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Big Gun EVO R Series top performance exhaust system is designed to meet the flexible needs of today’s aggressive racing enthusiast. Big Gun EVO R complete exhaust is created from 18 gauge milled steel pipe for maximum durability and power with an internal/external ceramic coating satin silver. CNC mandril bent 304 thin wall stainless steel header for exact fitment and precise air flow that yields extreme power with a smooth torque delivery. EVO R Series complete exhaust systems come complete with a USFS approved screen type spark arrestor making it authorized to ride in wooded areas. A 94-96 decibel Vortex quiet insert stainless steel is also included on the Big Gun EVO R systems to adhere to the most rigid sound restrictions. Showing style as well as performance and durability, the Big Gun EVO R exhaust has a billet aluminum outlet end cap with red oxidized removable tip. EVO R Series was developed with the most state of the art computer mapping power curve to produce the broadest power available in the industry today. Utilizing Race Tools hi-performance pillow silencer packing, the Big Gun EVO R exhaust is built for utmost performance.