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Race-bred predictability meets park-ready performance in the BoXXer Select 27.5in Boost Fork
What Our Gearhead® Experts Are Saying:
"I recommend this to riders who want true downhill composure without jumping to the top trim. The LinearXL spring feels incredibly consistent through the travel, and the Charger 3.2 RC damper is simple to dial. It tracks well through chatter and stays supportive on big compressions."
When we’re lining up at the start gate or dropping into blown-out park laps, chaos costs speed. The BoXXer Select 27.5in Boost Fork from RockShox is built around one core principle—predictability—so we stay composed when the course pushes back.
At its heart is the all-new LinearXL air spring, delivering a position-sensitive linear curve that stays supple off the top and supportive through the mid-stroke. A jounce bottom-out bumper adds confidence when we land deep or charge into steep compressions. Paired with the Charger 3.2 RC damper, rebound and compression are intuitive and nearly silent, keeping focus on the track instead of the fork. The 38mm chassis provides precise steering control without harsh deflection, while SKF wiper seals and Maxima 920 oil reduce friction for consistent performance lap after lap. With Boost spacing and dedicated 27.5in geometry, this fork brings race-proven composure to aggressive downhill builds.
Details
- Downhill suspension fork for race and park riding
- Optimized for 27.5in wheels with Boost spacing
- LinearXL air spring with jounce bottom-out control
- Charger 3.2 RC damper with independent rebound
- 38mm chassis for precise steering stiffness
- Low-friction SKF seals and Maxima oil
- Item #RSXB0D2
- Travel
- 200mm
- Stanchion Material
- aluminum
- Lower Material
- magnesium
- Crown Material
- forged 6061 T-6 aluminum
- Wheel Size
- 27.5in
- Steer Tube Diameter
- 1-1/8in
- Stanchion Diameter
- 38mm
- Axle To Crown
- 586mm
- Rake
- 44mm, 48mm
- Spring Type
- LinearXL air spring
- Damper
- Charger 3.2 RC
- Adjustability
- rebound, low-speed compression
- Lockout
- no
- Axle
- Boost 20 x 110
- Brake Compatibility
- disc
- Rotor Compatibility
- 200–220mm
- Includes
- bolt-on fender, bottom-out tokens, short/tall crowns star nut, Maxle Stealth
- Claimed Weight
- 2849g
- Manufacturer Warranty
- 2 uears
- Activity
- downhill, enduro
- Manufacturer Part Number
- [44mm offset] 00.4021.276.001, [48mm offset] 00.4021.276.000