MX801 classic hubs is the solution for strong, stiff and durable MTB custom builds. MX801Classic hubs feature the ID360 freewheel system for perfect torque transfer and high durability.Specifications:Hubs:- Axle material: aluminum- Front and rear bodies: aluminum- Instant Drive 360- QRM Auto- Axles: Front 15X110 Boost , Rear 12X148 BoostVersions- Disc standard : 6 Bolts or Center Lock (R)- Hub width : Boost only (front 110, rear 148)- 28 & 32 holesCompatibility:- Rear axle: 12mm thru axle, convertible to Quick Release with optional adapters- Maximum spoke width: 2,4mm- Freewheel: Shimano HG9, XD or Micro Spline- Rear axle: 12x148 Boost thru axle- Front axle: 15x110 Boost thru axle