YX GPX 140cc Manual Clutch Kick Start 4 Gears Up Engine Motor PIT PRO DIRT BIKE. Brand New YX 140cc Manual Engine Motor For PIT PRO PIT TRAIL DIRT BIKE THUMPSTAR. 4-Strokes, Air-Cooled, Single Cylinder, Horizontal. This item is in the category "Vehicle Parts & Accessories\Motorcycle & Scooter Parts & Accessories\Engines & Engine Parts\Complete Engines". The seller is "blygo_parts" and is located in this country: AU.This item can be shipped worldwide.