The AR40 is the latest addition to the Foundation lineup. Featuring an aerodynamically optimized 40mm rim depth front and rear with a 25mm internal rim width, the AR40 is designed to deliver ultimate versatility for the road ride and racer looking for performance on and off-road.
HIGHLIGHTS
- 100% ENVE Designed oversized 42 mm ratchet drive system
- Longer bearing life
- Reduced axle stress = less bearing drag and prolonged bearing life
- Drive component retention
- Perfect Preload – automatic preload adjustment
- Low maintenance & easy serviceability



AERODYNAMICS: WIND TUNNEL TESTED, REAL-WORLD PROVEN


TUBELESS: ROLL FAST, FLAT LESS
WIDE HOOKLESS BEAD AND MOLDED SPOKE HOLES

