XT, and SLX 12-speed drivetrains when used with Shimano 12-speed derailleurs and shifters
- Smaller 9-46T cassette gives a better chainline, for longer-lasting drivetrains
- The assembly utilizes XD Driver mounting to enable a 9-46T 12-speed cassette, keeping the drivetrain simple, yet providing the gear range of a 2X system
- Cassette Body Type: SRAM XD 11/12 Speed
- Cassette Cogs: 9-10-12-14-16-18-21-24-28-33-39-46
- Drivetrain Speeds: 12
- Color: Black
- Weight: 336 g

$74.95
The GC line of cassette extender cogs allow you to modify your 10-speed cassette into a wide range cassette. To achieve the optimal shifting, the GCs are optimized for Shimano or SRAM cassette.
Compatibility:
- Compatible with SRAM 10-speed cassettes
- Compatible with all 10 speed rear derailleurs and chains
- Note that you may need a longer chain that you currently have on your bike
- Chain stretch should be less than .5 when installing a new GC
- Can be run in 2x configuration with a long cage rear derailleur
- These fit very tight on certain Stan's No Tubes hubs like the 3.30 and the Easton X4 hubs. With a little filing and some grease they will go on.

$74.95 - $79.95
- Extended range aluminum cog for those wanting 1x10 with a full range of gears
- Only fits Shimano XT/XTR 11-36t (M771/M980) or SRAM X5/X7/X9/X0 11-36t 10sp cassettes (not compatible with 2011 and older SRAM derailleurs)
- Requires removal of the 17T or 15T cog and spacer from existing cassette
- Longer B-screw (sold separately) only needed for about 50% of Shimano derailleurs
- May require a longer 10sp chain. Very tight fit on Stans 330 rear hub splines
- Designed and manufactured in the USA from 7075-T6 aluminum alloy

$79.95
The product that set the standard and still the best available! The GC line of cassette extender cogs allow you to modify your 10-speed cassette into a wide range cassette. To achieve the optimal shifting, the GCs are optimized for Shimano or SRAM cassette so always select the correct type for the cassette brand you have.
Compatibility:
- Compatible with SRAM 10-speed cassettes listed on the GC tech page
- Compatible with all 10-speed chains
- Note that you may need a longer chain that you currently have on your bike
- Chain stretch should be less than .5 when installing a new GC
- Compatible with all 10 speed rear derailleurs except non-clutch type SRAM rear derailleurs model year 2012 and older
- These older rear derailleurs do work with the GC40.
- Can be run in 2x configuration with a long cage rear derailleur
- These may fit tightly on some over-sized hub bodies such as Stan's No Tubes 3.30 and the Easton X4 hubs. With a little filing and some grease they will go on.

$30.00 - $35.00
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.

$35.00
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.

$12.10 - $17.99
• Easy-on, easy-off
• Available in two chain widths and two colors
• Available in six teeth sizes

$3.99 - $5.00
- 3-spline steel cogs for use with Sturmey 3-speed (and 5-speed) internal gear rear hubs
- Flat or dished for tuning chainline. Xylan coating for greater durability

$5.00
- 3-spline steel cogs for use with Sturmey 3-speed (and 5-speed) internal gear rear hubs
- Flat or dished for tuning chainline. Xylan coating for greater durability

$16.99
- MODEL NO: CS-HG41-7
- SERIES: SHIMANO
- Combination: 11-13-15-18-21-24-28T (ac)
- Combination name(Group name): 11-28T (ac)
- Compatible chain: IG/HG
- Speeds: 7-speed
- Type: HG

$20.99 - $34.99
- MODEL NO: CS-HG50-8
- SERIES: SHIMANO CLARIS R2000 Series
- Compatible chain: CN-HG71
- Speeds: 8-speed
- Type: HG

$27.99
Shimano Altus M2000 Series 9-speed cassette.
Combinations:
- 11 – 32T: 11-13-15-17-19-21-24-28-32T (bo)
- 11 – 34T: 11-13-15-17-20-23-26-30-34T (bn)
- 11 – 36T: 11-13-15-17-20-23-26-30-36T (bw)

$28.99 - $35.99
- MODEL NO: CS-HG400-9
- SERIES: SHIMANO ALIVIO M4000 Series
- Compatible chain: HG 9-speed
- Speeds: 9-speed
- Type: HG

$29.89 - $39.99
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.

$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.

$48.99 - $64.99
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.

$62.99 - $89.99
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.

$79.99 - $119.99
Shimano XT CS-M770 9-Speed Cassette
- Aluminum carrier reduces weight and increases rigidity
- Cassette Body Type: Shimano/SRAM 8, 9, 10 Speed
- Weight: 323 grams

$389.99
- XTR M9100 Series CS-M9100-12 12-speed cassette
- Average weight: 357g (10-45T), 367g (10-51T)
Combinations:
- 10 – 45T: 10-12-14-16-18-21-24-28-32-36-40-45T
- 10 – 51T: 10-12-14-16-18-21-24-28-33-39-45-51T

$18.00
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.

$21.00
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.
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