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BoXXer Ultimate

Name: BoXXer Ultimate
Brand: RockShox
SKU: FS-BXR-ULT-C2

Msrp

$1828

Model ID

FS-BXR-ULT-C2

Description

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More than 20 years ago, BoXXer changed the DH world when it hit the scene, featuring Charger™ 2.1 damper for unrivaled control between the tape. Ultra-low friction SKF wiper seals and race-proven Maxima Plush damping fluid all work overtime to reduce friction, noise, and provide lasting fork performance all the way to the finish corral.

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Features

Completely re-designed to reduce hand fatigue and fight unwanted friction, the new Charger™ 2.1 damper increases confidence and control over every trail
Charger™ 2.1 RC2 damper featuring independent high and low speed compression adjust
New ultra-low friction SKF wiper seals provide long lasting fork performance and improve overall suspension feel
New Maxima Plush damping fluid reduces friction and silences damper noise
New foil graphics
BoXXer Red Signature color option
Highly tunable DH-specific DebonAir™ spring offers a coil-like consistent feel throughout the travel

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Some variations of this product featured on this page are not available for purchase and are installed on bicycles as complete bikes only. See your dealer for details.

Technology

Bottomless Tokens

Bottomless Tokens allow you to easily custom tune your air-spring performance to best match your riding style and suspension preference. Adding the easy-to-install Bottomless Tokens changes the air-spring curve to resist bottom-out after a big hit, giving aggressive riders the power to attack the trail harder. Removing Bottomless Tokens makes the air-spring curve more linear, enhancing suspension feel for certain types of terrain or trail condition and ensuring riders who are less front-end aggressive benefit from 100% of their fork’s travel.

DebonAir

A lightweight, highly tune-able air spring designed to offer a coil-like consistent feel throughout the travel - effortlessly soaking up the smallest hits and tracking the slightest changes in the terrain.

Sag Gradients

Measurement gradients indicating the current sag and travel settings are conveniently located on the upper tubes so that you always know how much travel you are running. You won’t find this anywhere else but RockShox.

BOOST

BOOST is the standard wheel and drivetrain specification that opens the opportunity for improved frame geometry with shorter chain stays, wider and stiffer suspension pivots, wider range of chainring options, as well as more clearance for bigger tires and wider, stiffer wheels.

Charger 2.1 Damper

Completely re-designed to reduce hand fatigue and fight unwanted friction, the new Charger 2.1 increases confidence and control over every trail.

Maxima Plush Fluid

Developed with the world's fastest racers, on the world's toughest circuits. Maxima Plush Fluid is designed to protect from suspension wear, reduce friction, and silence damper noise while maintaining a consistent feel in all temperatures.

SKF Seals

Everyone loves a good collaboration, which is why we’ve been working with SKF, the world’s highest-performance seal manufacturer, for over 5 years. Together we’ll provide ultra-low friction wiper seals, less fatigue, and unmatched suspension feel, all while keeping the dirt where it belongs- because no one wants dirt in there.

Specifications

Wheel size	27.5", 29"
Travel (mm)	180mm, 190mm, 200mm
Steerer	1-1/8" Aluminum
Axle	20x110mm BOOST™
Spring	DebonAir
Fork offset	36mm (27.5"), 46mm (27.5"), 46mm (29"), 56mm (29")
Maximum Rotor Size	220mm
Upper tube type	35mm straight wall aluminum
Max Tire Width (mm)	81
Minimum Rotor Size	200mm
E-Bike Approved	E-bike Approved
Damper Type	Charger 2.1 RC2
Volume reducer	0/6 Tokens, 1/6 Tokens, 2 Tokens, 2/6 Tokens
Color (FS)	BoXXer Red, Gloss Black
Fender Compatibility	n/a
Weight (g)	2565
Weight Based On	27.5" BOOST, 200mm, Maxle Stealth, Short Crown