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m4 exhaust
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  1. HardRacing Performance
    M4 Performance Exhaust for the Honda Grom / MSX 125 Features a Low Mount canister with Stainless Tubing & Custom Black Ceramic Muffler. This M4 Exhaust improves performance, looks & sound on your Grom. And Includes a Removeable quiet insert. For more information information, click on the link...
  2. Introductions
    Hello all, I picked up my Grom way back in January at Kent Powesports just North of me in Kyle. I've spent the last 6-7 months tweaking around with the bike and making both minor and substantial upgrades. At 6'0" and 140lbs I can only get the bike to hit 64 at full tuck however. The list of what...
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