Blue Line

Complete 72cc iron cylinder & head kit. This works with most Chinese 50cc 4-stroke QMB139 engines. Pump up that weak engine to a respectable 72cc displacement (and stay on  budget). This kit...

This is a high quality 19mm CVK replacement carburetor for all GY6 4-stroke 139QMB 49/50cc Chinese engines. This carburetor is fitted with an 85 main jet. It's better than stock and boasts a larger...

Complete, OEM-style replacement 24mm carburetor with auto choke for 125 - 150cc GY6 engined scooters, bikes, and ATVs. 

Replacement exhaust gasket for all QMB139 and most Minarelli 50cc scooters.

Replacement engine case assembly for GY6 150 long case scooters. Includes hardware. Buffers and bearings are already pressed in. All you have to do is build a scooter engine from scratch. Product is...