Pro Circuit

Built for riders who want stronger performance and dependable durability, the Pro Circuit 304 Silencer is a perfect fit for the 1987-06 Yamaha YFZ350 Banshee. Its 6061 T6 brushed aluminum body,...

Give your 1988-06 Yamaha YFS200 Blaster a proven performance upgrade with the Pro Circuit 304 Silencer. Built with a brushed 6061 T6 aluminum body, stainless steel components and reinforced...

Protect your engine during washdowns with the Pro Circuit 4-Stroke Exhaust Plug. Made from durable silicone with a tapered design for a secure fit, this plug helps keep water, mud and debris out of...

Boost the performance of your 1986-89 Honda TRX250R with the Pro Circuit 304 Silencer, engineered for closed-course racing and built to last. Featuring a durable 6061 T6 brushed aluminum body with...