RockShox BoXXer Ultimate Charger 3.2 is a race-developed 29" downhill suspension fork built for riders who want consistent composure at speed—less deflection, more traction, and more predictable control when tracks get rough. The LinearXL air spring is tuned to feel notably coil-like off the top while staying supportive through the mid-stroke, with a jounce bottom-out bumper to manage hard compressions without harsh surprises. Paired with the Charger 3.2 damper and ButterCups, it prioritizes reduced vibration and clear, repeatable setup—especially valuable for bike park laps and race runs where small changes matter.
Key performance details for fast, repeatable setup
LinearXL Air Spring - Delivers a supple initial stroke with strong mid-stroke support for predictable speed and grip on steep, high-load hits
Jounce Bottom-Out Bumper - Adds controlled end-stroke support to help prevent harsh bottom-outs on big landings and compressions
Charger 3.2 Damper (HSC/LSC) - High- and low-speed compression controls make it easier to dial in support versus sensitivity without guesswork
ButterCups Vibration Isolation - Targets high-frequency trail chatter to reduce hand and arm fatigue over long, rough descents
ButterWagonTech + Maxima 920 (15w) - Maintains consistent bushing lubrication to reduce friction and keep the fork moving smoothly through the service interval
29" / 52mm Offset + Fender Ready - Optimized for modern 29er downhill handling, with bolt-on fender compatibility for front and rear coverage (fender sold separately)
Specifications & Identifiers
Axle to Crown
605
Brake Type
Post Mount 200
Color
Electric Red, Gloss Black
Crown Race
30mm
Defined Color
Black, Red
Designed for ebike
Yes
External Adjustments
High Speed Compression Damping, Low Speed Compression Damping, Rebound Damping
Fork Rake
52mm
Front Axle Type
20mm Thru x 110mm
Front Hub Spacing
110mm
Lockout
No
Maximum Tire Width
81mm
Negative Spring
Air
Offset
52mm
S.H.I.S. Stem Clamp
28.6 Threadless
S.H.I.S. Stem Clamp Diameter
28.6
Spring
Air
Steerer Tube
Straight
Steerer Tube Length
268mm
Travel (mm)
200mm
Wheel Size
29er
Electric Red - 200mm UPC
710845927041
Electric Red - 200mm MPN
00.4021.277.004
Gloss Black - 200mm UPC
710845927058
Gloss Black - 200mm MPN
00.4021.277.005
Tree Fort ID:
333222476021
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