RockShox BoXXer Ultimate

Overview

Redesigned by the world's fastest racers, for the world's fastest racers, you want BoXXer in your corner. The all-new 38mm chassis is equipped with the DebonAir+ twin tube air spring that will have you thinking it's a coil. Paired with a Charger 3 RC2 damper tuned for downhill speed, BoXXer Ultimate takes you straight to the top step of the podium. And with our new crown adjustment lines, setup is a breeze—no rulers required.

Features

• 38mm chassis designed to meet the needs of the world's fastest racers with balanced stiffness and ride quality.

• DebonAir+ twin tube air spring strikes the perfect balance between butter-smooth small bump feel, added support throughout the travel, and taller ride height for confidence when things get steep.

• Charger 3 RC2 damper tuned for downhill speed delivers exceptional adjustability with High Speed Compression, Low Speed Compression, and Low Speed Rebound adjustments.

• ButterCups block 20% of high-frequency trail chatter, significantly reducing hand and arm fatigue while increasing control and comfort.

• Crown adjustment lines make setup a breeze—no rulers required for precise travel and sag settings.

• Maxima Plush Dynamic Suspension Lube reduces friction, extends service performance, and enhances suspension feel ride after ride.

• 20x110mm Boost axle standard provides increased stiffness and improved wheel security for downhill racing.

• Ultra-low-friction SKF wiper seals provide long-lasting fork performance and improve overall suspension feel.

• Signature colorway BoXXer Electric Red with an all-new graphics package for unmistakable presence on the start line.

• Short fender compatibility with RockShox fender included for muddy conditions.

• 1-1/8" aluminum steerer tube provides the ultimate in strength and durability for gravity racing.

Real-World Performance