The Pete and Jakes Viper Coilover Shocks are the first in a series of new, high-performance suspension products designed exclusively for hot rods and pro street machines. These shocks combine advanced gas-charged technology with high-quality billet construction and precision valving for superior, fade-free damping. Key Performance and Construction Features: Hot Rod Exclusive Design: The first shock absorber engineered specifically for the unique demands of hot rods and pro street vehicles. Billet Aluminum Construction: Made from super strong 6061T-6 aluminum alloy, making it the first affordable all-billet shock absorber on the market. Gas Charged: Provides superior, fade-free damping and consistent operation under demanding conditions. Advanced Damping: Features a six-stage automatic damping function that continuously adjusts to load and velocity factors for proper damping. A special anti-topping function is also built in. 11-Position Adjuster: Includes an 11-position damping adjuster knob, allowing you to easily fine-tune the ride quality you desire. Double Wall Body: Protects the inner cylinder from damage due to dents, ensuring damping consistency by preserving piston/body compatibility. Leak Protection: A special vented oil cavity protects the top seal from excessive pressure, solving the common problem of leaking shocks. Premium Bushings: Equipped with Pete & Jake’s Microflex® Bushings. Installation Note: Ride Angle The proper ride and handling characteristics are heavily determined by the shock's mounting angle: More Vertical: Results in a stiffer ride. Less Vertical: Results in a softer ride, but also provides less support during hard bumps and cornering. NOTE: Springs are NOT included with the purchase of the shock pair.