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Spec IV Exhaust
Spec IV uses the same basic principle as used in all racing spec muffler: straight, light weight and efficient exhaust flow. The racing spec IV muffled has however an additional built in silencer, making quieter then the the Spec III and and Pro Spec muffler. designed with an additional guaranty and sound arresting of exhaust flux use with the street new with the adoption of the super silent structure which is developed in prerequisite, is contrary in the higher-order origin, the inner silencer- not to be install, and also clears safety standards volume, actualizing the wide power band from the medium speed limits to the high-speed limits.
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