The BC ER Series Coilover Suspension Kit features 30 levels of separate rebound and compression damping force adjustment, full-length height adjustment allowing extremely low ride height, and external reservoirs. The BC ER Series Coilover has been especially designed and developed to meet the demands of the serious driver for professional competition use. Its external reservoirs allow more oil to be contained than a conventional coilover, to slow down oil temperature increase. The separate compression adjustment provides a wider range of tuning settings than a traditional coilover, in which only slight changes occur to compression when adjusting the rebound. The BC ER Series Coilover offers complete adjustment for the individual that demands serious performance and wants to fine tune their suspension setup to their needs BC ER Series Coilover Standard Features: - Front External Reservoir - Front Pillowball Top Mount (Camber Adjustable Where Applicable) - Rear External Reservoir - Rear Pillowball Top Mount (Camber Adjustable Where Applicable) - Twin Piston Design - Separate Compression & Rebound Adjustment - 30 Level Damping Force Adjustment - Full-Length Height Adjustment - Anodized Alloy Casing - CNC Machined - T6061 Alloy Locking Ring - Monotube Design For Maximum Performance - Fully Rebuildable - 12 Month Warranty