Yamaha 2-stroke R304 Pro Circuit Performance Muffler

Unleash Your Yamaha 2-Stroke’s True Potential

Crafted for serious racers demanding peak performance, the Pro Circuit R304 Shorty Silencer transforms your closed-course Yamaha machine. This precision-engineered exhaust isn’t just lightweight—it’s a powerhouse upgrade engineered to maximize horsepower and throttle response where every millisecond counts.

Why Racers Choose the R304 Shorty:
– Track-Optimized Design: The compact brushed aluminum body (6061-T6 grade) reduces weight while enhancing exhaust flow for explosive acceleration out of corners.
– Built for the Long Haul: Featuring a corrosion-resistant 304 stainless steel intake tube and dual-wall mounting brackets, reinforced with TIG/MIG welding to withstand brutal motocross or enduro conditions.
– Maintenance Made Simple: Allen-head screws allow track-side repacking in minutes—no special tools needed. Combined with long-lasting E-Glass packing, enjoy extended service life between races.
– Proven Durability: Stainless steel end-cap resists impact damage, ensuring consistent performance season after season.

Ideal for motocross, supercross, or hare scrambles riders seeking an edge, this USA-made silencer delivers unmatched acoustics and reliability. Transform your YZ125 or YZ250 into a podium contender—engineered exclusively for closed-course domination.

(Note: Not designed for street-legal applications.)