Posted May 27, 201410 yr ok i have looked in the forum for the answers to my question but i didnt find out how to fix the propblem . i have a yamaha yzf r125 and i had a stock exhaust in which i managed to get 82 mph out of it ,, but i then piad for a scorpion exhuast and the scorpion dealer told me that i didnt need to upjet with these exhaust ,, now iam stugling to push just over 70 mph ,, even when red lining it ,, i feel as its lost power since i put the brand new scorpion exhaust on ,, and that was over 6 months ago ,, my chian is fine , it has also been serviced ,, so any help i would appreciat it ,,
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