British Customs Predator Exhaust is manufactured from 14 gauge stainless steel, giving the exhaust a deep throaty note. A mechanical louver baffle ensures proper back pressure without obstructing exhaust flow. All welds are grounded off and each pipe is polished to a chrome like finish. British Customs exhausts are miles above the competition in style, function and performance. The kit has been developed as performance upgrade, check with local regulations prior to purchasing and installing this part. These exhausts have been fully tested on 2008 EFI bikes.