What Our Gearhead Experts Are Saying:"This frame is built for speed without sacrificing capability. The Hollow Core carbon construction makes it incredibly lightweight, while the DW-Link suspension keeps it efficient on climbs and composed on descents. The adjustable travel adds versatility, letting me tune the ride for different trails. Whether I'm racing XC or pushing for a PR on my favorite loop, the Mach 4 SL delivers."The Pivot Mach 4 SL frame is a masterclass in cross-country performance, blending ultralight Hollow Core carbon construction with a refined DW-Link suspension platform. Shedding 280 grams from its predecessor, this frame is built to fly while maintaining incredible stiffness, durability, and responsiveness. With an adjustable flip chip, the Mach 4 SL adapts between 106mm and 115mm of rear travel, allowing riders to fine-tune their setup for World Cup-level efficiency or a more forgiving trail feel. Internal cable routing, injection-molded frame protection, and size-specific ride tuning ensure every detail is dialed for performance. Whether you're chasing podiums or looking for the ultimate fast and capable XC frame, the Mach 4 SL is built to elevate every ride. Heads up - We do our best to keep bike specs and images current, but occasional component changes can happen without warning-and sometimes the photos might not show the exact build you'll receive. If you want to double-check the details, our Gearheads are always here to help.