SRAM BOXXER TEAM 2015 Service Manual page 23

Place a 21 mm open end wrench on the wrench flats on the
10
rebound damper seal head. Place another 21 mm open end wrench
on the wrench flats on the cartridge tube.
Holding the cartridge tube in place, turn the rebound damper seal
head counter-clockwise to loosen and remove the rebound shaft
and piston assembly.
21 mm 21 mm
Remove the cartridge tube from the bicycle stand and pour the
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fluid into an oil pan.
12 Remove the rebound damper seal head from the rebound damper
shaft.
Charger Damper Removal 23