M4 Yamaha YZF-R1 15-24 GP Mount Slip On Exhaust w/ Catalytic Converter Eliminator

The M4 2015 Yamaha R1 GP Mount Slip On Exhaust w/ Cat Eliminator drops 12lbs as compared to the stock canister and catalyst. As we have come to expect with M4 the exhaust note is nothing short of wicked! The GP2 Exhaust Canister looks great mounted to the matching cat eliminator. This set up will improve performance and unleash the wicked note hidden inside that cross plane 1000cc engine!

Note: Installation of this system eliminates the catalytic converter. This system is intended for closed course use. M4 Recommends re-flashing your stock ECU to unleash the full potential of all M4 products on the 2015 and up Yamaha R1.

The M4 Exhaust Can for this application includes a Stage 1 part # Q1 (Installed). If you would like to reduce the db levels of this system Optional Stage 2 part # Q3 Quiet Inserts are sold separately and are available for purchase from SportbikeTrackGear.com using the link found below.

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.