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Hey My bike seems to top out at maybe 70. I was going up a mountain pass and my bike started acting funny today and totally slowed down hasn't happened before but I have only ridden the pass once before. Any suggestions of things to tweak or replace will be greatly appreciated.
 

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you have lost 21 percent of a 50 hp crank hp or 34-36 rwhp at that altitude and that is if the motor is in good shape so - 7 ish at the rear wheel

for all you formula people

HP Loss = (elevation x 0.03 x horsepower @ sea level)/1000

make sure you gas cap vent is working

what year is your bike so i know if it has a vacuum petcock

when was the last timeit had plugs that can misfire under load in lean air
 
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