Yoshimura RS-4 Signature Series Full System Exhaust SS-SS-CF - 391000D520

Item # : 156829

Not sure if this part fits your vehicle?

2 Check the manufacturer's website for further fitment information.

Processing Time: Leaves our warehouse in 1 to 2 days.

* Required Fields

List : $1,189.95


6% off

Please enter a valid email.
Signing up...
Thanks! We will notify you by email when this item is back in stock.
  • Free Shipping on orders over $49*
  • Canada
  • Easy Returns
  • SSL Secure


  • Manufacturer: Yoshimura


Yoshimura ARCTIC CAT WILDCAT/4/X Signature RS-4 FS SS-SS-CF

Stainless Steel Header / Stainless Steel Muffler / Carbon Fiber End-Cap

The RS-4 Full System is impressive. It’s CNC mandrel bent using polished 18-gauge 304 Stainless Steel tubing for a long lasting, durable and rust-resistant life. Headers feature an over-sized step tube design for maximum power throughout the entire RPM range. Argon purged MIG welding ensures absolute top-quality fit and finish. Put it all together and you have a full system that is over three pounds lighter than the stock unit and increases overall power from idle to redline. In addition, the RS-4’s premium muffler packing helps meet the USFS noise specifications. The RS-4 comes with USFS approved spark arrester installed.

  • Pentagonal-shaped sleeve
  • 304L stainless steel CNC rolled and robot-welded canisters
  • Two-stage stepped peforated baffle
  • Carbon fiber end-cap with embossed logo
  • CNC Mandrel-bent polished 304L stainless steel header and tail-pipe
  • CNC mounting brackets and articulating silicone-rubber mounting bushings
  • USFS Approved spark arrester installed

Installation Instructions

Exhaust Signature Series Introducing Signature Series by Yoshimura - an offering of exhaust systems that can be installed with confidence. Signature Series lineup is the answer for today's challenging marketplace. The applications for the Signature Series line cover the entire powersports spectrum, including many of off-road applications. Everyone of Yoshimura's Championship Winning Motocross exhaust systems and nearly all of out ATV/Side-by-Side applications are all members of the Signature Series Family. All Signature Series components are tested, documented, and marked as required by federal and state regulations.

Manufacturer Part Number: 391000D520