The Pro Circuit R-304 is a compact, full-race 2-stroke slip-on silencer built for maximum performance on closed-course tracks. Its short 6061-T6 aluminum canister and durable stainless intake components deliver strong gains with a tough, serviceable design.
Unlock race-level 2-stroke performance with the Pro Circuit R-304 Silencer. Designed as a compact, short-can slip-on, the R-304 targets maximum performance gains where it matters most—on the track. Built with a brushed 6061-T6 aluminum muffler body and a 304 stainless steel intake tube, it’s engineered for strength, durability and consistent output over hard motos.
If your current silencer feels tired, loud or down on performance, the R-304’s service-friendly construction makes maintenance simple. Hex-head screws allow fast disassembly for quick re-packing, helping you keep sound control and performance consistent ride after ride. Note: this is a closed-course racing product.
