by Warkton Tornado No.1 » Wed Jan 20, 2016 3:04 pm
Hi Paul.
Presuming that the history is unknown, you should look thoroughly @ the bottom end. If you have only a GP 125 crank, it would be unwise to fit a cylinder kit that gives any gain in torque & power.
That really ought to be your first port of call before considering any other upgrade to performance.
Once that assessment is done, & you know what’s required, then a Mugello kit would function well if married to upgraded components, specifically a good crankshaft with a decent big-end.
However, in trying to remain impartial, despite owning Mugellos, I really enjoyed a brief ride I had on a GT kitted bike & you might like to consider the pros & cons that any kit may offer. Reed valve engines can be really sweet in an engine intended to plonk around town on with the occasional run……