Yoshimura RS-4 Kawasaki Slip-On Exhaust

Yoshimura’s RS-4 Slip-On Exhaust System redefines what’s possible for Kawasaki riders seeking a perfect blend of power, refinement, and precision engineering. Engineered through collaboration with elite factory racing teams, this system combines cutting-edge design with real-world performance demands. Whether you’re tackling track days or daily commutes, it delivers unmatched responsiveness while keeping noise levels in check—a critical balance for riders who prioritize both speed and practicality.

Core Innovations:
– Pentagonal Sleeve Technology: Optimizes airflow for peak horsepower gains without sacrificing throttle response.
– Poly-resonant Front Chamber: The muffler cap acts as an acoustic chamber, reducing sound output by up to [X] dB compared to stock systems while maintaining aggressive exhaust tone.
– Two-Stage Stepped Baffle: Enhances torque across the RPM range by minimizing backpressure and maximizing flow efficiency.
– Carbon Fiber End-Cap: Lightweight yet rugged finish that adds aerodynamic flair while resisting corrosion and heat damage.
– Stainless Steel Tail-Pipe: Built to endure extreme temperatures and road conditions for lasting durability under high-performance use.

Why Choose Yoshimura?
Competitors often compromise on either noise reduction or power delivery—but not here. Unlike systems that prioritize raw sound suppression at the cost of performance (e.g., brand X’s single-chamber design), the RS-4 balances both through its stepped baffling and resonant chamber layout. Its centralized mass distribution also improves handling versus bulkier aftermarket options, making it ideal for track-focused riders.

Versatile & Ready for Any Challenge:
From optional spark arresters for trail riding compliance to Repack Kits for easy maintenance, this system adapts seamlessly to your needs. Proudly assembled in the USA using aerospace-grade materials, it’s built for those who demand reliability as much as they crave speed.

Whether you’re chasing lap times or upgrading your street bike’s presence, the RS-4 isn’t just an exhaust—it’s a statement of precision engineering for riders who refuse to settle.