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Discussion Starter · #4 ·
Fucking right!

How simple do the 10mm bolts come out? Could you do it with a ratchet or will a small impact work best?

thanks for the vid, how's it run now?

Very easily, had a small 1/4 inch ratchet and they came right off.

I havent even tested it yet! I will in a little and ill report back on top speed/ acceleration.
 

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Discussion Starter · #5 ·
Update: Seems to have noticeably more pep in 1st and 2nd gear.

Top speed seems to be better as well.

I hit 65 on this hill earlier today, went back and hit it again with the new gear and was able to hit 72 mph which should really be about 69 MPH if you calculate for the speedo being off with the new gear.

So I would say its fair to say the gear def helps out
 

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I was told the CRF 80 sprocket will work so I have one on order. $3.12 from my dealer.
Anyone else order one from a CRF 80? I asked the dealer for one for a Grom
and they said no one had any out yet.
 

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Discussion Starter · #13 ·
I was told the CRF 80 sprocket will work so I have one on order. $3.12 from my dealer.
Anyone else order one from a CRF 80? I asked the dealer for one for a Grom
and they said no one had any out yet.

Yea, crf 80 and xr80 should be the same one, chain 420.
 

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Discussion Starter · #14 ·

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Mine hits 8500rpm in 4th now. Top speed is improved. Every gear is more fun. I have a 16t sitting here but i doubt it will get installed.
 

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I couldnt get it past 8000 rpm in 4th. Biggest improvement for me is the ability to go uphill without losing 10mph.
 
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