- Significant Performance Improvement
- Comes with Race Bracket to Remove Passenger Foot Peg
- 304 Stainless Steel Tubing
- Q10 Quiet Insert Available but Sold Separate
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 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.
Write Review
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M4 full system for R9
Well made and was easy to install after removing belly pan and side fairings. Lighter than stock system too. Not too loud on bike but def not the system you want on if you leave for work at 5AM! Show about 88dB at idle. Combined with ECU flash you’ll have a better running and sounding R9.
- Availability:
- STG Part Number:
- M|M4 YA6944|0
- Manufacturer's Part Number:
- 51
