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Rockshox BoXXer B1-B2 (RC & WC) 2015-19

The B1/B2 Boxxer used the 35 mm chassis of the previous A1-A2 versions but was the first with the Charger damper.  The base model RC still came with a basic Motion Control damper.  This version did not fit 29" wheels and race teams with 29" wheels ran hybrid forks with Lyrik lower legs.
BoXXer


Fork Details & Identification:


Brand


Rockshox


Stanchions


35 mm aluminum,
Black anodised


Model


RC with Moco & coil spring
World Cup with Charger RC damper & air spring


Crown & Uppers


Aluminium


Release
Year/s


2015-2018


Decals


Various


Damper


RC - Motion Control compression with one way rebound piston.  Adjustable LSR & compression.

WC - Charger damper with shim stacks.  Adjustable LSR & LSC


Wheel Size


26" & 27"

Spring


RC - Coil spring. 
Red = medium,
Yellow = soft,
Blue = firm.

WC - Air with negative set by internal valve at top-out


Configurations
& Travel



26 & 27" 200 mm


Fitment
Options





Stem


Conventional or Direct Mount Stem
4x M6 bolts on 30 x 50 mm square pattern


Updates
Since
2015


Mostly cosmetic


Upgrade
Compatibility


Charger damper can be fitted to Motion Control forks.
Charger Damper can be tuned and modified for better performance.

Air forks can be converted to coil, but not vice versa due to coils scratching the insides.



Upgrades:

Make your BoXXer even better with these upgrades.  Purchase either with a Shockcraft service or for DIY installation.  Pricing is provided at links below.


Charger
Damper



Replace the low performance and untunable Motion Control damper with a Charger Damper which can be tuned for good performance at almost any rider weight and aggression level


Damper Tune
(Unharsh
Modification
& Matrix Tune)



Tuning the BoXXer Charger Damper to your weight, terrain and aggression level.
Learn More
 
Negative
Air
Upgrade


Higher volume negative air upgrades for World Cup forks with solo-air system.  Gives better small bump compliance and better mid-stroke support without the weight of coil.



Fluids:


Stock


RC- Rockshox/Maxima 5 wt fork oil in damper - 290cc volume
WC - Rockshox/Maxima 3 wt fork oil in damper - bleed full.
WC - Grease in air-spring.
Rockshox/Maxima 0W30 Semibath Spring side bath - 20 cc
Rockshox/Maxima 0W30 Semibath Damper side bath - 10 cc


Shockcraft Recommended


RC - Motorex 2.5 wt fork oil in MoCo damper.  290cc volume
WC - Hot Oil Green in Charger Damper for quiet operation.
WC - Hot Oil Pink in Charger Damper for highest performance.
Motorex Supergliss 10 cc damper side bath oil & 20cc spring side.
Slickoleum - air piston & seals