5150, got to do it mate. I got all the bits I need to re-line two NT16 engines and got a new connecting rod for £50. May sound alot but one piston and liner alone over here is £30 and thats if you can find it in the first place! The UK distributor SUCKS. They are fine for the Genesis, but ask them about the Fun Factor and just listen to the bs excuses they come up with for the lack of availability. I have gone off on one about this before but I honestly feel as though the CEN brand has been held back in the UK purely due to the lacklustre attitude to its so called distributor. If the brand gets a higher profile as a result of the racing successes, I honestly think that potential new owners will be turned away by the four week wait for a spur gear or shock tower or anything else that is readily available to virtually every other brand user. There rant over. Sorry to take this thread off course again.