Race-ready weight meets all-terrain capability in the Mavic Cosmic SLR 45 Disc Carbon Rear Wheel. At 806 grams, this wheel pairs with the 676-gram front for a 1482-gram wheelset that climbs without compromise while the 45mm depth delivers aerodynamic benefits on flatter terrain. The UD² carbon layup uses a distinctive raw carbon external layer combined with an optimized laminate structure that reinforces high-stress areas while reducing material elsewhere, saving 40 grams per rim compared to traditional construction methods.

Mavic's Fore Carbon technology eliminates rim tape by embedding threaded metal inserts directly into the carbon during molding. Spokes screw into these inserts from below, leaving the upper rim bed completely undrilled and inherently airtight. This approach saves 30 grams per wheel while creating a more reliable tubeless seal that simplifies setup and eliminates tape-related maintenance. Because spokes attach from below, the wheel can be trued or spokes replaced without removing the tire — a practical advantage for riders who maintain their own equipment.

Elliptical aero spokes reduce turbulence as air flows past the rotating wheel, saving 5 watts compared to round profiles. The straight-pull design with anti-rotation features prevents spoke wind-up during tensioning, and brass nipples with M6 threading provide secure engagement with the embedded rim inserts. The Infinity hub platform optimizes spoke tension distribution using a non-contact lacing pattern that eliminates creaking under load, with spoke lengths matching front to rear across the wheelset.... Read More