Features:- MX801 Classic are the legacy of the renown Mavic hubs from the past (501, 571…), featuring Mavic exclusive hub technologies MX801 Classic hubs are again available to MTB wheel builders- The precisely CNC machined hub shells optimize spoke dish and spoke alignment for a strong and durable builds. MX801 Classic hubs come with 28- or 32-holes drilling option.- The ID360 ratchet style freewheel system offers quick engagement and perfect torque transfer, with low drag and ease of maintenance. ID360 is fully compatible with any freewheel standard.- Large sealed cartridge bearings (2 front, 4 rear) offers C3 internal clearance for durable and smooth operation.- Our QRM Auto preload system guarantees smoothness and perfect play without any intervention.Specifications:Hubs:- Axle material: aluminum- Front and rear bodies: aluminum- Instant Drive 360- QRM Auto- Axles: Front 15X110 Boost , Rear 12X148 BoostCompatibility:- 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 axleCompatible Adapters and freewheel bodies:- ID360 Shimano HG9 alloy freewheel body ([LV3780100])- ID360 Sram XD freewheel body ([LV3740100])- ID360 Shimano Micro Spline alloy freewheel body ([LV3990100])- Boost : Torque Caps ([LV2650200])Versions:- Disc standard : 6 Bolts or Center Lock (R)- Hub width : Boost only (front 110, rear 148)- 28 & 32 holes