72cc High Performance Cylinder Kit for 50cc GY6 QMB139 Scooter Engines (Blemished)

Description

Our Scratch & Dent 72cc High Performance Cylinder Kit for 50cc GY6 QMB139 Scooter Engines is great for increasing overall performance on small underpowered 50cc GY6 QMB139 scooter engines. performance-scooter-engine-kit.html”>72cc High Performance Cylinder Kit for 50cc GY6 QMB139, but not enough to make up an entire kit. So you can save $40 with this “3/4” kit. It includes everything shown in the image; cylinder, rings, roller weights, and more. This 72cc scooter engine kit increases low end acceleration as well as top speed. This high performance scooter engine kit is easy to install. Combine with a high performance carburetor and high performance exhaust and get peak performance from your 50cc gas scooter. A ring compressor may be necessary in order to install the piston in the cylinder included in this kit. This high performance cylinder kit is only compatible with 4-stroke 50cc GY6 engines