Hey guys, could someone look at a manual and tell me what the stock bore size for an '84 ATC250R is? I have an '81 CR250R that I'm working on for a buddy and his cylinder is wore out and I want to see if a spare '84 cylinder is the same. The '81 is 69mm.
Thanks in advance for the help.
Regards,
Josh WInter
At The Back Of The Pack
Arm chair racerAt the back of the pack
The bore size for a 81 is 70mm and the bore for a 84 R is 70mm. The cylinders should be interchangable.
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