YOSHIMURA RS-4D TITANIUM/CARBON FULL EXHAUST SYSTEM
APPLICATION: Most late-model four-strokes (tested here on the 2012 Honda CRF450R)
-This Full System comes with a titanium header and mid-pipe, Carbon Fiber muffler sleeve, Carbon Fiber Dual-Outlet End cap, installation hardware, and detailed instructions.
-Titanium Systems come with a AMA Pro Racing sound inserts installed in the muffler.
WHAT WE LIKE
-Power is improved all throughout, giving the bike a healthy hit down low that progresses into a strong mid- to top-end pull.
-The RS-4D allows the CRF450R motor to breathe much more freely, opening up the true potential of the bike.
-The entire system is much lighter than stock.
-Mounts up easily and without any problems.
-Quality and craftsmanship is on par with the high price tag.
-Lowers center of gravity, and although difficult to notice, it does improve the turning prowess of the Honda.
WHAT WE DIDN’T LIKE
-Price tag might be too hefty for most people looking for a power increase on their bike.
WHAT WE REALLY THINK
This system is the Ferrari of dirt bike exhausts. The RS-4D is expensive, but it definitely lives up to the price. It’s lightweight, improves power, and is durable in spite of being constructed of carbon fiber and titanium.