In the UK you also need to factor in the additional cost of insurance.maddiedog wrote:Valid -- but like with all performance-related issues, it's a trade-off. Would I sacrifice 10mpg, $100, and a few thousand miles of lifetime for an extra 5-10mph? Maybe. It's hard to say. That's the whole point of encouraging people to mod though, it gives more people options for what they can and can't do with their bikes.
You have to notify the insurer of any modifications.
They often charge extra for performance mods and may even refuse cover.
Any un-notified performance modification invalidates your insurance here, this can mean big fines and points on your licence and inevitably even more expensive insurance.
So as far as the UK goes attempting to performance modify a PCX is probably even less "worth it" than elsewhere and imo it should be discouraged.