Yoshimura RS-4 Street Series Works Slip-On Muffler with Stainless Steel Sleeve
Yoshimura's Street Series exhausts do not require tampering with your vehicle's emissions control system while still delivering that special spirit the world has come to expect from a Yoshimura exhaust.
The work that went into developing the RS-4 muffler design paid big dividends during development in AMA Pro Racing. That research was directed at developing the RS-4's unique design that provides an unrivaled combination of power and a quiet exhaust note. The RS-4 muffler features a polyresonant duplex chamber, a two-staged stepped baffle and an innovative carbon cone end cap.
Pentagonal-shaped sleeve
Front muffler cap functions as a polyresonant chamber to reduce noise
Two-stage stepped baffle
Carbon fiber end-cap
Includes all required hardware and installation instructions
Product Note:
Specification
Details
CARB Approved
Yes
Country of Origin
USA
Mid-Pipe
Stainless Steel
Muffler End Cap
Carbon Fiber
Muffler Sleeve
Stainless Steel
USFS Approved Spark Arrestor
No
Warranty
1 Year Manufacturer Warranty
Vehicle Fitment
Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.
KTM
790 Adventure 2019-2020
790 Adventure R 2019
Customer Reviews
Yoshimura RS4
By Michael P. on
Verified Purchaser
Received as advertised. Fit perfectly. Thank you for everything.
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Questions & Answers
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