Vento Phantom Optimized: The exact factory-spec upgrade for the Vento Phantom series
63"Made of high-strength
and 100cc 4-stroke engines using the following factory designations:
Softer Spring = Less belt tension + lower RPM transition
whereas on this replacement
Mazzuchelli, Crankshaft; VLB,VLA,VBB,VBC,VNB,VNC gearset Vento Phantom Optimized: The exactCrankshaft for VLB, VLA, VBB, VBA, VBC, VNB and VNC. Made by Mazzuchelli for non injected motors. This crankshaft is an upgrade over stock, not a performance upgrade. It's a reliability upgrade! Same stroke, better construction.