Products

Original quality aftermarket crank for 50/90cc 4-stroke engines (GY6 50, 139QMB/QMA. The crank is pre-pressed with main bearings and rod. GY6 engin...

Original quality aftermarket crank for 50/90cc 4-stroke engines (GY6 50, 139QMB/QMA. The crank is pre-pressed with main bearings and rod. GY6 engin...

Cylinder base gasket - GY6 50cc

Top end gasket set for the Airsal 80cc sport cylinder kit for 50cc GY6 4-stroke engines.

Complete cylinder gasket set for all 39mm Naraku or original 4-stroke cylinder sets. Kit contains all necessary gaskets from the cylinder base up a...

Complete cylinder gasket set for all 44mm Naraku or 44mm Chinese-built 4-stroke cylinder sets.

Complete cylinder gasket set for all 47mm Naraku 4-stroke cylinder sets Kit contains all necessary gaskets from the base upwards and is exactly sui...

Complete cylinder gasket set for all 51mm and 52.4mm Naraku 4-stroke cylinder sets Kit contains all necessary gaskets from the base upwards and is ...

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...

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

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...

Replacement drive belt suitable for vehicles with 12” wheels. Dimensions: 729-17.7-30

This Variator sleeve replaces the original factory fitted sleeve and collar. This lifts the restricted power. The scooter will be capable of approx...

Gearbox input shaft for GY6 139QMB/QMA. This is where the clutch and converter pack are mounted.

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

Starter motor, suitable for all Chinese-built 4-stroke engines. This item can be used without a problem, even where the originally fitted item has ...

This bearing set contains all the relevant bearings found within the engine. A complete kit, at a low price. Crank main bearings not included. Not ...

Right-hand engine case, connects to the right-hand crankcase. Suitable for GY6 50cc 139QMB/QMA engines.

Complete replacement engine for Chinese-built 4-stroke scooters with 12” wheels. As a result of the time saved, at times replacing the entire eng...

Complete replacement engine for Chinese-built 4-stroke scooters with 12” wheels. As a result of the time saved, at times replacing the entire eng...

Dowel pin set for 50cc GY6 engines Delivery contains: 6x dowel pins for M7 (cylinder, cylinder head) 6x dowel pins for M6 (engine cases, crankcase ...

Complete engine gasket set for all Chinese-built 4-stroke GY6 139QMB/QMA scooters with 10” wheels; v-belt length 669mm, crank-gearbox input shaft...

Complete engine gasket set for all Chinese-built 4-stroke GY6 139QMB/QMA scooters with 12” wheels and short engine block; v-belt length 729mm, cr...

Complete engine gasket set for 50cc GY 139QMB/QMA engined scooters with 12” wheels or larger; v-belt length 788mm, crank-gearbox input shaft 28cm...

Engine mount for 139QMB/QMA engines. This version has a round thrust bearing (tube). Check item against image. Bolt and nut not included!

Floating axle for engine mounts. Only the bolt and nut, engine mount not included.