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  1. M4 Exhausts for Honda GROM / MSX 125

    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. M4 Stage 1 Exhaust Kits

    Dobeck Performance
    M4 Exhaust Stage 1 Kit w/ EJK Gen 3.5 or AFR+ Gen 4 Fuel Solution M4 Black Ceramic Full System M4 Exhaust w/AFR+ Stage 1 Kit pricing: $576 M4 Exhaust w/EJK Stage 1 Kit pricing: $446 **Includes free shipping within the continental USA** Hawaii, Alaska, and International orders are responsible...
  3. 6 month Grommer in Central TX

    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...