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Malossi part number 3219491
Polini cast iron 49mm 80cc cylinder kit for 4-stroke engines found on the Vespa ET4
Nice replacement crankshaft from Airsal
a greater mechanical "ease" at high speeds and a constancy in performance you've never experienced before with the original version
perfect flow
Derbi Revolution J.Costa Race Variator and Clutch Kit 305 Malossi part number 3219491A variator and clutch kit like we have never seen before. J. Costa Race kit for Derbi Start 3 and Start 5 engines. This kit includes a front IT50Pro variator with 3 sets of weights for fine tuning. The rear clutch uses a unique transverse action for a faster response than a traditional clutch. Is reinventing the wheel the solution for your track prepped Derbi? Maybe? J. Costa developed this setup with the race course in mind.
