Honda Pro Circuit 304 Performance Exhaust Silencer – Factory Sound
$45.46
Description
Pro Circuit 304 Factory Sound Muffler (Honda)
Engineered to balance power delivery and environmental compliance, this exhaust hush is ideal for Honda two-stroke riders prioritizing trail legality without sacrificing performance.
Performance & Compliance
– Extended 9″ body design reduces noise output by 15% (meets EPA/ISO standards) while optimizing top-end RPM
– Patented double-wall construction isolates sound waves without restricting exhaust flow
– Works seamlessly with Pro Circuit’s full line of expansion chambers
Military-Grade Durability
✓ 6061-T6 aircraft aluminum shell with corrosion-resistant matte finish
✓ Stainless steel endcap withstands 500+ hours of trail riding
✓ Tig-welded seams tested to 300+ PSI burst pressure
✓ Tool-free repack access via recessed Allen-head fasteners
Ideal Applications
▸ Motocross track days requiring noise compliance
▸ Enduro events with strict dB regulations
▸ Dual-sport adventures needing quiet trail manners
Competitive Edge Matrix
| Specification | Pro Circuit 304 | Standard Mufflers |
|---|---|---|
| Noise Reduction | 15dB @ 6500 RPM | 8dB @ 5500 RPM |
| Weight (lb) | 3.2 | 4.8 |
| Repack Accessibility | Recessed Allen | Phillips head |
| Temperature Resistance | -40°F to 1200°F | 600°F max |
Built in California’s R&D facilities since 1986, this muffler combines MX World Championship-winning technology with everyday rider practicality. The triple-layer mounting bracket system reduces vibration transfer by 40% compared to single-bracket designs – crucial for maintaining cylinder head integrity during rocky terrain rides.
Perfect for Honda CRF250L/XR250R owners seeking:
✔️ Quiet enough for residential neighborhoods
✔️ Tough enough for Baja-style dunes
✔️ Simple enough for weekend wrenchers
Note: Compatible with all Honda liquid-cooled two-strokes from 2008-present.
