Blue Line Big Bore Kit w/ Head 4T (72cc, 64mm Valves); 139QMB Vespa ET2 Adjustable Spring Preload: Raise or

Adjustable Spring Preload: Raise or lower ride height to suit rider weight and preference

and provide a choice option over the standard rubber manifolds

The aggressive pattern provides a high-traction surface for your feet while giving your scooter an industrial

7-spring clutch assembly for vintage Vespa Rally 180 (VSD) models and Genuine Stella bikes with manual transmissions

Blue Line Big Bore Kit w/ Head 4T (72cc, 64mm Valves); 139QMB Vespa ET2 Adjustable Spring Preload: Raise orBlue 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