Pivot

Mach 4 SL World Cup XX SL Eagle Transmission Mountain Bike

What Our Gearhead® Experts Are Saying:

"I’ve ridden the World Cup XX build back-to-back with lower-tier kits, and the difference is obvious. The bike feels lighter on accelerations, more precise under power, and incredibly composed at race speed. The XX SL Transmission shifts flawlessly when I’m pushing hard, and the Reverb AXS dropper adds real confidence on technical XC descents."

When race day demands everything we’ve got, the Mach 4 SL World Cup XX build answers without hesitation. It’s the kind of bike that feels alive beneath us—eager on climbs, calm at speed, and relentlessly efficient when the course starts to bite back. From short-track intensity to full-distance XC efforts, it thrives when the pace is unforgiving.

Pivot’s size-specific carbon frame forms the backbone of the Mach 4 SL, delivering exceptional stiffness without unnecessary weight. The XC-tuned DW-Link suspension keeps power transfer crisp while maintaining traction through roots, rocks, and braking bumps. With adjustable rear travel and Factory-level suspension components, this build is tuned for riders who want maximum performance with zero distractions.

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.