Derbi Revolution J.Costa Race Variator and Clutch Kit 305 Malossi part number 3219491

Malossi part number 3219491

Nice replacement crankshaft from Airsal

perfect flow

You can choose left

Flywheel is marked 6v50w

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.