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Ships within 48 hours · Estimated delivery Oct 2 - Oct 7
perfect flow
Flywheel is marked 6v50w
This kit will require boring your cases
This will not fit your stock style large taper crankshaft
Totally 100% stock and running
Derbi Revolution J.Costa Race Variator and Clutch Kit 305 perfect flowA 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.
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