Scooter tuning has never been as easy and inexpensive as with this final complete tuning kit. Great acceleration, higher top end, without the cost and painstaking tuning work: just install all the parts and go. From slow commuter scooters, to great, nippy runabouts. The set is cheaper than the sum of the individual parts. Kit includes tuned manifold, exhaust gasket, sports variator, variator sleeve, weights and carb jet.