Mavic

Cosmic SL 40 700c Carbon Rim Brake Rear Wheel

The Mavic Cosmic SL 40 is a lightweight carbon rear wheel built around a 40mm-deep rim that balances aerodynamic efficiency with the quick acceleration and handling expected from a road wheel. Mavic's Infinity hub and Instant Drive 360 freehub keep the hub responsive and serviceable, while the 19mm internal rim width works with a wide range of modern road tires. The carbon rim is UST Tubeless Ready and can also be used with traditional tube-type tires. 
Key Features

• 40mm carbon rim provides an aerodynamic advantage without the weight and handling characteristics of deeper aero wheels
• NACA-inspired rim profile helps reduce aerodynamic drag
• 100% carbon fiber rim keeps weight low
• Infinity hub platform optimizes spoke tension and wheel stability
• Instant Drive 360 freehub provides fast engagement and efficient power transfer
• Isopulse spoke lacing improves drive-side and non-drive-side spoke tension balance
• UST Tubeless Ready rim supports tubeless and tube-type tire setups
• Traditional spoke drilling makes the wheel straightforward to service

Who It's For
The Cosmic SL 40 is for road riders looking for a lightweight carbon wheel that adds aerodynamic efficiency without going to an extreme rim depth. It's a strong upgrade for a traditional rim-brake road bike, particularly for riders who want a wheel that works equally well for climbing, rolling terrain, and fast road riding.