Thunder Bike 125

180cc Big Bore Kit for GY6 based 125/150cc + engines. The bore is 63 mm, meaning the cases must be worked to accept the cylinder. This requires pre...

Naraku quality shaft seals for scooters with 125/150cc GY6 engines. Shaft seals are required on the rear of the convertor and seal in the convertor...

Complete set of quality crank oil seals from Naraku, for scooters with 125/150cc GY6 engines. Set contains all the important oil seals found in the...

3 Set of sliders for the Naraku Maxi Speed variator for scooters with 125cc GY6 and Kymco AC engines.

15mm gudgeon pin circlips from Naraku. Ensure the clip groove is clean and will allow the circlip to seat properly. When installing, we recommend o...

Cost-effective replacement belt for everyday use. Good flex and outstanding grip and can easily be used in lightly tuned engines. Size: 743-18-20

Complete piston kit including rings, gudgeon pin and gudgeon pin circlips for original or Naraku aftermarket cylinders. Of course, the cylinder has...

Complete cylinder kit with all gaskets and parts for fitting. This 125cc Naraku cylinder delivers engine performance corresponding to the original....

This cylinder gasket set comprises all the necessary gaskets from the base gaskets up. Can be used on Naraku 4-stoke cylinders (NK600.10), but is a...

Naraku clutch spring set for 125/150cc original and Naraku sports clutches for GY6, Kymco, Honda, Malaguti, Keeway Maxi scooters.+1500 rpm +2000rpm...

Current Naraku counterpressure springs with different alloying of the spring steel. A necessary addition where engines have been tuned. RPM increas...

Naraku High Performance clutch bell with patented R-Vent system for more fresh air over the clutch. Prevents wear and loss of friction. Great value...

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...

Naraku cylinder gasket set (61mm/170cc) 4-stroke

Naraku piston kit [61mm / 170cc] 4-stroke

Naraku cylinder gasket set (63mm/180cc) 4-stroke

Naraku piston kit [63mm / 180cc] 4-stroke

Naraku cylinder gasket set (58.5mm/160cc) 4-stroke

Naraku piston kit [58.5mm / 160cc] 4-stroke

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...

Naraku Racing Variator for all GY6 engines with 125cc or above. Set comprises: variator, variator pressure plate, 10.3g sliders, CNC-machined outer...

GY6 Racing CDI with no rev limiter. This CDI features a performance optimised ignition curve: ideal for later tuning mods, such as a big bore kit. ...

160cc big bore kit for GY6 125/150cc + engines. The bore is 58.5 mm. Kit is suitable for all air-cooled 4 stroke 125-150cc Kymco engines (scooters)...

Sports camshaft with altered timing for original and sports cylinder heads. For 4-stroke air-cooled 125-180cc Chinese imports (quads, scooters, Bug...