This is a great exhaust system. Mine came with a db killer and an O2 sensor bung for an 18mm and adapter to the stock O2 sensor. It sounds fantastic and fits very well. No need to remove fairings to install unless you replace the O2 sensor.
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M4 Exhaust has gone to great length to ensure their Yamaha YZF-R3 Full Exhaust System is better than the competition. They are confident this system will give you the most power possible from any aftermarket pipes available. This system ships with a race style muffler bracket or you can simply reuse your stock passenger peg. It produces 10% more horsepower (that is a ton) than the stock system and weighs up to 11.5 lbs less. Available dB reducing muffler inserts: Stage 1 part # Q8 (Installed), Stage 2 part # Q6 (sold separately)
M4 Exhaust - Additional Information:
Full Systems - For the ultimate in performance, complete tuned stainless steel systems include all mounting hardware. Optional mounting styles and materials available for select systems.
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.
The M4 Exhaust Can for this application includes a Stage 1 part # Q8 (Installed). If you would like to reduce the db levels of this system Optional 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.