For orders of $49.00 or more
Orders over $49.00 may select free 2-Day Express shipping at checkout. This is a residential delivery service, with deliveries Monday through Friday from 9:00am to 8:00pm.
Yoshimura RS-4D Pro Series Titanium Full System Exhaust
The RS-4D builds on the technology that has made the RS-4 a force to be reckoned with on the racetrack, enhancing it's rock solid performance. By increasing the amount of open area at the exhaust outlet, the RS-4D increases airflow, resulting in smoother power delivery and increased throttle control. Testing and Race results have shown that it offers increased horsepower and torque throughout the power curve, especially in the bottom to mid RPM range.
Ultra lightweight carbon fiber end-cap cover.
Unique Dual Outlet design.
Increased torque and horsepower throughout the power curve, with most gains in the bottom to mid RPM range.
Smooth power delivery allowing easier throttle control and less clutching.
Dual tip allows for more flow by increasing outlet open area when compared to single outlet designs.
Dual inserts for horsepower tuning and decibel reduction.
This Full System includes:
Titanium header and mid-pipe.
Carbon fiber muffler sleeve.
Detailed instructions to get you moving!
Titanium Full Systems come with AMA Pro Racing sound inserts installed in the muffler.
If you have the money this is the sickest looking pipe and is as quiet as they claim to be. The pipe also smoothed out the power on my 2012 kx450f. It also gave it a deep throaty sound. I had absolutely no problem bolting the exhaust onto my bike.
5 out of 5 stars
2 years 8 months agoLocation: East Moriches, NY, USA
The Yoshimura RS-4D Pro Series Full System Exhaust (Titanium/Carbon Fiber) is a must have. It is light weight and gives you very noticable low/mid range gains in performance. This system is also extremely easy to install. I would recommend this product to any serious rider out there.
Because this is a full system, would I need to do anything with the jetting or fuel injection system for a 2011 yz450f?
4 months 22 days ago
Yes when installing the Yoshimura RS-4D Pro Series Titanium Full System Exhaust, for best results and to extract the most performance out of the Yoshimura system, fuel injection mapping is recommended.
Will this fit my 2015 RMZ-450? And will it be back in stock soon?
Over 5 months ago
Yes the Yoshimura RS-4D Pro Series Titanium Full System Exhaust will fit your 2015 RMZ-450. Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct exhaust for your bike. For a current ETA please give us a call at 888-676-8853.
Does this fit a yz450f 2013 model ? Thanks michael.?
Over 9 months ago
Yes, Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct exhaust for your bike. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Is Yoshimura RS-4D Pro Series Full System Exhaust - Titanium/Carbon Fiber compatible with crf250l?
2 years 3 months agoLocation: Portland, OR, USA
Unfortunately this exhaust is not available for the CRf250l. We do have the FMF PowerCore 4 Hex models with the FMF Megabomb header available for this model though. If you do order the exhaust, make sure to profile your bike properly so you receive the exhaust specific to your bike.