BoXXer Ultimate Charger 3 29in Boost Fork
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Warning: California Proposition 65
Built for pure speed, BoXXer Ultimate 29in brings DH precision with ButterCups and Charger 3
What Our Gearhead® Experts Are Saying:
"The BoXXer Ultimate 29 has been my go-to for steep tracks this year. Between the long-travel support, easy tuning, and how planted the front end feels, it’s hard to find a better fork. The new setup lines on the crown save a ton of time too."
The RockShox BoXXer Ultimate 29" represents the pinnacle of downhill suspension technology, redesigned to push limits on the steepest tracks in the world. Built around a new 38mm stanchion chassis, it delivers the stiffness needed for aggressive line holding while offering the compliance to track across off-camber roots and braking bumps. With 200mm of travel, every hit is smoothed out by the refined DebonAir+ air spring and vibration-damping ButterCups.
At the heart of its performance is the Charger 3 RC2 damper, offering fully independent high-speed compression, low-speed compression, and rebound adjustments. Every click is tuned to perfection, giving us precise control without overlap or compromise. The fork includes SKF low-friction wiper seals and Maxima Plush Dynamic Suspension Lube to maintain buttery performance through the harshest conditions.
Offered with 48mm or 52mm offsets to fine-tune ride geometry, the BoXXer Ultimate 29 is fully compatible with 29in wheels, post-mount brakes, and RockShox’s bolt-on fenders (one included). Its dual crown design and new setup lines make installation clean and repeatable—ideal for racers and park riders alike. When we need speed, confidence, and control on big terrain, this is the fork we reach for.
Details
- Engineered for elite downhill mountain bike racing
- 200mm of DebonAir+ travel with ButterCups for big-hit control
- Charger 3 RC2 damper delivers external HSC, LSC, and rebound tuning
- 38mm stanchions and dual crown design increase steering precision
- Ultra-low-friction SKF seals and Maxima Plush fluids boost performance
- Compatible with 29in wheels and post mount disc brakes
- Includes RockShox bolt-on fender and setup markings on crown
- Available in 48mm or 52mm offset to match handling preference
- Item #RSXB07E
- Travel
- 200mm
- Stanchion Material
- aluminum
- Lower Material
- magnesium
- Crown Material
- aluminum
- Wheel Size
- 29in
- Steer Tube Diameter
- 1-1/8in
- Stanchion Diameter
- 38mm
- Rake
- 48mm, 52mm
- Spring Type
- DebonAir+ Twin Tube Air Spring, ButterCups
- Damper
- Charger 3 RC2, ButterCups
- Adjustability
- high, low, rebound
- Axle
- 20x110mm BOOST™
- Brake Compatibility
- post mount
- Rotor Compatibility
- 200mm+
- Includes
- RockShox Bolt-On Fender
- Claimed Weight
- 6lb 5.6oz (2880g)
- Manufacturer Warranty
- 2 years
- Activity
- downhill
- Manufacturer Part Number
- 00.4020.955.000, 00.4020.955.001
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Cancer - P65Warnings.ca.gov