I agree with Nelly John Hackett advised me to go up 3 cogs on the back (equal to 1 less on the front apparently). Really improved the drive & helps at low speeds around town too - less snatchy. I fitted a Renthal quick release kit (£180ish)/new DID 520 Chain/ and a renthal 14F and 40 rear (mines an SPS so it had a 37 originally - I think) Some people say the STM kit is better as it is designed to keep the cush drive rubbers in place - I think tecmoto sell it My honest advice is if you have the cash go up at the rear But from what I've heard Nelly can source & fit any of this kit if you live near Nottm & comes highly recommended Cheers Chris |