Repair a bent or damaged stanchion on your RockShox BoXXer with this genuine replacement CSU (Crown-Steerer Unit) upper tube — left side. Designed for BoXXer C1 and C2 forks from 2019–2023, this taper wall tube restores factory tolerances for correct bushing fit and smooth fork action.

  • Genuine RockShox left-side CSU upper tube for BoXXer C1-C2 (2019–2023)
  • Taper wall construction
  • Black finish
  • OEM tolerances ensure correct bushing and seal fit

Stanchion damage from crashes or rock strikes doesn't have to mean a new fork. Replacing individual upper tubes is a cost-effective way to rebuild a BoXXer to factory specification using genuine RockShox components.

Compatible with RockShox BoXXer C1 and C2 (2019–2023). Left side upper tube. Sold individually — the right tube is available separately (PSI-RX114018093000).

RockShox covers this product with a 2-year warranty against manufacturing defects. Warranty claims for this product should be directed to Tune Cycles. Return the item to us with proof of purchase and we will manage the warranty process with the brand on your behalf.
  • Genuine RockShox left-side CSU upper tube for BoXXer C1 and C2 forks (2019–2023)
  • Taper wall construction for an optimised strength-to-weight balance
  • Black finish to match the BoXXer's factory appearance
  • Exact OEM replacement — maintains factory tolerances for correct bushing and seal fit
  • Essential for fork rebuild following stanchion damage
SpecificationValue
Compatible ForkRockShox BoXXer C1-C2 (2019–2023)
SideLeft
ConstructionTaper wall
FinishBlack
SKU PSI-RX114018093001
Model # 114.018.093.001
Barcode # 710845821189
Brand RockShox