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Old 12-07-2017
Blunny Blunny is offline
dbw Factory Pro
Join Date: Dec 2010
Posts: 734
Big bore kits etc

its been awhile...

Glad to see more interest in YZ250 builds. Mine is still going strong but only at 250CC. One set of rings after 30 something hours and that was because I messed up an air filter install.

Why not try Steve at Ciscos? He worked with Yamaha building their 144 kits, and has built many 300's. I hear he had a big hand in Maddo's famous 500 as well, truth be told hey Nutty?
5 Berg's & 1 VOR (the black XR) and now finally an oily, smokey, smelly YZ 2 stroke.
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Old 12-07-2017
Keg's Avatar
Keg Keg is offline
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Join Date: Apr 2002
Location: 2 Stroke Town
Posts: 9,924
Just buy a new Gasgas. KYB suspension, CR250 rod kit. Sure you wont be able to touch the ground, but it is the closest thing you can buy to a YZ300.
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2018 KTM & Husky 250/300 JD Jetting Kits now in stock!
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Old 13-07-2017
huskybloke huskybloke is offline
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Join Date: Apr 2008
Location: Seaham N.S.W
Posts: 718
I have ended up buying a YZ 285 with low hours on it, it has the MAX power kit with head and power valve machined and ported .
So far I cant knock it , it certainly has more power but usable no out of control powerband .
The only thing I can notice at first is the crank vibration as in at higher revs the centrifugil force , and the long time wear on engine mounts but lets see how it goes
rg 500 13 years of a relationship with a beautiful bike
2003 xr 650 L
2005 husqvarna TE 510
2010 ktm 300 exc
2007 cr 250 back to the future
2012 ktm 250 sx
2010 ktm 250 exc
2008 YZ 250
2015 YZ 250
2013 WR300 Husky
12 YZ 285
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