Best 12 Speed Bike Cassettes & Freewheels of 2025

The SHIMANO Alivio Cassette is a high-end mountain bike cassette that offers a smooth, comfortable pedaling experience. With HYPERGLIDE technology, this cassette allows for easy and quick assembly with a CS cap. Available in both 12-28 and 12-34T gear specs, you can choose the perfect gear for your ride. The Alivio Cassette also has a high-end appearance that will make you proud to ride it. The close gear steps between primary sprockets create a seamless transition between gears, making for an enjoyable ride.

The SHIMANO SLX CS-M7100 Cassette is a high-performance 12-speed cassette designed for mountain biking excellence. With its rider-tuned gear combinations, it offers advanced shifting performance, giving you the confidence to tackle any trail. The cassette's light and stiff construction reduces inertia, resulting in faster acceleration and increased chain security. Thanks to HYPERGLIDE+ technology, you'll experience better chain engagement, stronger retention, and smoother pedaling, ensuring greater power and confidence on rapidly changing terrain. The cassette also features a Shimano Micro Spline body, which has smaller and more widely distributed splines to limit cog damage on the freehub. Upgrade to the SHIMANO SLX Cassette and enjoy an enhanced riding experience with improved performance and durability.

The SHIMANO XT CS-M8100 Cassette is a high-performance 12-speed cassette designed for mountain biking enthusiasts. With its rider-tuned wide range and close step gear combinations, this cassette ensures excellent performance on the trails. Thanks to the HYPERGLIDE+ technology, the shift ramp designs provide fast and smooth shifts, giving you a seamless riding experience. The light and stiff construction of the cassette reduces inertia, resulting in faster acceleration and increased chain security. Additionally, the Shimano Micro Spline body with smaller and more widely distributed splines limits cog damage on the freehub, ensuring durability and longevity. Upgrade your bike with the SHIMANO XT CS-M8100 Cassette and elevate your mountain biking adventures.

The SRAM NX Eagle PG-1230 Cassette is a 12-speed cassette with 11-50t cog sizes made of steel. It is compatible with Shimano/SRAM 8, 9, 10-Speed and Shimano Dynasys 11-Speed Mountain. The cassette body type is designed to fit Shimano/SRAM 8, 9, 10-Speed and Shimano Dynasys 11-Speed Mountain. This cassette is lightweight with a carrier material of aluminum and a claimed weight of 615g. Ideal for bike cassettes and freewheels.

The Shimano Ultegra Cassette is a 10-speed component designed for road bicycles, featuring a gear range of 12-25 teeth. This range offers versatility, allowing you to tackle both steep climbs and flat roads with ease. The cassette is built to provide smooth shifting, ensuring you can change gears effortlessly while riding. With its durable construction, it stands up to the demands of regular use, giving you reliability on every ride. Whether you're racing or enjoying a leisurely ride, this cassette enhances your cycling experience by improving performance and efficiency.

The DRIFT MANIAC E-Bike Freewheel has 7 speeds with the largest climbing gear of 34 teeth, making it ideal for e-bike conversion, fat bike, cargo bike, city bike, and commuting bike. It is made of Chromoly Steel with a nickel plated finishing, designed to bear the massive torque generated from the electric motor. The freewheel is compatible with motorized freewheel hub and standard threaded freewheel hub, and can be removed using a DNP freewheel removal tool with 12 splines and 22.6mm outer diameter.

The Sram XG-1275 Cassette 12s is an essential component of the SRAM Eagle drivetrain system that offers a lighter, simpler, more durable, and easier to use cycling experience. It features Full Pin Technology that uses 11 lightweight, stamped steel cogs and one 50-tooth aluminum cog held together with high-strength stainless steel pins, an open design that helps in mud clearance for cleaner shifting performance and longer cassette life, XD Driver Body design for an improved interface with the cassette, and X-Glide that improves both inboard and outboard shifting and chain retention.

The Zenlux 12-Speed Sprocket is engineered with a Micro Spline body, which features compact and evenly spaced splines to protect your freehub from cog damage. With a versatile 10-51T gear range, you can tackle various terrains with ease. This sprocket ensures improved chain engagement and stability, giving you the confidence to pedal smoothly, even on challenging trails. Its lightweight and rigid design minimizes inertia, allowing for quicker acceleration and better chain security, making your rides more enjoyable and efficient.

The Shimano Deore Cassette is designed for versatility and performance across various riding styles. Its lightweight spider construction ensures that you won’t be weighed down during your rides. With a broad range of gears and smooth transitions, you can easily tackle different terrains. The DYNA-SYS compatibility guarantees stable and seamless shifting, enhancing your overall riding experience. Additionally, this high-efficiency drivetrain is perfect for aggressive trail riding, providing the power and control you need when navigating challenging paths.

The SHIMANO 9-Speed Cassette is an Alivio CS-HG400 cassette designed for mountain bikes. It is lightweight and easy to install. With a weight of only 0.44 kg, it is easy to carry around and replace on your bike. The cassette is 9-speed, which provides a smooth shifting experience during rides. The item package dimensions are designed to fit most mountain bikes. The cassette is 7.6 cm long, 15.7 cm wide, and 16.5 cm high. This cassette is perfect for avid mountain bikers who want a reliable and efficient shifting experience.