Rm 85 mods

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Jul 21, 2014
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#1
I have a 2007 rm 85 and want a way to add 3 more horsepower to match with a 13 kx85 we think to mill of part of the head will add a little bit that I need we want a way to add horsepower with out it being a illegal bike. The bike has a pro circuit the works pipe with v-force threads and namuria piston suggestions.
 
Joined
Jan 21, 2015
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#2
Try the air box mod, it helps, the size of the bike, it helps, but it maters a hella lot more who's riding it.
 

jaguar

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Jul 29, 2000
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#3
Increasing compression does not give anything more than a slight boost in power.
Maybe the other bike has more horsepower but yours may have a better spread of power which is just as advantageous. With pipe changes you can get more power but make it less rideable because the power will be squeezed into a smaller range of rpm.
 
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