Would a C20 be a good match for an MHR Cylinder?

Excellent. You don't need to touch it. But if you come into some money, get the Doppler Digital direct (which is really an MVT digital direct with a diferent CDI) for pre 2003 minarellis. It really is a beast. And MVT ignitions are super reliable, with excellent set up instruvtions and after- sales service. I have had mine for about 4 years and it never missed a beat. And I put the Doppler (MVT) on my GF's scoot and holy shit!
But your ignition is the best stock one out there. Never sell that scoot!

 

Copy that thanks for the help mate, you've been my salvation around these bands far too often anything you think I might be able to help, just ask

 

Well, the guy who was selling me the C20 apparently isn't interested in the deal anymore. Now, they guy who's selling me the polini evolution cylinder, can also sell me a polini evolution exhaust, in pretty good shape except it's missing the nozzle, for 80€. Good deadl I guess. would this pipe still perform well with the 21mm dell'orto? How about cooling? Also, anyone knows where can I get the nozzle?

 

It's called a collector I think. They can be ordered - but polini are crap with after sales service. Measure the internl diameter with some calipers. Send me the diameter. If a Yasuni collector for a C16/20 will fit - it will be easier to get than anything made by Polini. I can compare with the Yas collectors I have here.

 

Thanks. Anyway, I ended up buying a c16 since its better for road use and doesnt really bring many benefits over a c20 than the higher rpms (which isnt really a benefit on the road anyway). I also ended up not buying the cylinder, as my mechanic told me id be swapping pistons every month due to it getting "bent" inside the cylinder because of the lack of support of the cylinder skirts...