Akrapovic Yamaha YZF-R1 15-21 Evolution Line Full Exhaust with Carbon Canister
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The M4 Yamaha R7 Full Exhaust System really helps transform your R7 into a true high performance machine. This system removes 7.7 lbs and produces close to 7% more horsepower over the stock system. The whole system is constructed from high quality 304 stainless steel and includes a carbon canister.
Bolt On/Slip Ons - These systems utilize the stock header assembly. Bolt on and slip ons replace the stock restricted muffler resulting in better sound and an increase in power.
Headpipe/Collector Assembly - Full systems include tapered and equal length headpipes with true high-flow merge collectors.
Silencer - M4 silencers look as good as they perform. Polished steel, titanium, black satin and carbon fiber silencers are offered to suit your style.
Midpipe - Careful design of the midpipe is necessary to give exhaust gasses optimum flow and improved power characteristics.
If you would like to reduce the db levels of this system Optional Stage 1 part # Q8 and Stage 2 part # Q6 Quiet Inserts are sold separately and are available for purchase from SportbikeTrackGear.com using the link found below.
|M4 Exhaust Quiet Insert (Db Reducer)|
|Emissions Notice to Customers in California|
Important Emissions Notice to Customers in California
The State of California prohibits the offer for sale, sale, or installation of an aftermarket part, which alters or modifies the original design or performance of a motor vehicle's pollution control devices or systems, unless the aftermarket part has first been exempted from the state's anti-tampering laws and been issued an Executive Order (EO) number by the California Air Resource Board (ARB). Legal in California only for racing vehicles which may never be used, or registered or Licensed for use, upon a highway. Any California Residents who order this M4 Exhaust from Sportbike Track Gear llc agree they are doing so with the intention of using it on a closed course as outlined within the California Notice.