55 Series - Chrome Plated, Replaceable Bearing(Previously Carrera Shocks 31 Series) 1 3/8" PistonMachined and processed per individual valve code specification. 9/16" Hard Chrome Plated, Polished Piston Rod Twin Tube DesignThe outer tube can get dented without binding the shock. 2" O. D. Chrome Plated Steel Body Can Be Run Upside DownCan be mounted upside down with no change in rate to reduce unsprung weight. Replaceable 1/2" I. D. Bearing. Notes: Compressed and extended lengths will vary slightly with addition of bump stop and position of screw on eye ring. Be certain to check compressed and extended lengths carefully for proper fit. QA1's lengths do not necessarily correspond to competitor's lengths.Pit Stop USA offers QA1 55 Series Steel Replaceable Bearing Shock - 7" Stroke - 9 Comrpession, 1 Rebound Valving 5579-1 at low everyday prices. Be sure to check out all of our products from QA1 Precision Products including QA1 55 Series Steel Replaceable Bearing Shocks.