RockShox: 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.FEATURESNEW 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 Titanium crown bolts to make BoXXer Ultimate even more premium.NEW Lightweight machined and anodized crown for premium looks and durability.Short and tall crown options available to accommodate different head tube lengths.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. SPECIFICATIONSModel designator (SF): UltimateWheel size: 27.5Travel (mm): 200mmDamper Type: Charger 3 RC2 W/ButterCupsFork offset: 48mm & 44mm (27.5)Maxle included: Maxle StealthColor (FS): BoXXer Electric Red - Gloss, Gloss BlackE-Bike Approved: E-bike ApprovedSteerer: 1-1/8 AluminumAxle: 20x110mm BOOST™Axle to Crown (mm): 586Brake type (FD): DiscCrown Material: Forged, 6061 T-6 aluminum, direct mount stem compatibleUpper crown type: Short/TallLower leg type: MagnesiumUpper Tube Finish: Fast BlackUpper tube type: 38mm aluminumDamper adjust: CrownDamping adjustments: Extl begin stroke rebnd, low speed comp, high speed compVolume reducer: 0/6 TokensSpring: DebonAir+ W/ButterCupsSpring rate: n/aMax Tire Diameter (mm): 732Max Tire Width (mm): 81Maximum Rotor Size: 220mmMinimum Rotor Size: 200mmFender Compatibility: Bolt On - ShortCrown OD (mm): 42