The Hotchkis Tuned 1.5 Street Performance Series shock absorbers manufactured by Fox have been specifically tuned by Hotchkis ride engineers brining a smooth ride and exceptional control to your GM 78-88 G Body Grand National Monte Carlo and 64-72 A-Body Chevelle GTO. The Hotchkis 1.5 Street Performance Series shock absorbers feature the latest cutting edge mono tube shock technology in a lightweight smooth-bore Type III hard anodized aluminum body. The shocks feature smooth riding digressive disc technology a high-flow piston specially formulated oil and high pressure nitrogen for consistent performance under varying conditions and temperatures. Each shock is application tuned to offer superior ride comfort as well as vehicle control. For years of durability the 1.5 SPS shock features 1/2" hard chrome plated heat treated alloy shaft subjected to 100 hour salt spray testing. To prevent contaminants from entering the shock the rod guide employs a wiper/scraper dual seal which cleans the shaft before reaching the main seal. End caps are black anodized 6061-T6 billet aluminum and feature polyurethane bushings. CNC machined cross bars and vehicle specific mounting hardware makes these shocks a direct replacement for OE. Bolt a pair on today and feel the difference. Hotchkis Sport Suspension 71020009 Hotchkis Tuned 1.5 Street Performance Series aluminum mono tube rear shock for GM 78-88 G Body Grand National Monte Carlo and 64-72 A-Body Chevelle GTO offers a smooth ride and exceptional control. 1978-1988 GM G Body Grand National Regal Monte Carlo El Camino 1964-1972 GM A-Body Chevelle GTO El Camino Monte Carlo LeMans 1978-1988 GM G Body Grand National Regal Monte Carlo El Camino 1964-1972 GM A-Body Chevelle GTO El Camino Monte Carlo LeMans