The Pro Circuit 304 Slip-On Silencer is a longer-body muffler designed to boost top-end performance while helping reduce overall noise. Built for durability with a 6061-T6 brushed aluminum canister and stainless steel inlet/end-cap.
Boost top-end performance while keeping noise under control. The Pro Circuit 304 Slip-On Silencer uses a slightly longer body to help improve high-RPM pull and reduce sound output compared to shorter designs. It’s a proven choice for riders who want a strong-running bike with a more manageable exhaust note.
Built to handle hard riding, the 304 features a 6061-T6 brushed aluminum silencer body with a stainless steel inlet tube and end-cap, plus TIG/MIG welding for long-term durability. When it’s time for maintenance, the Allen head screw construction makes repacking straightforward—helping extend the silencer’s service life and keep performance consistent.
