Sprint Performance Lowering Springs 00-05 Toyota Celica - P/N: 8005 Product Model: SPR-8005 Drop Height - (Front/Rear) 2.00"/2.00" Sprint Springs are manufactured here in the United States or Canada. Sprint springs are cold wound with SAE 9254 chrome silicon material. Sprint Springs have over 30 years of engineering behind them to produce the best springs available for your vehicle. Springs: The springs support the weight of the chassis, including passengers and load. The spring functions as a cushion over irregular surfaces on the road. Springs also help control the brake dive, rear squatting, and body roll of a vehicle. Sprint Rate: Spring rate or spring stiffness influence the handling characteristics of the vehicles chassis. Sprint springs are designed for the best ride quality for its ride height. Sprint Springs are normally 20-25% stiffer than factory stock springs.