Hi, I have made following mods on my '99 french import NSR125:
Jet upgrade kit (138,42,65)
Removed exhaust restriction (sawed exhaust in half and removed)
Tv78
Cleaned and adjusted RC valve.
And after all that I can't get it over 85mph/140 kmh. It doesn't have the power to get to 10k in fifth gear, let alone sixth.
Compression great. What could be the problem here? Also sometimes bogs around 6000-7000rpm.