Mavic Rear hub MR801 CLASRR CL XDR 24H

The MR801s are the worthy successors of the best historical hubs Mavic (501, 571…).

The precisely CNC-machined hubs optimize the umbrella and the alignment of the spokes for stable, robust, and long-lasting builds.

The large sealed cartridge bearings (2 at the front, 4 at the rear) feature a C3 internal play for smooth operation and long-term use.

Our QRM Auto bearing adjustment system guarantees perfect flexibility and play without any adjustment needed from you.

The ID360 ratchet of the freewheel system offers engagement at just 9° and optimal torque transfer, reduces drag, and produces a pleasant sound when the wheel spins freely.

The disc brake version is available in 24, 28, or 32 spoke holes (front and rear). It is compatible with a 12 mm thru-axle and easily convertible to a quick release.

Designed, developed, and tested in France, hand-made in Europe.

Main features

For a stable, lightweight, and robust build

The diameter and distance of the flanges ensure optimal spoke tension and perfect geometry

The thick 17 mm axle provides great lateral stiffness

Super lightweight

Ideal power transfer

40-tooth ratchet for freewheel engagement at just 9°

Low-drag freewheel thanks to the low friction seal

Long lifespan, minimal maintenance, and ease of use

Flawless automatic bearing adjustment system (QRM Auto)

Labyrinth freewheel seal to avoid external contaminants

Freewheel requiring no tools (Shimano, Sram, Campagnolo, XD-R, Microspline) and compatible with various axles

Specifications

Dimensions

Front spacing: 100 mm

Rear spacing: 142 mm

Front disc side flange-support fork centre: 29 mm

Front opposing disc flange-support fork centre: 17 mm

Rear opposing freewheel flange-support frame centre: 35 mm

Rear freewheel flange-support frame centre: 54 mm

Front disc flange diameter: 44 mm

Front opposing disc flange diameter: 44 mm

Rear freewheel flange diameter: 50 mm

Rear opposing freewheel flange diameter: 50 mm

Weight

Front weight: 97 g

Rear weight: 245 g