Reply To: My motorcycle loses power at high RPMs and full throttle – Hyosung GTR
Do you have K&N upgrade air filter ? – It is not good to ride without airbox but…. you can use 125cc airbox and 125cc intake pipes , they are just longer pipes and GT250 pipes are just shorter and wider but less with 125cc intake pipes you lose maybe 1-5% power , it is not a big issue. And 140 km is usually the “safe” max speed a factory model 250cc will do, otherwise bigger revs will make valves start “floating” , and premature wear/damage happens soon.
I think maybe you need more air ? So if you have stock air filter, it is a good idea to use K&N
No pod filters , Hyosungs really hate them. you will be in more hell lol.