Boss Grade Cartridge Bearing For Bike Hubs Heavy Duty Steel Build With Exact 40mm Inner And 52mm Outer Size For Gnarly Durability And Sick Smoothness Roll Sharp On Every Ride
✔️ 40mm ID 52mm OD 7mm Thick Steel For Front Hub And Cassette Body
This precision 40mm x 52mm x 7mm steel cartridge bearing serves as a direct replacement for Industry Nine bicycle hubs. Perfect for front wheel applications and rear inboard cassette body repairs, this sealed unit enhances rolling efficiency and withstands rugged trail abuse while protecting against corrosion.
✅ Sealed steel construction resists dirt and corrosion for extended service life✅ Exact 40mm inner diameter and 52mm outer diameter match original hub specifications
✅ Thin 7mm profile fits snugly in front hubs and rear cassette body assemblies
✅ Optimized tolerances minimize friction while supporting high loads during aggressive riding
✅ Direct fitment replaces worn Industry Nine bearings without adapter modifications
| Type | Cartridge Bearing 61808 Style |
| Dimensions | 40mm x 52mm x 7mm |
| Material | Hardened Steel |
| Fitment | Industry Nine Hubs |
💡 What is the best way to keep bicycle hub bearings running smooth and avoid grinding noises?
A heavy duty steel cartridge bearing is a handy upgrade for restoring snappy rotation and shutting out grit before it messes up your ride.
- High grade steel components stand up to impacts and corrosive conditions better than standard alternatives.
- Tight tolerances eliminate play in the hub shell, keeping wheels tracking straight and true under load.
- Quick swap installation lets you refresh your drivetrain and wheelset without replacing expensive aluminum hub bodies.