Rim tape adds weight, complicates tubeless setup, and creates a potential failure point where air can escape. Mavic's Fore Carbon technology eliminates it entirely on the Cosmic SLR 45 Disc Carbon Front Wheel by embedding threaded metal inserts directly into the carbon layup during molding. Spokes screw into these inserts from below, leaving the upper rim bed completely undrilled and inherently airtight. The result saves 30 grams per wheel while creating a more reliable tubeless seal that simplifies setup and eliminates tape-related maintenance.

The 45mm carbon rim uses a UD² external layer that combines the distinctive raw carbon aesthetic with an optimized laminate structure. This layup saves an additional 40 grams per rim compared to traditional construction by reinforcing only the high-stress areas while reducing material elsewhere. At 676 grams, the front wheel delivers race-ready weight while the 45mm depth provides aerodynamic benefits that compound at speed. The 23mm internal width supports modern tire volumes from 28mm to 64mm, allowing rubber to assume the rounder profile that improves cornering grip and permits lower pressures.

Elliptical aero spokes save another 5 watts compared to round spokes by reducing turbulence as air flows past the rotating wheel. The straight-pull design with anti-rotation features prevents spoke wind-up during tensioning, and the crossed-two lacing pattern distributes braking forces across multiple spokes. Brass nipples with M6 threading provide secure engagement with the embedded rim inserts, and because spokes screw in from below, the wheel can be serviced without removing the tire.... Read More