Cylinders and Big Bore Kits

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OEM Replacement Cylinder for original Piaggio Typhoon / Zip AC Scooters


Top quality original Piaggio cylinder for all air-cooled Piaggio engines. Piston, piston pin and circlip are included. We recommend to use a fresh set of gaskets when mounting a new cylinder. Cylinder head is not included, so please use the …

Koso 61mm Forged Piston Kit – Honda Grom


Koso 61mm Forged Piston Kit (MD623000) for the Honda Grom 170cc Big Bore Kit. Includes piston, pin, cir clips and rings Piston Diameter: 61mm Piston Type: Forged Compression Ratio: 11.5 to 1 Piston Compression Height: 19.5mm

NCY Big Bore Cylinder Kit – 72cc Iron Cast 47mm (10Pin) for Minarelli Horizontal / Jog / Vino / Zuma & Various 50cc Scooters


This Air-cooled, 72cc big bore kit consists of a top-quality, Iron cylinder and a 2-ring alloy piston / 10mm wrist-pin design that makes this kit extremely durable and powerful. Perfect fit for a Yamaha Jog, Zuma or Genuine Buddy 50 …

KOSO 4V Cylinder Head kit for Honda GROM®


4V Cylinder Head kit for Honda GROM® Our Koso 4V Cylinder Head kit for Honda GROM® is the ideal engine part to complete the Koso Honda GROM® Big Bore kit. Because of its unique 4 valve design, the air flow and performance are increased. This …

Charmo 58mm Ceramic Cylinder 144cc BBK for Aprilia RS-125


High Quality and affordable complete ceramic coated 144cc big bore rebuild kit for RS125. Comes with everything pictured including cylinder, piston, rings, wrist pin, circlips, and gasket set! Installation video below:

Malossi 190cc Big Bore Kit for HONDA NSR F or R, CRM 125 and RAIDEN liquid cooled


ALUMINIUM Ø 65 CYLINDER KIT Made in Italy. Malossi aluminium cylinder kit: the best balance between component performance and life of the component. The aluminium cylinder kit produced by Malossi s.p.A. is designed and manufactured with the specific objective of obtaining high …

KOSO 170cc Big Bore Cylinder kit for Honda GROM®


170cc Big Bore Cylinder kit for Honda GROM® Want to unleash all the power your Honda GROM® can handle? Our 170cc Big Bore Cylinder kit for Honda GROM® is the perfect addition for you ! The kit includes a ceramic coated cylinder, 61 mm forged piston, …

Naraku BBK Cylinder Kit – V.2 47mm 72cc for GY6, Kymco , 139QMB/QMB139 50cc 2V Scooter Engines


Naraku 47mm Performance Cylinder Kit for the GY6 50cc engine The latest V.2 Cylinder kit series from NARAKU, we can offer a more advanced product. As a 4 stroke cylinder upgrade is effectively just a hole, the emphasis on technological …