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  1. Grom Builds
    Hey all. I just purchased a 2019 grom with the 186 big bore, yoshi exaust, and power vision 3. For some reason it really is not performing well. Oil is running hot (250) and it won’t go faster than 55. Could it be the tune or another issue? Any help is appreciated.
  2. Grom Builds
    I was looking on Facebook market place at used big bore groms. Are they a bad idea to buy them used?
  3. Grom Performance
    After beating on our koso 170 4 valve that we built a couple years ago, we decided to bump it up a notch to make more power but also make it as reliable as possible. In order to do that we had to go with a 63mm piston (forged of course) and a tad bit less compression to reduce the risk of...
1-3 of 3 Results