What Our Gearhead(R) Experts Are Saying:"I've raced and trained on the Mach 4 SL, and it's one of those bikes that instantly feels fast. The DW-Link suspension stays incredibly efficient under power, and the stiffness of the frame really shines when you're out of the saddle. On long XC days or short-course efforts, it rewards every hard pedal stroke without ever feeling harsh."We line up knowing the Mach 4 SL is built for one thing: speed. From all-out XC laps to technical World Cup-style courses, this bike feels eager the moment we drop the hammer. Pivot's Mach 4 SL carries race-day urgency into every climb, corner, and sprint, making it easy to stay aggressive when the pace ramps up. Pivot pairs the Mach 4 SL with its most advanced carbon construction and an XC-tuned DW-Link suspension that maximizes efficiency while staying active over roots and rocks. Adjustable rear travel via the flip-chip lets us fine-tune the bike for specific courses, while modern geometry, internal routing, and thoughtful details like large bottle clearance make it just as practical as it is fast. When the goal is the podium-or just setting personal bests-this is the bike we want beneath us.