1 - Complete Gasket set. 6 - Rollers (18mmx13mm 8.5g). 1 - Complete Ring Set. Direct Fit for 139QMB / QMB139 GY6 Engines with 64mm Valves.Their are many variants of the 139QMB engine. We cannot guarantee direct fit or any fit at all on these variant engines either with, or without machining.
Please check with local dealer if you are not sure! The item "100cc Big Bore Performance Kit GY6 50cc 139QMB Chinese Scooter 64mm Valve P CK16" is in sale since Monday, January 14, 2013. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Other Engines & Engine Parts".
The seller is "pccmotoparts" and is located in Ontario, California. This item can be shipped worldwide.