convert cr85 to a trail bike

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Jul 11, 2007
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#1
ya if i want to make an 2006 cr85 expert to a trail bike what should i get for it? any suggestions/ good idea?
 
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#2
Eric Gorr 99cc big bore ported for low to mid. These bikes had no lower end power and Eric's work really changes things alot! Basically you could say that it is a night and day difference.
Then add a tooth to the rear sprocket, install a flywheel weight, have the suspension re-valved for trail work and install some good bark busters.
 

_JOE_

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#3
griffbones said:
Eric Gorr 99cc big bore ported for low to mid. These bikes had no lower end power and Eric's work really changes things alot! Basically you could say that it is a night and day difference.
Then add a tooth to the rear sprocket, install a flywheel weight, have the suspension re-valved for trail work and install some good bark busters.
All great ideas. A set of good dual-stage reeds or V-force are also good low end mods.
 
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#4
griffbones said:
Eric Gorr 99cc big bore ported for low to mid. These bikes had no lower end power and Eric's work really changes things alot! Basically you could say that it is a night and day difference.
Then add a tooth to the rear sprocket, install a flywheel weight, have the suspension re-valved for trail work and install some good bark busters.
a tooth to the rear sprocket? idk what that means so can u explain?
 

_JOE_

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#6
mxrcrnick said:
a tooth to the rear sprocket? idk what that means so can u explain?
Get a 1 tooth larger rear sprocket.
 
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#7
sixds said:
you dont need the big bore kit. porting and the flywheel would help alot.
Well you don't NEED anything, but Eric's work will make it an excellent woods bike. And if you deal with Eric, a big bore won't cost you much more than a port job and piston kit from the other guys!
 
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#8
i thought the big bore kit was around 500-600$? i thought porting was around 150 and a piston kit is around 100$.. thats a big price difference.
 

Patman

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#11
You get what you pay for. ESPECIALLY with an Eric Gorr engine.