QA1 DD509 - Proma Star double adjustable custom mount coil-over shock. Compressed height of 11-5/8", extended height of 17". Bearing top and bushing bottom.
QA1's double adjustable shocks have 324 valving options, with 18 positions of compression adjustment and 18 positions of rebound adjustment. There are no jumps when adjusting between any two clicks. Each adjustment has been carefully defined to provide the ideal horse curve to maximize performance. Independent Compression and Rebound Adjustment, Coil-Over, Lightweight Aluminum, Ride Height Adjustable, Spring Mounting Hardware Included, 100% Dyno Tested and Serialized, Revalveable and Rebuildable by the QA1 Factory or QA1 Authorized Service Centers, American Made, Precision Machined Aluminum Piston with PTFE Piston Band, 5/8? Centerless Ground, Hard Chrome Plated, Solid Piston Rod, Three Step Sealing System.