Pro Shocks "A" Series Aluminum Smooth Body Shock 9" Stroke 6 Compression, 6 Rebound Fuel Pickup Reservoir The washers are precision stamped EQ TCC294A The washers are precision stamped from copper for perfect sealing and heat transfer Works well with 5 speed or 2500+ stall PRO Shocks has maintained this quality for over 30 years because the company attracts race oriented professionals who come to the job with as much passion as our customers bring to their cars The proven performance that makes PRO Shocks suspension systems famous for quality comes from a precision manufacturing environment that holds the most stringent tolerances during assembly and through to the dyno process