BC Racing Coilovers HM 99-02 Silvia 240SX (D-27-HM)The BC Racing HM Series Coilover System gets its great qualities from a combination of two previous BC Racing Coilover Systems the RM Series and ER Series. The HM Series uses an inverted mono tube damper, just like the RM Series, but adds the independent compression and rebound adjustment of the ER Series. Highly Customizable Swift Springs Come Standard On HM Series Coilovers Inverted Mono Tube Damper Linear Twin Piston Design Height Adjustment

the shock bodies are threaded along their length to fit spring preload adjustment collars and the internally threaded lower shock mount and collar

Testing with the California Air Resources Board

Helps reduce carbon build-up on intake valves

a pull-down design means the belt tightens by pulling the belt's "tail" downward away from the latch

This unit utilizes heavy duty 6" flex tubes with internal interlock liners

Boost control – The factory boost solenoid wiring on CA18DET S13 and SR20DET S14 models may be used

Please note this product does NOT fit AWD and Convertible Infiniti models

Cold Rolled

Black anodized for a durable finish

Our SPL Parts PRO Front Endlinks (FE) for the 2020+ Toyota Supra and 2019+ BMW Z4 chassis feature massive Teflon lined FK 1/2" bearings to provide the highest load capacity for use with stiffer aftermarket sway bars

Filter and can are fully serviceable

as shown in the below picture