




Yoshimura
Yoshimura RS-4S Full Stainless Steel Exhaust System for '12-'16 Kawasaki Ninja 650/ER-6n
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Yoshimura RS-4S Full Stainless Steel Exhaust System for '12-'16 Kawasaki Ninja 650/ER-6n
The Ninja 650 is a unique and versatile machine. We took the opportunity to create a system that would not only improve performance, but also enhance characteristics inherit in the original engineering, i.e. centralized mass and low-center of gravity. We were able to achieve this through use of our RS-4 Muffler mated to a Full System, giving Ninja 650 owners the ultimate in Yoshimura power.
Yoshimura Full System includes stainless steel RS-4 muffler with turn-out carbon fiber end-cap, low-volume insert, stainless steel header and tail-pipe, installation hardware, and step-by-step instructions.
Returns & Exchanges
If you are not completely satisfied with your purchase, you may return the item within 30 business days of receipt. While we offer a hassle-free return policy, some non-defective items may be subject to a 15% restocking fee.
Returned items must be:
- New and unused
- In original condition
- In the manufacturer’s original packaging
- Include all tags
Returns due to manufacturer defects will be accepted only if the customer provides photographic evidence showing the issue was not caused by misuse.
Non-Returnable Items
- Electrical components
- Special or made-to-order items
- Windscreens
- Bodywork
- Carbon fiber parts
- Closeout items
- Used parts
Customers are responsible for all return shipping costs.
Once your return is received and inspected, refunds will be processed within 24–48 hours to the original payment method (minus shipping fees). Please allow an additional 2–8 business days for the refund to appear on your account.
Before returning any item, please contact us at support@motostarz.com or call 1-236-481-2222 to obtain a return authorization number. This number must be clearly marked on both the inside and outside of the package.


