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04-18-2009, 11:11 PM
| #1 (permalink) |
| 1st Gear Member Join Date: Jan 2008
Posts: 139
| trx70 big bore
Just got a trx70 that needs a top end. thinking about a big bore kit. any sugestions?
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04-19-2009, 12:17 AM
| #2 (permalink) |
| Old Fart  Join Date: Apr 2007 Location: Marshall,MI
Posts: 1,945
My Mood:  | Re: trx70 big bore
Email Mike at TB (vendor on here) and he will point you to the right kit for it. I went 88CC on ours and WOW.
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04-19-2009, 10:12 AM
| #3 (permalink) |
| 1st Gear Member Join Date: Nov 2008 Location: East Bethel, MN
Posts: 169
| Re: trx70 big bore
I put a TB88cc designed for the atc/trx in mine. It comes with a different piston than the xr/crf 88cc kit because the rods are different lengths. Installed and works great for me.
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04-19-2009, 10:51 AM
| #4 (permalink) |
| 5th Gear Member  Join Date: Sep 2003 Location: KANSAS
Posts: 8,540
| Re: trx70 big bore
The TRX70 has a crank that matches the 12V snout but a rod that matches the Old 6V bikes. Personally, I'd toss on a Trailbikes 108cc Kit with the 51mm stroker crank and leave the OEM TRX70 CDI/Stator in place and run a 24mm carb. If you only want an 88cc kit, run the kit for the 6V Z50's and CT70's with the race head. Run the trailbikes race head.... I just installed the 88 on my 1985 ATC70 and it's a fun little kit. |
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