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PSi is based in the Motorsports Industrial Park at Sonoma Raceway, (Sears Point) in Sonoma, California. We specialize in Racing Shock Absorbers, Springs, Clutches and Gearboxes. We are a Factory Authorized Sales and Service Agency for all ZF-Sachs shocks and clutches, Koni, Ohlins, Penske, Moton, Bilstein Racing & JRZ shocks. International Orders Information




Your IP Address is: 54.197.130.16
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Koni Racing, Ohlins Racing, Eibach Springs, Moton, Penske Racing Shocks, ZF Sachs, Hyperco, AST, JRZ, MCS and PSi are Powered by Zen Cart!
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