Top Through Hole Diameter M. Bottom Through Hole Diameter M. Clutch Mounting Hole Distance: 7.3cm. Clutch Mounting Hole Diameter: 0.289.Carburetor Hole Diameter: 0.213. Pull Start Mounting Hole Distance: 7.3cm. Fits the majority of gas scooters, pocket bikes, and mini choppers. The item "49cc Engine Pull Start 2 Stroke Motor with Gear Box Pocket Bike Gas Scooter EN04P" is in sale since Wednesday, October 21, 2015. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Other Engines & Engine Parts". The seller is "motor99motor" and is located in Ontario, California. This item can be shipped worldwide.