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Discussion Starter · #1 ·
My friend Cameron and I, installed our 16T Jt Sprockets on Sunday and went out for a 120 mile ride.

I haven't made final any final conclusions so far, but I still don't know how much the wind affected the numbers. The last time i did tests, It was late at night and the freeway was clear. I was able to go north/south with the wind to see the boost of a tailwind!

1) With stock gearing, Intake, Yoshi, Givi A660 windshield I was regularly about to get 65+mph. And with a tailwind, I have hit the rev limiter in 4th. I didn't have the app on at the time, but that should have been 73 or 74mph.

2) With the 16T installed I was only able to get to 70mph for a very brief time. It was difficult to get there. Cameron was drafting a lot, and hit 72MPH GPS.

3) We did conduct a 3 grom race. I was surprised that our 16T started off the line faster compared to a stock Grom, but that could have been caused by any of the other mods that were on my Grom.

The reason why i want as much speed from my grom as possible, bc i do take it on the freeways a lot. I don't really care about the max speed. What I want is to be able to maintain a speed of at least 65mph into a headwind. Before I installing the chimera, there were times riding into a headwind on the freeway I slowed down to 48mph going up a very large incline! That was dangerous… When the wind is blowing that hard, just stay on the frontage road.
 

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Is it even legal to take it on the freeway over there? Also I would put the yuminashi 160cc kit and shortend 4th gear and youll be good.
 

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Is it even legal to take it on the freeway over there? Also I would put the yuminashi 160cc kit and shortend 4th gear and youll be good.
I've taken the Grom on and off the freeway around Santa Clara area, Hwy 101, Hwy 237, Hwy 17 "880" just a short hop on a freeway just to get to the next off ramp and I have no problem stay 60-65mph WOT with my 210 lb wt and no head wind. That is why I can't wait to put on my 170cc kit and all the other performance parts so I can maintain 70mph or at lease try to get to 80 with testing of various sprocket changes,head changes stock or port/polish, and different cam Crower vers Yaminashi cam.
 

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Discussion Starter · #12 ·
You may need more mods, I was considering a 16t since I can wrap out +70 pretty easy on my bike
Since after the chimera install, it was performing so well, that i was hoping it had enough power to use the 16T. I'm going to keep it on there for 1-2 more tanks, to see what happens.

Hopefully soon, there will be a windless clear night so i can go have a few more test runs on the freeway.
 

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thanks for the tip,

sorry for the short hi-jack of thread, but hey save some money
I guess it's the same for those shorty levers for the Grom, search ebay/amazon for honda 250cc shorty levers and they should fit the Grom
Thought it was 08+ ninja 250 levers

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So I've also been testing out the 16t and so far I'm really enjoying it. Yesterday I hit 74 on my cluster, unfortunately I was not running my GPS at the time so I have no idea how fast I was actually going. I should mention that I have everything stock except the 16t and that I am a light rider, I only weigh 130.
As far as average speed goes I can easily cruise at 65 (GPS) down the freeway and can push it up to 70-72 (GPS) fairly easily.
 

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I went up 2 teeth in the rear. If I could lose some weight if go back to stock but no taller. Too many hills around here.


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So I've also been testing out the 16t and so far I'm really enjoying it. Yesterday I hit 74 on my cluster, unfortunately I was not running my GPS at the time so I have no idea how fast I was actually going. I should mention that I have everything stock except the 16t and that I am a light rider, I only weigh 130.
As far as average speed goes I can easily cruise at 65 (GPS) down the freeway and can push it up to 70-72 (GPS) fairly easily.
if you saw 74 on the cluster you were probably going 77 or so true speed
 
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