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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
CR85 Low End Power
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[QUOTE="lwsmithjr, post: 512585, member: 35074"] We did the 2mm overbore with the mid and up porting. we also have a Fatty Pipe, Power Core II, and Boyesen dual stage reeds. (We tried the Carbon Fiber reeds but that killed the low end.) My son does only MX on this bike. We didn't lose any bottom because of the overbore and it screams on top. On straights, it pulls the front wheel off the ground in 4th gear (as in, it will loop out if you aren't ready). We have not had this bike in the woods since Eric did the mods. I think it would be a hand full. Based on this, it would be my GUESS that if you went with the big bore and low to mid porting, you would have plenty of bottom and probably not lose much on top. If you did lose some, you could get it back with the pipe. I realize my mods are not what you wanted info on, but thought it may give you some useful data in your search. BTW: According to Eric's website, because of illness in his family, his shop is closed for a few days. (I think other threads referenced his mom having surgery) [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
CR85 Low End Power
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