RockShox

BoXXer Ultimate Charger 3 27.5in Boost Fork

What Our Gearhead® Experts Are Saying:

"I’ve used a lot of forks, but nothing quite matches the small-bump sensitivity and stability of the BoXXer Ultimate 27.5. With the 38mm stanchions and RC2 damper, it’s incredibly dialed for fast, technical runs. Setup is fast with the crown markings, and the ButterCups? Total game-changer for fatigue."

Purpose-built for the modern downhill racer, the RockShox BoXXer Ultimate 27.5" combines cutting-edge damping technology with an all-new chassis to deliver a ride that’s responsive, composed, and relentlessly fast. At its core is the redesigned 38mm stanchion platform, engineered to strike a balance between torsional stiffness and trail feel. Whether we’re pushing through high-speed compressions or skipping across braking bumps, this chassis tracks predictably and gives us the confidence to push harder.

The DebonAir+ twin tube spring, enhanced with ButterCups, gives this fork an ultra-supple off-the-top feel while maintaining support deep into its 200mm travel. The Charger 3 RC2 damper brings independent high- and low-speed compression along with a revised low-speed rebound circuit, allowing us to tune for every race course or bike park session. And the new crown design features setup lines to make dialing fork height fast and foolproof—perfect for frequent frame or crown swaps.

This fork is compatible with 27.5in wheels and post-mount disc brakes, and it runs a 20x110mm BOOST axle for added front-end rigidity. Whether you’re racing DH World Cups or chasing KOMs on shuttle laps, the BoXXer Ultimate 27.5 gives us the speed and precision we need to lead the charge.