Yoshimura RS-4 Performance Slip-On Exhaust for Gas Gas

Yoshimura RS-4 Slip-On Exhaust System for Gas Gas: Engineered for Dominance
For riders seeking an edge on the track or trail, Yoshimura’s RS-4 Slip-On Exhaust System delivers unmatched performance gains paired with refined sound control—all backed by decades of factory racing expertise. Developed in collaboration with top-tier competition teams, this exhaust system redefines what’s possible for Gas Gas models by combining advanced engineering with rider-centric design principles.

Key Innovations at Work
The RS-4’s pentagonal-shaped sleeve ensures optimal gas flow while centralizing mass for improved handling and agility. Its front resonator chamber doubles as a poly-resonant noise suppressor, reducing decibel levels without compromising power output. A two-stage stepped baffle further refines sound characteristics while maintaining responsive throttle feedback critical for competitive riding. The sleek carbon fiber end-cap not only enhances aesthetics but also contributes to lightweight durability, while the premium stainless steel tailpipe guarantees corrosion resistance even under extreme conditions.

Why Choose Yoshimura?
| Feature | Yoshimura RS-4 | Competitor Products |
|—————————|———————————————|———————————–|
| Performance Boost | 10+ HP increase validated by dyno testing | Minimal or inconsistent gains |
| Noise Reduction | Meets strict competition sound regulations | Often exceeds legal decibel limits|
| Weight Distribution | Centralized mass for precise cornering | Offsets bike balance |
| Customization Options | Adjustable repack kits & spark arresters | Limited tuning flexibility |
| Build Quality | USA-manufactured aerospace-grade materials | Overseas production with lower tolerances |

Designed for racers who demand both power and compliance, this system excels in environments where decibel restrictions apply—perfect for track days or sanctioned competitions—while still delivering aggressive yet controlled tone on open terrain. The modular design allows easy tuning via optional baffles and spark arresters to adapt to varying riding conditions or event requirements.

Whether you’re chasing lap times on a motocross course or navigating technical trails, the RS-4’s lightweight construction and efficient airflow translate to smoother acceleration and enhanced bike stability. Built to endure punishing use yet remain street legal in most regions, this exhaust system is as much about practicality as it is about performance dominance.

Proudly engineered and assembled in the USA using aerospace-grade materials, Yoshimura’s RS-4 Slip-On isn’t just an upgrade—it’s a competitive weapon for serious riders who refuse to settle.