Motorcycle Types Adventure / Dual-Sport Kawasaki KX450F: Yoshimura Exhaust

Kawasaki KX450F: Yoshimura Exhaust

Motorcycle Exhaust

The 2011 Kawasaki KX 450F is here, and Yoshimura R&D would like to announce the availability of their race-proven RS-4 series of exhausts for this brand new machine.

The KX 450F is a capable motocrosser on its own, but the addition of an RS-4 exhaust system really allows the machine to breathe and make some serious power.

You’ll notice an immediate boost in horsepower and torque right off of idle, and the improvement in mid-range and top-end power will blow you away!

RS-4 Slip-On

The RS-4 Slip-on is the simplest way to take advantage of the benefits a Yoshimura exhaust can give your KX 450F. Each RS-4 Slip-on is constructed from stainless steel and aluminum-alloy for lightness and strength, and features a stylish carbon fiber end-cap for even more weight savings. The RS-4 Slip-on also includes a USFS approved spark arrestor. Installation is quick and easy thanks to the included hardware and easy to follow instructions that come with each pipe.

RS-4 Stainless/Aluminum Slip-on
P/N: 2446713
MSRP: $395.00

RS-4 Full-System

The RS-4 Full-System takes the already awesome RS-4 Slip-on, and mates it to a high-flow Yoshimura header and mid-pipe for even more power. RS-4 full systems are available in standard stainless/aluminum, full titanium or titanium/carbon finishes. The stainless/aluminum system features a stainless steel header and mid-pipe, while the full titanium and titanium/carbon include lightweight titanium pipes.

 These titanium pipes will help shave a few extra pounds off of your bike, giving you another competitive edge over anyone who is still using stock steel pipes. Each RS-4 system includes installation instructions and mounting hardware for an easy upgrade. The stainless system has a USFS approved spark arrestor while the titanium systems come with an AMA PRO legal sound insert.

RS-4 Stainless/Aluminum Full System
P/N: 2446513
MSRP: $595.00

RS-4 Titanium/Titanium Full System
P/N: 2446177
MSRP: $945.00

RS-4 Titanium/Carbon Full System
P/N: 2446172
MSRP: $995.00

Ron Lieback
Ron Lieback
One of the few moto journalists based on the East Coast, Ron Lieback joined the motorcycle industry as a freelancer in 2007, and is currently Online Editor at Ultimate Motorcycling. He is also the author of "365 to Vision: Modern Writer's Guide (How to Produce More Quality Writing in Less Time).

2022 Kawasaki KLR650 First Look (14 Fast Facts)

2018 was a dark year for Kawasaki KLR650 enthusiasts. It was the last year of the much-loved venerable big-bore dual-sport model that debuted in...

2022 Indian FTR Lineup First Look (8 Fast Facts)

It’s barely 2021, yet the 2022 Indian FTR lineup is here, and there are some significant changes to three of the four variants. In...

2021 Kawasaki KLX230R S First Look (8 Fast Facts)

Just a year after the debut of the Kawasaki KLX230R trail bike, we get our first look at the 2021 Kawasaki KLX230R S. While...

2021 Triumph Speed Triple 1200 RS First Look (19 Fast Facts)

Forget what you know about any previous Triumph Speed Triple. The 2021 Triumph Speed Triple 1200 RS is an all-new naked upright sportbike ready...

2021 Harley-Davidson CVO Limited First Look: Updates, Specs, Photos

The 2021 Harley-Davidson CVO Limited arrives with two new paint choices, plus a couple of updates in the dash area. There’s a new LED...

MP Magic 37.5 Tech Merino Wool Socks Review (All-Season Footwear)

I’m very picky when it comes to motorcycle socks. For dirt bikes, it’s easy. I always wear Fly Racing Knee Brace socks, as they...