Products

Complete cylinder head for 50cc 139QMB / QMA engines. Unlike many other available cylinder heads, this is a complete head. That means: valves, valv...

Complete cylinder head for 50cc 139QMB / QMA engines. Unlike many other available cylinder heads, this is a complete head. That means: valves, valv...

Original valve cover for Chinese-built GY6 4-stroke 139QMB/QMA engines. The cover is dispatched without an SLS connection [secondary air system]. T...

Complete valve cover with connector for 50cc GY6 and Kymco 4-stroke engines. The valve cover is ready to install and supplied as shown. The valve c...

Cylinder head gasket [50cc = 39mm] - GY6 50cc

Common problems with stock cylinder heads on the Chinese 4-stroke engines are generally known to be expensive and involve high costs. Chinese repla...

SLS [secondary air system] gasket - 139QMB/A

50cc Cylinder kit for all 50cc 4 stroke Chinese scooters which use the GY6 139QMB/QMA engines. An ideal low cost replacement kit for those worn or ...

72cc (47mm) kit for all 50cc 4 stroke Chinese scooters which use the GY6 139QMA/QMB engines and Kymco 4T. A low cost performance upgrade to stock 5...

81.3cc High performance aluminium cylinder kit from Airsal for 50cc 139QM GY6 Engines. Unlike cast iron cylinders, the aluminium cylinder offers mu...

Malossi BigBore cylinder with 52mm bore in aluminium with hard chromed liner. The bore = 87.9cc capacity. Original head may be retained according t...

With the latest V.2 Cylinder kit series from NARAKU, we can offer a more advanced product. The piston has 2 additional CNC-machined oil grooves in ...

With the latest V.2 Cylinder kit series from NARAKU, we can offer a more advanced product. As a 4 stroke cylinder is effectively just a hole, the e...

With the latest V.2 Cylinder kit series from NARAKU, we can offer a more advanced product. The bore has been taken out to 52.4mm. The external diam...

Malossi High Tech drive belt for racing or tuned engines. Can be used as original replacement, as the price is lower than on the original item. Spe...

A low-cost and good quality, standard replacement belt from NARAKU. The grip provides good acceleration, low loss of traction and optimal power tra...

Low-cost, high-quality replacement belt from NARAKU. The belt corresponds to the standards of the original factory-fitted belt. The flexible core o...

Cost-effective replacement belt for everyday use. Good flex and outstanding grip and can easily be used in lightly tuned engines. Suitable for 139Q...

NARAKU high-quality belts. High grip combined with good flex minimise friction losses and transmit the engines power to the road. One of the best b...