Products

Naraku Sports Contra Spring V.2 +1500rpm The current version of the Naraku counter pressure spring uses a modified alloy spring providing better re...

Naraku Sports Contra Spring V.2 +2000RPM The current version of the Naraku counter pressure spring uses a modified alloy spring providing better re...

Fan Wheel for air cooling. This item sits on the alternator rotor.

Naraku performance fan for tuned engines. Also for untuned engines. For AC engines, we recommend an additional air scoop. Please pay attention to t...

Naraku performance fan for tuned engines. Also for untuned engines. For AC engines, we recommend an additional air scoop. Please pay attention to t...

Naraku performance fan for tuned engines. Also for untuned engines. For AC engines, we recommend an additional air scoop. Please pay attention to t...

Crankcase breather system by Naraku. A Simple, yet effective design by Naraku suitable for all 139QMB/QMA (GY6 50) Kymco and GY6 125- 180cc 4- stro...

Crankcase cover for all vehicles with 10” wheels, generally used with 669mm v-belts. Supplied as shown, black.

Crankcase cover for all vehicles with 10” wheels and 4-stroke GY6 139QMB engines. The 10” wheel version generally takes a 669mm v-belt. Colour:...

Crankcase cover for all vehicles with 12” wheels and 4-stroke GY6 139QMB engines. The 12” wheel version generally takes a 729mm v-belt. Colour:...

Crankcase cover for all vehicles with 12-13” wheels or larger and 4-stroke GY6 139QMB engines. These wheel sizes generally take a 788mm v-belt. C...

Crankcase cover gasket [10”-669mm] - GY6 50cc

Crankcase cover gasket [12”-729mm] - GY6 50cc

Crankcase cover gasket [13”-788mm] - GY6 50cc

Right-hand crankcase gasket - GY6 50cc

Mid-crankcase gasket. This gasket seals the left and right hand sides together. Required when changing the crank or completely splitting the cases.

Naraku crankshaft in OEM-quality to match Japanese and Taiwanese alternatives. Kitted with high quality, heavy duty quality bearings which allows f...

Crankshaft in high quality manufactured in Europe for Chinese 50cc 4-stroke engines and 4-stroke 50cc Kymco. High quality con rod tin much better q...

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...

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