Hyper-Street II coilover suspension upgrade features mono-tube shocks with 32 clicks rebound settings and full length adjustable. Mono-tube shocks provides larger capacity for gas and oil to improve comfortable level of typical lowering vehicle. Special 32 clicks of valving allows user to fine tune rebound force settings. Independent spring tension and full length adjustable allows drop without sacrifice comfort by shorten pitch distance. *Godspeed / Rev9 provides 6 months warranty on their parts and 1 year warranty on all coilovers kit by Godspeed, However the item must be installed by a professional in order to qualify for warranty replacement against defects, a receipt from the shop or copy of a ASE license of the mechanic or a copy of the business license can all be accepted, please co.