Thread: does a performance exhaust pipe really make a difference?
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Old 08-21-2013, 03:39 PM   #5
prodigit   prodigit is offline
 
Join Date: Jul 2012
Location: Miami, FL
Posts: 389
I just drilled out my 4 stroke exhaust, on both my 50 and 150cc bike, and noticed a decrease in mid-range torque, but also have now a bit heavier exhaust tone.
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