Hubs

- A356 aluminum hub shell with 9mm solid nutted axle (136mm overall axle length) - Choose 70mm or 90mm drum brake front hub (brake lever sold separately)

Whether the goal is a finish line, epic adventure or simply getting back home again, SRAM'S 900 hubs are ready for the challenge. On the inside, the smooth and durable DOUBLE TIME drive mechanism ensures rapid engagement for quick and confident pedal responsiveness. SPEEDBALL bearings provide smooth, long-lasting rotation performance. Multiple spoke-count and cassette-capability options, as well as interchangeable end caps, make the 900 hubs a perfect choice for any disc-equipped road, gravel, cyclocross, cross country, trail, or enduro bike. - Versatile driver body can accept ROAD or MTB drivetrain, full spline or XD cassettes - Fully convertible with tool-free end caps - BOOST variants - 24, 28 or 32 spoke holes

The new standard for durability and price. - Patented Star-Ratchet system - Contact-free seals and high precision build guarantee smooth bearings - Press-fit end caps allow tool-free maintenance and conversion

- eMTB rated with steel axles - 6902 cartridge bearings and robust 10 degree engagement - 32h spoke count - For J-Bend spokes only

Reliable, simple, and e-bike specific hub. To withstand the higher torque of e-drive systems, the 350 hybrid is equipped with steel rotors and a specific 24T ratchet machined out of hardened steel. Oversized bearings ensure smooth running under extreme conditions.