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.

Efficiency Engineered

Built with our highest-modulus carbon fiber, the Mach 4 SL sets a new standard for stiffness-to-weight ratio. A reimagined frame channels every watt into pure acceleration, while updated geometry places you in the optimal pedaling position and keeps handling precise and predictable at speed. On the trail, the Mach 4 SL’s dw-link suspension design delivers instant acceleration out of corners, unwavering traction on steep climbs and the momentum to stay ahead when the pace surges.

XC Evolved

XC courses have evolved, and the Mach 4 SL is evolving with them. A slacker head angle, 120mm fork and refined kinematics deliver composure when the trail gets rough while preserving the bike’s razor-sharp cornering precision. It’s stable when you’re dropping into technical descents yet agile enough to carve corners at race speed.

Refined for the Ride

Every detail serves the rider who demands focus at full gas. Discreet cable ports keep the cockpit clean and versatile, ready for anything from wireless droppers and shifting to full mechanical setups. Pivot’s Toolshed™ downtube storage integrates seamlessly, ensuring essentials are always there when you need them and never in the way. With adjustable travel options from 110 to 120mm, the Mach 4 SL is engineered for adaptability—ready for technical courses, all-day epics and everything in between.

Pivot Toolshed™

The Pivot Toolshed™ in-frame storage system keeps your essentials secure and your ride free from clutter. Designed to integrate seamlessly into the downtube, it preserves frame stiffness and clean aesthetics without compromise. Thoughtful cable management integrated in the door frame keeps lines quiet and protected, while the precision-engineered door closes tight to eliminate rattles on rough terrain. From quick laps to all-day missions, Toolshed™ keeps what you need close at hand so you can focus on the ride.

Size Specific Design & Ride Tuning

Size-specific design goes beyond geometry. We refine frame stiffness profiles, tube shapes and flex characteristics for every size to maintain the same responsive feel and controlled handling from XS to XL. Each rider experiences the performance we intended, with no compromises in efficiency, comfort or durability.

Rockshox Flight Attendant

Flight Attendant makes you the fastest version of yourself-all you have to do is ride. The only automatic suspension system that listens to you and responds in real time, Flight Attendant analyzes the constant flow of ever-changing data to anticipate the perfect suspension setting for you, and for what the trail demands.