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setup is for mountains in bc. down here in alberta im pulling around 84-8500 and at altitude im around 8200. the kit worked well right out of the box but i got myself an air/fuel and found there was still a little room in the top end that could be squeezed.

my rails are off my 12 pro with like i said only about 200km on them in mint shape

stock clutching except im running 66g weights now and still pulling 82-8300 rpm. The kit was around $800 if you send them your stock head as replacement, if not they charge you an extra $150. also my air/fuel is sitting nicely at 12.5 at WOT

i have a set of stock 163 rails with sliders, only have about 200 miles on them.

i have a fix kit from Northstar Performance which includes the pistons, cyclinder spacer, timing key, head, and a control box and it really made a difference. Had to go up 4 grams of weight and the kit was only $800.