DT Swiss

240 DEG 90 DF Micro Spline Boost Rear Hub

The DT Swiss 240 DEG 90 DF Micro Spline Boost Rear Hub is built for riders who demand near-instant pickup and dependable power transfer in high-torque trail and e-MTB use, pairing a high-engagement ratchet drive with tool-free tuning to manage pedal feedback on technical terrain.

Dialed performance features that matter on the trail

1. 90 points of engagement - Reduces freehub lag for quicker power delivery when ratcheting through switchbacks, ledges, and slow-speed technical moves
2. DEG high engagement ratchet system - Uses simultaneous full ratchet engagement for balanced load distribution and proven durability compared to typical pawl-style mechanisms
3. DF (Degrees of Freedom) adjustability - Tunes pedaling feel and helps reduce pedal kickback with three tool-free settings (0°, 10°, 20°) to better match suspension behavior, terrain, or bike setup
4. Micro Spline freehub body - Designed for modern Shimano Micro Spline cassette compatibility on performance MTB drivetrains
5. Boost rear hub spacing - Supports contemporary trail/enduro frame standards for wheel stiffness and tire clearance where Boost is specified
6. E-bike approved - Rated for e-bike use up to 32 km/h or 250W for riders adding torque without compromising reliability