Bilstein AS2-R Series Suspension Shock Absorbers are designed for motorsports applications and provides premium performance through superior tuning and modular design. The package features an aluminum-bodied remote reservoir with tunable base valve technology and several adjustment options mated to Bilstein’s AS2 Series aluminum modular shock. The lightweight threaded body shock can be used with or without coilover hardware. Pistons piston bands and heims are sold separately to allow the greatest flexibility in upgrade combinations. The AS2-R Series Suspension Shock Absorbers offer racers a versatile damper that maximizes suspension travel and gives an endless range of options for tuning and upgradeability.