Fulcrum Speed55 DB Rear Wheel – XDR/Center-Lock MTB Wheelset (12x142mm) Black

Engineered for cyclists who demand uncompromising performance on the toughest courses, the Speed 55 DB wheels deliver unmatched aerodynamics and resilience tailored for disc brake systems. Whether you’re tackling steep mountain descents or pushing through grueling time trials, these wheels combine cutting-edge design with real-world durability to elevate your ride.

The heart of these wheels lies in their 55mm deep-section carbon fiber rim, which maximizes airflow efficiency while maintaining structural integrity thanks to an undrilled bed—ideal for seamless tubeless setups and heavy loads during endurance racing. Paired with a 19mm internal width, this design ensures optimal tire compatibility, supporting both wider clincher tires and tubeless configurations for enhanced traction and stability on varied terrains like rough gravel or slick asphalt.

Smoothness meets power with ceramic-coated bearings, which reduce friction and enhance rotational efficiency during high-speed sprints or prolonged climbs. Meanwhile, the 2:1 spoke ratio and robust disc brake-specific hubs work together to handle aggressive braking forces without flexing—critical for maintaining control during high-intensity races or all-day epics on technical routes.

Perfect for competitive athletes and adventure riders alike, these wheels excel in scenarios where precision and strength are paramount: think criterium races requiring sharp turns or century rides demanding reliability over long miles. Their lightweight yet rigid construction translates to faster acceleration and sustained speed without sacrificing handling under pressure—whether you’re chasing podium finishes or exploring rugged trails on your disc-equipped road bike.

Experience race-winning aerodynamics paired with disc brake confidence—designed to turn every ride into a triumph.