Pro Circuit Throttle Tube Suzuki RMZ 250/450 07-.. Yamaha YZ 250/450 F 14-..

Pro Circuit Products & Racing, a company of U.S. origin, started in 1978 with polishing and cleaning cylinders and it was not until years later when it began manufacturing exhaust pipes.
Pro Circuit's current product range includes complete 2-stroke and 4-stroke systems, 2-stroke exhaust pipes, 2-stroke and 4-stroke silencers, 4-stroke exhaust headers as well as other accessories for the exhaust system.
Replace your off-road bike's exhaust system economically with GreenlandMX. We offer 2-stroke and 4-stroke exhaust systems, silencers and exhaust headers for KTM, Husqvarna, Honda, Kawasaki and Yamaha.