Pro Circuit 304 Silencer Kawasaki KX500 1988-2003 SK88500-304

If you're running a KX500, exhaust flow directly impacts your power band—and the Pro Circuit 304 delivers measurable gains in high-RPM performance without sacrificing rideability. This silencer pairs real noise reduction with engineering that works, using time-tested materials and construction methods that hold up to aggressive riding. You get a cleaner, more refined machine that's still built tough enough for the trail.

The 304's extended chamber design keeps your engine breathing efficiently across the rev range, while the lightweight 6061 T6 aluminum construction keeps unsprung weight minimal. Stainless steel internals resist corrosion and heat cycling, and the TIG/MIG-welded seams won't fail when you need them most. Double-walled mounting brackets lock everything in place on rough terrain, and field-serviceable packing means you'll get years from this investment.

• Fitment: Kawasaki KX500 1988–2003
• Material: 6061 T6 aluminum
• Inlet tube: Stainless steel
• End cap: Stainless steel
• Welding: TIG and MIG
• Mounting: Double-walled brackets
• Maintenance: Allen head screws
• Installation: Bolt-on
• MPN: SK88500-304