In pursuit of pure speed on XC trails, the Stumpjumper makes no sacrifices in terms of weight, efficiency, agility, or ride quality. As the most technologically advanced cross-country hardtails available, they are ruthlessly built to pedal hard, climb fast, and beat everyone on the World Cup circuit or local trails.

WHAT:

90mm-travel Brain-modulated fork on mid to high-end models, with dropouts compatible with our proprietary OS 28 end caps.

WHY:

Delivers the most efficient climbing and out-of-the-saddle acceleration, while retaining smooth, active suspension when taking hits.

HOW:

Brain technology (inside the fork) senses the difference between rider-induced and bump-induced forces, using an inertia valve and oil flow to regulate suspension. When a rider stands to accelerate, the fork immediately stiffens up, eliminating rider “bob.” But when taking a hit, the fork is allowed to compress accordingly. OS 28 end caps make the interface between the hub and fork considerably stiffer than standard QRs, making the fork even more efficient and responsive.