You can gain +20% power with Tyga exhaust and DynoJet kit to lean out high-end mixtures. This has been dyno-tested and proven by numerous racers over decades. Makes my bike slightly faster than Ninja 300.
There's numerous no-budget mods I've done to shave weight:
- trim fairing-stay bracket to minimum, just 2-arms to hold upper-fairing, remove all wiring brackets, ~1.5-2kg
- remove factory dash, I used Trailtech Vapour, but Koso RX2N clones are great values
- cut off tail of rear subframe after rear seat mounts, ~4kg
- minimal wiring harness, no extra relays, wiring or unnecessary diodes, ~1.1kg
Here is what's left:
Pieces removed:
Major weight-savings require replacing heavy factory parts like handlebars & electronic controls, wheels, rearsets, etc. My bike's down to 129kg from factory 170kg. Could probably remove another 2-3kg by chopping off all unnecessary tabs and brackets on frame. I've got list of mods somewhere. I'll post it when I find it.
Next significant amounts of weight savings would be to replace largest solid fasteners with titanium versions such as F&R wheel-axles, shock-mount and linkage bolts, dog-bones, brake-mounting bolts, engine-mounting bolts, sprocket-carrier studs & nuts, etc. Another 5-6kg there. Honda uses lots of hollow chromoly bolts on their race-oriented bikes that's comparable to titanium. I might just visit Honda dealer and go through their parts bin.
https://racetechtitanium.com/
https://store.mettec.com/category/238
https://titanclassics.com/
https://www.ti64.com/
as usual, ALOC!