Proma Star double adjustable custom mount coil-over shock. Compressed height of 11-5/8", extended height of 16-7/8". Bushing 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.