Oil Boost Kits

    Chirco Performance offers these air cooled Sand Rail and Dune Buggy single and dual relief valve plunger kits, the single relief piston and spring were commonly used on early vintage and classic Volkswagens with a single relief engine, Volkswagen came out with the dual relief in 1971, this dual relief was an upgrade to the air cooled Volkswagen beetle engines oiling system, we also offer the oil relief piston plugs as well as custom adjustable oil pressure regulator plugs, that are commonly used on high performance air cooled Volkswagen Sand Rail and Dune Buggy engines

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