M4 Honda Grom 14-21 Low Mount Full Exhaust System

The M4 Honda Grom Full Exhaust System is a low mount full exhaust system with custom bespoke black ceramic muffler. It improves performance, looks, and sound. M4 full system is 37% lighter than stock system! Comes with removable quiet insert Stage 1 part # Q7 (Installed)

THIS LISTING IS FOR AN EXHAUST SYSTEM ONLY, YOU DON'T GET THE WHOLE FUCKING MOTORCYCLE!

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.

M4 Exhaust Dyno Chart

The M4 Exhaust Can for this application includes a Stage 1 part # Q7 (Installed).

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.