Lots of stuff you can pull off before you pull swap out the rear subframe and tank. Passenger foot pegs, rear tail light assembly and swapping to a diffrent exhaust system to name a few. actually the exhaust is HEAVY! As for the rad guards I suggest you keep them on. I had many a crash with no rad damage, then one day a slight tip over killed one of my radiators. The tail light assembly can be replaced and cut some weight.
Bang for buck on power is 3x3 mod, exhaust system, and cams. These together will really wake your bike up. To increase compression swap the S head gaskit for the E. You will need to use premium gas after that however.
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John
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