Saris Direct Drive Trainer Freehub

The Direct Drive Shimano/SRAM Bike Trainer Freehub (9729T) is a high-quality, precision-engineered trainer accessory designed to enhance compatibility and performance for indoor cyclists using Saris and CycleOps trainers. This freehub body is specifically made to work seamlessly with the Saris H3 Direct Drive Smart Trainer, as well as earlier models such as the CycleOps Hammer and CycleOps H2. Built around the Hyperglide system, the freehub ensures smooth and reliable engagement with Shimano and SRAM 11-speed drivetrains, delivering a consistent and efficient power transfer during your indoor training sessions. Its durable construction and precision machining provide a stable and secure connection between your trainer and cassette, ensuring quiet, smooth operation for realistic ride feel and accurate performance measurement. It is important to note that this freehub is not compatible with 12-speed drivetrain systems. The Saris H3 Direct Drive Smart Trainer, CycleOps Hammer, and CycleOps H2 are designed exclusively for use with 11-speed systems, meaning riders using 12-speed cassettes (such as newer SRAM or Shimano setups) will need to look for alternate compatibility options or conversion kits.