Custom Tuning included (worth £85)

Please Note: We are unable to supply these forks for Sur-Ron Electric Motorcycles. We have yet to assess them for tuning data and don't currently have it planned.

We offer a calculated tuning service – using endless data acquired from hours of testing and data logging, we can make calculated and informed decisions on what settings, re-valving and modifications are suitable for you. Your suspension will be thoroughly tested with our dyno facilities and tailored to you and your riding style.
Find Custom Tuning Information Here

Key Features

• NEW 38mm chassis designed to meet the needs of the world’s fastest racers with balanced stiffness and ride quality.
• NEW DebonAir+ twin tube air spring strikes the perfect balance between butter-smooth small bump feel, added support throughout the travel, and taller ride height for confidence when things get steep.
• NEW Signature colorway BoXXer Electric Red with an all-new graphics package.
• NEW RockShox premium fender compatibility (RockShox Bolt-On Fender included with purchase).
• NEW Lightweight machined and anodized crown for premium looks and durability.
• NEW Crown height gradient creates a visual guide to simplify setup, no ruler required.
• Charger 3 damper tuned for BoXXer’s updated chassis and spring.
• Featuring High Speed Compression, Low Speed Compression, and a revamped Low Speed Rebound, every click is meaningful and exact. This allows the rider to tune to perfection with every click.
• ButterCups block 20% of high-frequency “trail chatter” to reduce hand and arm fatigue, leaving you feeling fresh with more control.
• Ultra-low-friction SKF wiper seals provide long-lasting fork performance and improve overall suspension feel.
• Maxima Plush damping fluid reduces friction and silences damper noise.
• Maxima Plush Dynamic Suspension Lube reduces friction, lasts longer, and enhances suspension performance ride after ride

Redesigned by the world’s fastest racers, for the world’s fastest racers, you want BoXXer in your corner. The all-new 38mm chassis is equipped with the DebonAir+ twin tube air spring that will have you thinking it’s a coil. Paired with a Charger 3 damper tuned for downhill speed, BoXXer Ultimate takes you straight to the top step of the podium.

Specification

Model designator (SF): Ultimate.
Wheel size: 27.5" & 29".
Travel (mm): 180,190,200mm (Replacement Airshaft Required).
Damper Type: Charger 3 RC2 W/ButterCups.
Fork offset: 48mm & 44mm (27.5"), 48mm & 52mm (29").
Maxle included: Maxle Stealth.
Colour (FS): BoXXer Electric Red - Gloss and  Gloss Black.
E-Bike Approved: E-bike Approved.
Steerer: 1-1/8" Aluminium.
Axle: 20x110mm BOOST™.
Axle to Crown height (mm): 586.
Brake type (FD): Disc.
Crown Material: Forged, 6061 T-6 aluminium, direct mount stem compatible.
Upper crown type: Short/Tall.
Lower leg type: Magnesium.
Upper Tube Finish: Fast Black.
Upper tube type: 38mm aluminium.
Damper adjust: Crown.
Damping adjustments: Extl begin stroke rebound, low speed comp, high speed comp.
Volume reducer: 0/6 Tokens.
Spring: DebonAir+ W/ButterCups .
Spring rate: n/a
Max Tire Diameter (mm): 732.
Max Tire Width (mm): 81.
Maximum Rotor Size: 220mm.
Minimum Rotor Size: 200mm.
Fender Compatibility: Bolt On.
Short Crown OD (mm): 42.

User Manual
Service Pricing
Service kits
Volume Spacers

Service Intervals

Action	Interval
Clean and Lubricate	Every Ride
Inspect for scratches to stanchions, dents and other signs of wear	Every Ride
Check headset, axle and brake torque	Every Ride
Oil Bath Replacement	50hrs use
Wiper Seal Replacement	50hrs use
Full Service	Every 100hrs of use / 12 months whichever comes first.