50 Series - Replaceable Bearing, QA1 Curve, Racer RevalveableRacer Revalveable & RebuildableHave 10 minutes? That's all it takes. Easy-to-follow instructions can give you the performance edge. Premium Aluminum PistonIncorporates dual bleed circuits for standard or custom valvings, including extreme split valvaings. 15mm Centerless Ground, Hard Chrome Plated, Solid Piston RodPrecision surface, eliminates piston rod flex, increasing valving consistency. Deflective Disc ValvingProvides consistency in production and performance throughout entire velocity range. Twin Tube DesignThe outer tube can get dented without binding the shock. Can Be Run Upside DownCan be mounted upside down with no change in rate to reduce unsprung weight. 2" O. D. Steel Body Replaceable 1/2" I. D. Bearing 100% Dyno Tested and SerializedPit Stop USA offers QA1 50 Series Steel Replaceable Bearing Shock - 7" Stroke - 3 Compression, 3 Rebound Valving 5173 at low everyday prices. Be sure to check out all of our products from QA1 Precision Products including QA1 Precision Products QA1 50 Series Steel Replaceable Bearing Shocks.