Ridetech 55-57 Ford Thunderbird HQ Series ShockWaves Rear Pair Ridetech Sale! from 97000 /per Qty. Add to Cart This item is either made to order or has limited inventory. Please reach out to confirm lead times if needed. Rear HQ Shockwaves for 1955-1957 Thunderbird. Includes a pair of rebound adjustable Shockwaves with 1/4" airline fittings.This Part Fits: Year Make Model Submodel 1955-1957 Ford Thunderbird Base