The Mach 4 SL is XC, distilled to its fastest form--engineered for efficiency, sharpened for precision and built to master the modern racecourse. Born from the crucible of World Cup XC and epic endurance racing, it balances a feathery build with an obsession for stiffness, control and efficiency. This is Pivot's sharpest tool for riders who live in the red zone, engineered to crush climbs and meet the intense demands of real trails where races are actually won.