best live chat
@@ :active=1,:agrpcount=0,:base_price=896.35,:cancat_id=0,:catcount=9,:code=YOSHRS4YAM,:cost=0,:customfield_values:customfields:brand=Yoshimura,:customfield_values:customfields:rating=4.8,:customfield_values:customfields:RETAIL=995.95,:customfield_values:productimagecustomfields:main=graphics%2F00000001%2Fyoshimura-rs-4-pro-yamaha.jpg,:descrip=%3Cp%3E%3Cspan+style%3D%22font-size%3A+large%3B%22%3E%3Cstrong%3EYoshimura+-+RS-4+Exhaust+System+%28Yamaha%29%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fp%3E%0D%0A%3Cp%3EYoshimura+R%26amp%3BD+has+developed+an+evolutionary+new+exhaust+system.+The+all-new+Yoshimura+RS-4+was+designed+after+extensive+testing+and+the+results+are+profound.%3C%2Fp%3E%0D%0A%3Cp%3EThe+Yoshimura+RS-4+exhaust+system+was+designed+with+one+thing+in+mind%2C+winning+races.+The+RS-4+is+a+unique+design+with+predicated+power%2C+and+a+quiet+earthy+exhaust+note+that+speaks+volumes+for+performance.+It+was+an+obvious+choice+for+the+%26nbsp%3BYamaha+YZ250F+and+YZ450F.%3Cbr+%2F%3E%3Cbr+%2F%3EPro+Series+Full+Systems+include+an+RS-4+muffler%2C+titanium+header%2C%26nbsp%3BTitanium+or+Carbon+Fiber%26nbsp%3Btail+pipe%2C+AMA+Pro+Racing+insert%2C+all+necessary+hardware%2C+and+detailed+installation+instructions+to+get+you+moving.%3C%2Fp%3E,:disp_order=136677,:dt_created=1525795486,:dt_updated=0,:formatted_base_price=%24896.35,:formatted_cost=%240.00,:formatted_price=%24896.35,:formatted_retail=%24896.35,:id=14164,:image=graphics%2F00000001%2Fyoshimura-rs-4-pro-yamaha.jpg,:inv_active=0,,:metafield_count=0,:name=Yoshimura+-+Pro+Series+RS-4+Full+System+%28Yamaha%29,:original_active=1,:page_id=0,:pgrpcount=1,:price=896.35,:quantity=0,:retail=896.35,:taxable=1,:weight=9.95

Yoshimura - Pro Series RS-4 Full System (Yamaha)

Product Code: YOSHRS4YAM
$995.95 $896.35 Sale
You Save: $99.60 (10.00%)
FREE US Shipping when you add this product to your order
FREE International Shipping when you add this product to your order

Get up to 10% CASH BACK instantly + FAST FREE SHIPPING on eligible items - Click for details

  • Description
  • Reviews
  • Customer Photos

Yoshimura - RS-4 Exhaust System (Yamaha)

Yoshimura R&D has developed an evolutionary new exhaust system. The all-new Yoshimura RS-4 was designed after extensive testing and the results are profound.

The Yoshimura RS-4 exhaust system was designed with one thing in mind, winning races. The RS-4 is a unique design with predicated power, and a quiet earthy exhaust note that speaks volumes for performance. It was an obvious choice for the  Yamaha YZ250F and YZ450F.

Pro Series Full Systems include an RS-4 muffler, titanium header, Titanium or Carbon Fiber tail pipe, AMA Pro Racing insert, all necessary hardware, and detailed installation instructions to get you moving.

My First Yosh


My wife purchased a 2016 60th Anniversary Yamaha YZ450F for me. First and foremost, I typically ride street bikes and typically stick with akrapovic exhaust system. After riding my new dirt bike server all times, I decided I wanted an exhaust. I was originally looking at FMF as they are "off-road exhaust kings", after talking with a friend at Mountain Motorsports in Marietta, GA I decided to go with Yoshimura and I can't tell you how happy I am with this exhaust. First of all, they provide all the necessary extras you will need to perform the installation like heat shield material and spring puller. The exhaust is sure nice, easy to install and provide great throttle response. I've performed two test rides with two different maps in my power commander V and only stalled once, with my stock exhaust I stalled all the time. I can't put into word the fit, finish, sound and performance this exhaust provides. I told several friends I ride much better with this exhaust than stock. I super highly recommend this exhaust system. The power commander v is also a very nice unit.

Street and Dirt Rider

Atlanta, GA


I would buy this product again


Great product easy to install.






This system adds a great amount of power and sounds really good. it looks great and is very durable. Also,easy to re-pack(besides having to drill out rivets)drop_in_27[@]


Timmins, Canada


great exhaust


nice looking exhaust with power increase. damaged the stock one so it was time for an upgrade. A friend recommended this system to me and I love it.

Aussie boy



Yoshimura - Pro Series RS-4 Full System (Yamaha)

4.8 4


This website uses cookies to identify visitors, track visitors to our website, store login session information and to remember your user preferences. By continuing to use this site you agree to our use of cookies. Learn More

This website uses cookies. By continuing to use this site you agree to our use of cookies.