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RockShox BoXXer Ultimate D1 Suspension Fork, 29'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 52mm, Red
RockShox BoXXer Ultimate D1 Suspension Fork, 29'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 48mm, Red
RockShox BoXXer Ultimate D1 Suspension Fork, 27.5'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 48mm, Red
RockShox BoXXer Ultimate D1 Suspension Fork, 27.5'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 44mm, Red
RockShox BoXXer Ultimate D1 Suspension Fork, 29'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 52mm, Black
RockShox BoXXer Ultimate D1 Suspension Fork, 29'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 48mm, Black
RockShox BoXXer Ultimate D1 Suspension Fork, 27.5'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 48mm, Black
RockShox BoXXer Ultimate D1 Suspension Fork, 27.5'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 44mm, Black
RockShox BoXXer Ultimate D1 Suspension Fork, 29'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 52mm, Red
RockShox BoXXer Ultimate D1 Suspension Fork, 29'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 48mm, Red
RockShox BoXXer Ultimate D1 Suspension Fork, 27.5'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 48mm, Red
RockShox BoXXer Ultimate D1 Suspension Fork, 27.5'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 44mm, Red
RockShox BoXXer Ultimate D1 Suspension Fork, 29'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 52mm, Black
RockShox BoXXer Ultimate D1 Suspension Fork, 29'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 48mm, Black
RockShox BoXXer Ultimate D1 Suspension Fork, 27.5'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 48mm, Black
RockShox BoXXer Ultimate D1 Suspension Fork, 27.5'', DebonAir+ W/ButterCups, 200mm, 1-1/8'', 20x110mm Boost TA, Rake: 44mm, Black
RockShox

RockShox BoXXer Ultimate D1 Suspension Fork

In stock
SKU: 00.4020.955.000
$1,899.00
Variant

Introducing the RockShox BoXXer Ultimate D1 Suspension Fork, the ultimate choice for downhill mountain bikers who demand the best in control, stability, and suspension performance. This all-new 38mm chassis is equipped with the DebonAir+ twin tube air spring, delivering a coil-like feel with unmatched small bump sensitivity, added support throughout the travel, and a higher ride height for confidence on steep descents. Perfect for tackling the toughest terrain, the BoXXer Ultimate D1 provides a race-ready performance upgrade, ensuring you conquer every trail with ease and precision.

  • All-new 38mm chassis equipped with the DebonAir+ twin tube air spring that feels like a coil
  • DebonAir+ twin tube air spring balances small bump sensitivity, support throughout travel, and taller ride height
  • NEW Signature colorway BoXXer Electric Red with all-new graphics package
  • Premium fender compatibility (RockShox Bolt-On Fender included)
  • Short and tall crown options to fit different head tube lengths
  • Charger 3 damper tuned for BoXXer's updated chassis and spring
  • Features High Speed Compression, Low Speed Compression, and revamped Low Speed Rebound
  • ButterCups block 20% of high-frequency trail chatter to reduce hand and arm fatigue
  • SRAM Model ID: FS-BXR-ULT-D1
Attributes
Axle/Hub spacing 20x110mm Boost TA
Brake Type Disc
Crown Material Aluminum
Damping Charger 3 RC2 W/ButterCups
Damping Adjustments External begin stroke rebnd, low speed comp, high speed comp
e-Bike approved Yes
Lower Tubes Material Magnesium
Maximum Rotor Size 220mm
Maximum Tire Width 81mm
Spring Adjustments Air pressure, Bottomless tokens
Spring Type DebonAir+ W/ButterCups
Stanchions Diameter 38mm
Stanchions Material Aluminum
Steerer Tube 1-1/8''
Steerer Tube Material Aluminum
Travel 200mm

About the Brand

  • RockShox was founded by Paul Turner in 1989 in Asheville, North Carolina, and later moved to California after Steve and Deborah Simons joined as partners. Turner, with a background in motocross and suspension design, collaborated with Simons, an experienced suspension innovator, to develop the first suspension forks for mountain bikes. The RS-1, RockShox’s first fork, was introduced in 1990, with professional rider Greg Herbold helping to establish its reputation. The company saw rapid growth, going public in 1996 with a dominant market share. However, increasing competition and financial challenges led to production shifts and cost-cutting measures. By 2002, RockShox defaulted on a loan, leading to its acquisition by SRAM, which relocated manufacturing to Taiwan while maintaining a test facility in Colorado Springs

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