ROLLCii RC39DB BOOST 6-BOLT 32HOLE REAR HUBS
The ROLLCii RC39DB hub set is built for modern mountain bike riding, balancing strength, fast engagement, and long-term reliability in a clean and straightforward design. Featuring a lightweight yet strong hub body paired with a precision-machined 7075 aluminum 17mm axle, the RC39DB is designed to handle hard trail riding, technical descents, and demanding terrain while maintaining a responsive ride feel.
Inside, large-size high-quality ENDURO sealed bearings help keep rolling smooth while improving long-term bearing durability and consistency through mud, rough terrain, and changing weather conditions. The double-phase freehub system uses an independent 2-phase 6-pawl design with a 60-tooth ratchet for quick engagement and a more direct ride feel, especially when climbing technical sections or accelerating out of corners.
Designed for trail, enduro, and custom MTB wheel builds, the RC39DB focuses on the things that matter most on real rides — dependable engagement, solid hub stiffness, smooth rolling speed, and durability you can trust ride after ride.
Specification
- Weight: 328g
- Bearing: 6903 x 3pcs, 6803 x 1pcs
- P.C.D: NDS:58, DS:60.5
- Center to Flange: NDS:36.5, DS:22
- Engagement: 6 Pawls (Two-Phase), 60 Tooth
- Freebody: Shimano HG, Shimano Microspline, or Sram XD (let us know in your order's comments)
