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Top Speed

This is a discussion on Top Speed within the Grom Performance forums, part of the Honda Grom Garage category; I rode with the local Grom guys last night. My Grom still has the HP. I went back to 16/33 gearing and it pulled 104 ...

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    Top Speed

    I rode with the local Grom guys last night. My Grom still has the HP. I went back to 16/33 gearing and it pulled 104 mph last night on damp roads in hot weather with high humidity running rich on pump gas. I may make another video soon to raise the bar and add a few mph to the 104 mph run. I just need the weather to cooperate.






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    Great going, I'm hoping to hit the 100mph mark soon. My takegawa 181-4v is almost back together,I'm deciding if I should port out the exhaust port on the takegawa head since I might use the finbro 204-4v full exhaust system that was designed for their 204 engine.

    The other thing that I'm deciding on is the size of the F/I to use, might start out with the Finbro 6 hole for breaking in the engine and later switching to the 10 hole injector that HR sells.

    Can't wait to try out the takegawa 5 sp transmission and the new Kitaco crank/rod unit

    Other things to do is polish certain internal body areas of the Kosa 34 mm throttle body.

    Congrats again

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    I'm hoping to hit 80.
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    hell yeah!!!!!!! get after it man.. I caved in and got the tak 181 cylinder figured if I couldn't beat ya at 170 id at least join ya

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    Quote Originally Posted by GSX View Post
    I rode with the local Grom guys last night. My Grom still has the HP. I went back to 16/33 gearing and it pulled 104 mph last night on damp roads in hot weather with high humidity running rich on pump gas. I may make another video soon to raise the bar and add a few mph to the 104 mph run. I just need the weather to cooperat




    What brand and speed rateing tire are you using at that speed?

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    What phone app is that?


    Sent from my iPhone using Tapatalk

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    Quote Originally Posted by mikez View Post
    What brand and speed rateing tire are you using at that speed?

    Michelin Power Pure. Not sure of the speed rating.

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    Quote Originally Posted by Ridem32 View Post
    What phone app is that?


    Sent from my iPhone using Tapatalk
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    How big a boy are you GSX? I'm trying to push my stock stroke 2 valve motor, but think I'm going to need a jockey to get big numbers. I'm 270 with gear on hitting 85.

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    Quote Originally Posted by keit29 View Post
    How big a boy are you GSX? I'm trying to push my stock stroke 2 valve motor, but think I'm going to need a jockey to get big numbers. I'm 270 with gear on hitting 85.
    I'm 195 riding weight with gear on.

    I've been 93 with a passenger (combined weight of 325 approximately).
    keit29, Ridem32 and 8701michael like this.

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