Blue Line Big Bore Kit w/ Head 4T (72cc, 64mm Valves); 139QMB Vespa ET2 and Super model Vespa scooters

and Super model Vespa scooters

See the fitment table below to confirm compatibility with your model

BALL END ALLEN SET 9PC * Made of chrome-vanadium tool steel * Sizes included 1

Engine Codes 139QMA

Dimensions: 19mm x 15

Blue Line Big Bore Kit w/ Head 4T (72cc, 64mm Valves); 139QMB Vespa ET2 and Super model Vespa scootersBlue Line Complete 72cc High Performance Big Bore Cylinder Kit for 50cc 4 stroke 139QMB engines. Original Parts For Scooters SKU 151 280 47mm NOTE: Before ordering, remove the valve from your scooter's head and measure the full length of the valve stem. This kit works with 64mm valves. If your scooter has 69mm valves, you'll need the following 69mm big bore kit. Pump up that weak engine to a respectable 72cc displacement, on a budget. This kit is not