Shout out to @delrider302 for letting me get some clips of his CRAZY sounding Kawasaki ZX-4RR! This thing may only be 400cc's, but when that inline 4 cylinder engine starts screaming through the Coffman's Exhaust pipe at 15,000 rpms, it's an absolutely insane sound!

Get your ZX-4RR Coffman's exhaust here!- https://coffmansexhaust.com/products/...

For a more in-depth look at the ZX4RR Coffman's Exhaust slip-on muffler, check out the videos below...

Tim's comparison of Coffman's vs Graves exhausts on the ZX4RR-    • Best Exhaust for ZX 4RR  

Coffman's comparison of this exhaust (Thunder) vs their shorty exhaust (Classic) on the ZX4RR-    • Kawasaki ZX-4RR Exhaust Comparison - ...  

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