Noise Suppressor Black Fits 2.25 Inch Outlet (For Slash Cut 2)

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  • Installs to 2.25" Brock's Performance Slash Cut 2 Mufflers ONLY
  • Measure your muffler outlet prior to ordering to verify the correct size is selected
  • Reduces noise by 10 dB at idle (varies depending on machine) while only losing 5-8% of peak power
  • Easily removes or installs using a 5/16” (8mm) wrench
  • Stainless steel insert designed to withstand extreme exhaust temperatures
  • Black Cerakote to match the finish of Brock’s performance exhaust systems
  • Stainless steel hardware for ultimate corrosion resistance
  • Tapered mounting head for a sleek look and reduced weight
  • Mounting head CNC machined from 6061-T6 billet aluminum
  • Laser etched Brock's Performance logo
  • Click to view Noise Suppressor Installation Information

Neighbors give you the 'stink eye' when you cruise by? Buddies won't ride next to you any longer? We know you aren't getting any older (so we won't ask.) Let's face it… you purchased your Brock's Performance exhaust because it performs, looks and sounds BADASS, but there are some occasions when that sound needs to be kept in check, and you are mature enough now to give up a few ponies, if you can keep a reasonable tone. Well, Brock has listened to your requests, and he and his team have developed a good looking, quick and easy cure for your 'hum in the drum'. Our new Noise Suppressors have a fantastic ability to curb the noise, and they install in seconds (and your ass-dyno probably won't know the difference.) Your ears, however, will definitely notice a reduction in noise, without completely trashing the sound we know you love (and that was our goal.)

Test Bike: Kawasaki Ninja H2 (2016) w/ Slash Cut Full System

Dyno Chart (STD Scale) Click image to enlarge

Noise Suppressor Decibel Reduction Testing

Testing procedure performed according to SAE J2825

BMW S1000RR (2011):

Alien Head 2 Full System:

Idle: 109dB / 5000 RPM: 115dB

Alien Head 2 Full System: (with Noise Reduction Plug)

Idle: 106dB / 5000 RPM: 112dB

Alien Head 2 Full System: (with Noise Suppressor)

Idle: 102dB / 5000 RPM: 110dB

Honda Grom (2014):

Alien Head 2 Full System:

Idle: 98dB / 3000 RPM: 107dB

Alien Head 2 Full System: (with Noise Reduction Plug)

Idle: 97dB / 3000 RPM: 102dB

Alien Head 2 Full System: (with Noise Suppressor)

Idle: 87dB / 3000 RPM: 97dB