Mavic Cosmic S 42 Disc Rear 2025

Welcome to a new dimension in cycling. The Mavic Cosmic S 42 Disc wheel, with its ultralight all-carbon rim, delivers instant acceleration and improved control.

Thanks to a 21mm internal width, this wheel maximizes tire volume, increasing confidence, improving efficiency and optimizing cornering performance.

A profile height of 42mm and wind-tunnel-tested flat spokes maximize the Cosmic S 42 Disc’s aerodynamics and give it lateral stability at high speeds. Cyclists looking for versatility on undulating or mountain roads will find what they're looking for. Low weight guarantees excellent capabilities on the toughest slopes, so you can tackle the Alpe d'Huez like it’s a hill. Mavic’s UST Tubeless Ready technology simplifies tire installation, offering improved comfort and efficiency.

High-quality spokes, durable bearings and Mavic ID360 freewheel technology guarantee exceptional strength and longevity. Hand-assembled in Europe, the Cosmic S 42 Disc is the result of Mavic’s extensive experience in manufacturing high-quality wheels.

Rim

• Material: Material: 100% carbon fiber
• Tire: UST Tubeless and tubetype
• Height : 42 mm
• Internal width: 21 mm
• ETRTO : 622x21TC
• Tubeless Ready Disc rim design (with Mavic Tubeless Tape)
• Traditionnal drilling

Spokes

• Material: steel
• Shape: bent radius, roud
• Nipples : Steel, ABS
• Count: 24
• Lacing: crossed 2

Hub

• Body design : Classic
• Hub with center lock (R) brake rotors mount
• Axle : 12X142 
    - Compatibility : Convertible to quick release with optional adapters
    - Compatibility : 12x135 mm with optional adapters
• Instant Drive 360
• QRM Auto
• Freehub options
    - Standard (Shimano-Sram with the first cog of 11 T or more teeth)
    - Standard light (Shimano-Sram with the first cog of 11 T or more teeth)
    - XD-R (Sram with the first cog of 10 T or less teeth)
    - Campagnolo ED11
    - Campagnolo N3W
    - Microspline ( Shimano 12S)

Use : 

• ASTM CATEGORY 2 : ROAD AND OFFROAD WITH JUMPS LESS THAN 15 CM
• For a longer longevity of the wheel, Mavic recommends that the total weight supported by the wheels doesn't exceed 120kg, Bike included

Technologies

• QRM Auto (cartridge bearing with double sealed with C3 internal clearance)
• ID360 (double ratchet system for quick engagement and acceleration)
• UST Tubeless Ready Technology

Warranty

• 2 years
• Can be extended to 3 years by registring in the Mavic Care Program (max 2 month after the purchase)

Comes with

• UST valve and accessories
• 12x142 mm adapters installed
• User manual

Mavic weight : 885 gr