Cassettes/Freewheels

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.

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.

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.

Dimension Steel Cogs are splined for BMX and singlespeed hub compatibility. - Steel with chrome finish - Cogs are splined for Shimano BMX and singlespeed hub compatibility - Compatible with 1/2-inch and 1/8-inch chains

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'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, including one with a 36-tooth largest cog for super-easy climbing.

Sometimes less is more. With the 10-speeds, an 11-48T range, and evenly spaced gear steps, the ADVENT X cassette allows riders to shift less often to find the right gear, while still having enough range to ride what they want. Fewer cogs also means less weight and a wider chain for better mud shedding. It even fits on standard 10-speed freehub bodies so you don't need to buy new wheels for no reason. In short, it's everything you want in a high-end drivetrain. - Two alloy large cogs and a full alloy spider eliminate unwanted weight - Ramped cogs aid in shifting under load - Continuously molded construction maintains straightness and durability - Compatible with standard HG freehub bodies and 10-speed chains - Cassette Body Type: Shimano/SRAM 8, 9, 10 Speed - Cassette Cogs: 11-13-15-18-21-24-28-34-40-48

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

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.

• 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

Campagnolo's Chorus Cassette offers precise, fluid shifting for your 11-speed drivetrain. The teeth have been exquisitely engineered and machined from steel, then coated with a nickel-chrome surface treatment and mounted on an aluminum carrier for flawless shifts and excellent durability.

- 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

The SunRace MZ91X 12-Speed XD Cassette features a wide ratio design. - 12-speed wide ratio - For XD® driver body - A7075 42T-50T sprocket - Alloy spiders - Alloy lockring and spacers

With the REACT series, KMC has filled a gap in its lineup of drive solutions. Just like KMC chainrings and sprockets, REACT cassettes are precisely designed to match KMC chains. This perfect synergy reduces friction between individual components and enhances the lifespan of all drive components. Meticulously crafted ascent and descent ramps ensure precise chain guidance, improving shifting performance across the entire range. Made from high-strength steel, REACT cassettes are compatible with Shimano HG - Lifting and lowering ramps provide improved shifting performance, overall component interaction efficiency and stability - Unique lifting ramps design carries the chain smoothly upward on the cogs - Distinctive lowering ramps adeptly align the chain quickly - Cogs sizes are design to provide smoother shifting and precise chain indexing to suit all riders - Optimized for use with KMC e10, X10, X10 EL, and X10 SL chains

Prestacycle UniBlock PRO Cassettes are machined from a single solid block of cold-forged Chrome Molybdenum alloy steel, then heat-treated, tumble-finished and electroplated for added durability, low-friction operation and longer service life. The UniBlock PRO cassettes feature ARC™ shifting tooth profile technology that provides the fastest, smoothest possible shifting to all systems while minimizing the impact to power delivery. - Single block design offers 3D structure to optimize strength and distributes forces that allows Prestacycle to remove more unnecessary material making the ultra-light - Single block design ensures more freehub engagement by reducing torsional loads for less freehub wear and insuring the lowest rolling resistance within the freehub - ARC™ (Advanced Radial Curve™) Shifting Technology optimizes every single tooth pairing for exact-match pairings for both up-and-down shifts provide the highest possible speed and reliability in shifting... Even shifting under load is maximized - Prestacycle UniBlock PRO's unique HG12 interface is compatible with all HG12, HG11 and HG10 Freehubs - Wider inner and outer freehub teeth maintain engagement at all points in all gears to provide an overall increase in freehub contact - Includes red anodized locknut for HG 12 and HG 11 freehub bodies - HG 10 requires Prestacycle's HG 10 lockring (sold separately)

Prestacycle UniBlock Cassettes are a single-piece unit exquisitely machined from a solid block of cold-forged Chrome Molybdenum alloy steel, then heat-treated, tumble-finished and electroplated for added durability and low-friction operation. The 2 largest cogs on the 11-40 and 11-42 HG11 cassettes are crafted with one-piece of high quality 7075 aluminum. - Single block design allows Prestacycle to remove more unnecessary material, making cassettes lightweight and easier to clean - Shifting ramps and profiled teeth provide smooth and consistent shifts - Honeycomb design allows for maximum material removal while maintaining strength - Designed to last longer than standard steel cassettes - For Shimano 12-Speed Drivetrains (NOT compatible with SRAM Road AXS or Campagnolo 12-Speed Systems) - ARC™ Maximum Performance 12 Speed Shifting - Red aluminum locknut included (For HG11 and HG12 freehub only) - Use on HG10 freehub requires Prestacycle HG10 lockring (Sold Separately)

Prestacycle UniBlock Cassettes are a single-piece unit exquisitely machined from a solid block of cold-forged Chrome Molybdenum alloy steel, then heat-treated, tumble-finished and electroplated for added durability and low-friction operation. The 2 largest cogs on the 11-40 and 11-42 HG11 cassettes are crafted with one-piece of high quality 7075 aluminum. - Single block design allows Prestacycle to remove more unnecessary material, making cassettes lightweight and easier to clean - Shifting ramps and profiled teeth provide smooth and consistent shifts - Honeycomb design allows for maximum material removal while maintaining strength - Designed to last longer than standard steel cassettes

Prestacycle UniBlock PRO Cassettes are machined from a single solid block of cold-forged Chrome Molybdenum alloy steel, then heat-treated, tumble-finished and electroplated for added durability, low-friction operation and longer service life. The UniBlock PRO cassettes feature ARC™ shifting tooth profile technology that provides the fastest, smoothest possible shifting to all systems while minimizing the impact to power delivery. - Single block design offers 3D structure to optimize strength and distributes forces that allows Prestacycle to remove more unnecessary material making the ultra-light - Single block design ensures more freehub engagement by reducing torsional loads for less freehub wear and insuring the lowest rolling resistance within the freehub - ARC™ (Advanced Radial Curve™) Shifting Technology optimizes every single tooth pairing for exact-match pairings for both up-and-down shifts provide the highest possible speed and reliability in shifting... Even shifting under load is maximized - Compatible with all Campagnolo 9-12 speed freehubs, as well as N3W adapter kit - Wider inner and outer freehub teeth maintain engagement at all points in all gears and create an overall increase in freehub contact, no matter what gear you are in - Includes red anodized locknut

The microSHIFT ADVENT X E-Series cassette is designed for the rigors of E-bikes. This cassette utilizes a harder material on the small cogs to reduce wear and extend the life of the cassette and chain. - ED coated steel cogs are specifically designed to withstand the added force and torque of eBikes - 11t cog is constructed with hardened chromoly steel to provide durability and extend life - 42t large cog is crafted with high quality aluminum that offers strength and weight savings - Includes a steel lock ring - Compatible with standard HG freehub bodies

The TRP CS-M9050 EVO 12-speed cassette features a wide gear range and provides high wear resistance. - Wide 10-52t gear range provides the right gear for every terrain and elevation - 44 and 52t cogs crafted with 7075-T6 aluminum for high strength and low weight - 10 to 36t gears are constructed with monoblock steel for high wear resistance and longevity

Shimano HG-800 11-speed cassette. - High-performance gear combinations provide superior rider choice - With hub body for MTB to fit a variety of bikes from MTB to road - Average Weight: 335 grams

The SRAM RED AXS XG-1290 cassette is an integral part of the RED AXS drivetrain system. With a 10-tooth small cog and X-Range gearing, it progresses fluidly and quickly through a wide range of gears. Carefully chosen tooth jumps keep the rider in the right gear when you’re out of the saddle on steep climbs and making fine changes to hold a wheel while approaching a sprint. These cassettes are designed specifically for wireless electronic shifting, and the one-piece design offers exceptional weight savings. The XG-1290 cassette is designed to operate with XDR driver bodies. - More gradual gear progression between cogs (at least five one-tooth jumps) while still offering a wider range - One-piece machined steel X-Dome design offers strength with weight savings - 10-tooth start helps provide a wider gearing range - Designed to work with an XDR driver body

Box One Single-Speed Aluminum Cogs are 7075-T6 aluminum alloy. It's designed to fit Shimano compatible cassette hubs and has a 5mm wide inner base, giving a more solid interface with the cassette body. The alloy cogs are anodized black with laser-etched graphics. FEATURES - Shimano Compatible Driver - 7075-T6 Alloy - 3/32" or 1/8" Chain Compatible - Lightweight SPECIFICATIONS - Material: 7075-T6 Aluminum - Process: Laser-etched logos Weight - 13t: 8 grams / 0.3 ounces - 14t: 11 grams / 0.4 ounces - 15t: 13 grams / 0.5 ounces - 16t: 14 grams / 0.8 ounces - 17t: 16 grams / 0.6 ounces - 18t: 18 grams / 0.65 ounces

Precision CNC CroMo construction - 9 Pawl/108 Point/3.33° Engagement for instant power transfer - 8 spline removal - Chrome plated

Claris HG50 cassettes ensure a durable and low maintenance system that's easy-to-operate, with accurate and light-action shifting for Shimano 8-speed drivetrains. - Nickel plated finish for corrosion resistance - Steel lock ring - MODEL NO: CS-HG50-8 - SERIES: SHIMANO CLARIS R2000 Series - Compatible chain: CN-HG71 - Speeds: 8-speed - Type: HG

The Sunrace MX3 10 speed cassette is a cost effective upgrade or replacement cassette. - Alloy spiders, lockring and spacers - Cassette Body Type: Shimano/SRAM 8, 9, 10 Speed - Drivetrain Speeds: 10

The Campagnolo EKAR 13-Speed Cassette offers full range to match or exceed any 2x systems. - The 9-tooth sprocket allows full range with zero drop in efficiency - Compact cassette has a narrow design with quick changes, lightweight, improved chain security - Crafted from tough materials and durable design, with no weight penalty - Closer low gear spacing creates natural cadence progression - Wider higher gear spacing creates top-end speed options - The 2-piece block blends strength of steel with light weight of alloy - Compatible with the Campagnolo N3W driver body for great versatility and full compatibility - 10-44T cassette is ideal for gravel and adventure riding

The Campagnolo Chorus cassette offers cyclists even more versatility and greater choice and autonomy in terms of available gears. - Designed as the same width as 11-speed cassettes to maximize compatibility with wheels and frames - The two bigger sets of three in a single-block piece eliminate energy dispersion - Surface treatment increases durability and smoothness - Cassette Body Type: Campagnolo 10/11/12 Speed - Drivetrain Speeds: 12 - Color: Silver - Defined Color: Silver

- 9 pawl / 108 point / 3.33° engagement for instant power transfer - CNC chromoly construction - Precision bearings - 8-key installation and removal - 1.181" x 25.4TPI / 30mm x 1mm BMX-specific thread - Chrome-plated

The Hex Lab 3/32" Titanium Cogs are CNC-machined from bulletproof titanium. They are designed to fit Shimano compatible cassette hubs and have a 5mm wide inner base, giving a more solid interface with the cassette body. Key differences: The Hex Lab 3/32" CNC Titanium Cogs are engineered and crafted for durability without compromising weight. They offer the strength and wear resistance of steel and are lighter than aluminum. As a result, they yield better shock absorption than the Box One Aluminum or Box One Chromoly Cogs. They are available in an oil slick or natural finish. FEATURES - Shimano Compatible Driver - Ti-6Al4V Heat-Treated to HRC35 - 3/32" or 1/8" Chain Compatible - Lightweight + Durable SPECIFICATIONS - 13 tooth: 13 grams (.45 oz) - 14 tooth: 16 grams (.55 oz) - 15 tooth: 19 grams (.67 oz) - 16 tooth: 22 grams (.77 oz) - 17 tooth: 24 g (.85 oz) - 18 tooth: 28 g (1.00 oz)