Cassettes/Freewheels
Inventory varies across our stores. Please call to ensure the product you are looking for is in stock at the location you plan to visit before stopping by. You can always buy online for in-store pickup.
Belmont Wheelworks - 617.489.3577 | ACE Wheelworks - 617.776.2100

$14.95
We did our homework on this cog and we think you will be pleased with the result! This 16t cog smooths out the cog to cog transition when using our GC and a standard 10 speed 11-36 cassette. You should expect this to shift well and last as long as the rest of your cassette cogs of similar size. Here are the transitions WITHOUT the 16t cog (4 tooth max jump): - Remove the 15t -> 11-13-17-19.... - Remove the 17t -> 11-13-15-19... Here are the transitions WITH the 16t cog (3 tooth max jump): - Remove 15t & 17t-> 11-13-16-19... Compatibility: Shimano 10 speed cassettes - XT 11-36t (CS-M771) - XTR 11-36t (CS-M980) - Other 11-36t Shimano cassettes like SLX HG81 11-36t - Modification required (must drill out rivets holding the 17t to the larger cogs) SRAM 10 speed cassettes - PG 1030, 1050, and 1070 - 11-36 and 12-36 - X0 11-36t(XG - 1080) - Remove the 14t rather than the 17t

$17.99 - $19.99
Shimano Tourney CS-HG200-7 7-speed cassette
Combinations:
- 12 – 28T: 12-14-16-18-21-24-28T (bm)
- 12 – 32T: 12-14-16-18-21-26-32T (bp)

$20.00
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.

$21.00 - $22.99
These 9-speed cassettes are nickel plated for durability and constructed using the same processes as microSHIFT's higher-end cassettes, resulting in rapid, responsive shifting at an affordable price.
- Nickel-plated
- Continuously molded cogs are straighter than stamped steel, resulting in more consistent, predictable shifting performance
- Precision ramps and chamfers for rapid chain movement
- Compatible with SRAM and Shimano 9-speed systems
- Steel lock ring
Gear combinations:
- 11-25T: 11-12-13-15-17-19-21-23-25
- 12-25T: 12-13-14-15-17-19-21-23-25
- 11-28T: 11-12-13-15-17-19-21-24-28
- 11-32T: 11-13-15-17-19-21-24-28-32
- 11-34T: 11-13-15-17-19-21-24-28-34
- 11-36T: 11-13-15-18-21-24-28-32-36

$21.99
These 8-speed cassettes are nickel plated for durability and constructed using the same processes as microSHIFT's higher-end cassettes, resulting in rapid, responsive shifting at an affordable price.
- Nickel-plated
- Continuously molded cogs are straighter than stamped steel, resulting in more consistent, predictable shifting performance
- Precision ramps and chamfers for rapid chain movement
- Compatible with SRAM and Shimano 8-speed systems
- Steel lock ring
Gear combinations:
- 12-25T: 12-13-15-17-19-21-23-25
- 11-28T: 11-13-15-17-19-21-24-28
- 11-32T: 11-13-15-18-21-24-28-32
- 12-32T: 12-13-15-18-21-24-28-32
- 11-34T: 11-13-15-18-21-24-28-34

$22.99
- 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

$24.99
- 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

$24.99
Dimension Freewheels are excellent drivetrain component replacements. With smooth shifting performance and durable construction, they'll help breathe new life into older bikes.
- A must have in any bicycle service department
- One-piece design
- Shimano index compatible
- Works with most friction shifters
- Suitable for use with e-bike drivetrains

$24.99
Dimension Freewheels are excellent drivetrain component replacements. With smooth shifting performance and durable construction, they'll help breathe new life into older bikes.
- A must have in any bicycle service department
- One-piece design
- Shimano index compatible
- Works with most friction shifters
- Suitable for use with e-bike drivetrains

$24.99 - $29.99
MicroSHIFT's H10 cassettes are manufactured to exacting tolerances for straightness, shift quality, and durability, resulting in responsive shifting performance that lasts longer than you might expect.
- Sprockets are chrome-plated for hardness and corrosion resistance
- Continuously molded cogs are straighter than stamped steel, resulting in more consistent, predictable shifting performance
- Precision ramps and chamfers for rapid chain movement
- Compatible with SRAM and Shimano 10-speed systems
- Steel lock ring
Gear combinations:
- 11-25T: 11-12-13-14-15-17-19-21-23-25
- 11-28T: 11-12-13-14-15-17-19-21-24-28
- 11-32T: 11-12-13-15-17-19-21-24-28-32
- 11-34T: 11-12-13-15-17-19-21-24-28-34
- 11-36T: 11-13-15-17-19-21-24-28-32-36

$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.

$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.

$29.99
MicroSHIFT's H11 cassettes are manufactured to exacting tolerances for straightness, shift quality, and durability, resulting in responsive shifting performance that lasts longer than you might expect.
- Continuously molded cogs are straighter than stamped steel, resulting in more consistent, predictable shifting performance
- Precision ramps and chamfers for rapid chain movement
- Compatible with SRAM and Shimano 11-speed systems
- Steel lock ring
- Chrome plated for hardness and corrosion resistance
Gear combinations:
- 11-25T: 11-12-13-14-15-16-17-19-21-23-25
- 11-28T: 11-12-13-14-15-16-17-19-21-24-28
- 11-32T: 11-12-13-14-15-17-19-21-24-28-32
- 11-42T: 11-13-15-17-19-21-24-28-32-36-42

$31.00
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. It’s a full-on, dedicated SRAM 1x cassette for gravity that lets you keep some money for a lift ticket. GX DH—Get Some.
- The PG-720 cassette is an integral part of the SRAM 1x DH drivetrain system
- This is the most affordable full-featured, dedicated 1x DH cassette in the industry
- Fewer cogs allow for a faster transition from starting cog to highest cog
- More rear wheel clearance around spokes
- Fully compatible with the SRAM X01 DH drivetrain
- Splined driver body compatible
- Weight: 224 grams
- Gear-Ratio:11 – 25T
- Speeds: 7
- Recommended Group: GX DH

$31.99 - $33.99
- MODEL NO: CS-HG400-9
- SERIES: SHIMANO ALIVIO M4000 Series
- Compatible chain: HG 9-speed
- Speeds: 9-speed
- Type: HG

$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.

$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.

$37.99
- MODEL NO: CS-HG50-8
- SERIES: SHIMANO CLARIS R2000 Series
- Compatible chain: CN-HG71
- Speeds: 8-speed
- Type: HG

$38.99
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.

$39.99
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.

$40.99
CS-G100 cassettes combine microSHIFT's continuously molded cogs with a CNC machined aluminum spider to deliver rapid, precise shifting at a lower weight.
- Continuously molded cogs are straighter than stamped steel, resulting in more consistent shifting performance from cassette to cassette
- CNC machined aluminum alloy spider carrier saves weight
- Sprockets are chrome-plated for hardness and corrosion resistance
- Precision ramps and chamfers for rapid chain movement
- Compatible with SRAM and Shimano 10-speed systems
- Aluminum lock ring
Gear combinations:
- 11-25T: 11-12-13-14-15-17-19-21-23-25
- 11-28T: 11-12-13-14-15-17-19-21-24-28
- 11-36T: 11-13-15-17-19-21-24-28-32-36

$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.

$42.99 - $43.99
CS-G110 cassettes combine microSHIFT's continuously molded cogs with a CNC machined aluminum spider to deliver rapid, precise shifting at a lower weight.
- Continuously molded cogs are straighter than stamped steel, resulting in more consistent, predictable shifting performance
- CNC machined aluminum alloy spider carrier saves weight
- Sprockets are chrome-plated for hardness and corrosion resistance
- Precision ramps and chamfers for rapid chain movement
- Compatible with SRAM and Shimano 11-speed systems
- Aluminum lock ring
Combinations:
- 11 – 25T: 11-12-13-14-15-16-17-19-21-23-25
- 11 – 28T: 11-12-13-14-15-16-17-19-21-24-28
- 11 – 32T: 11-12-13-14-15-17-19-21-24-28-32

$44.99
Dimension Freewheels are excellent drivetrain component replacements. With smooth shifting performance and durable construction, they'll help breathe new life into older bikes.
- A must-have in any bicycle service department
- One-piece design
- Shimano index compatible
- Works with most friction shifters
- Suitable for use with e-bike drivetrains

$49.99
Dimension Freewheels are excellent drivetrain component replacements. With smooth shifting performance and durable construction, they'll help breathe new life into older bikes.
- A must-have in any bicycle service department
- One-piece design
- Shimano index compatible
- Works with most friction shifters
- Suitable for use with e-bike drivetrains
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