Naraku 09310889 Cylinder-piston kitRef : NARK00071A / 09310889

NARAKU 150 cm³ cylinder kit (ref. NK600.73) designed for 125cc YI‑3 type engines. Kit delivered with all necessary gaskets and small parts for assembly. Bore Ø60 mm, designed to accommodate a suitable cylinder head (see recommendations).

• Compatibility: suitable for YI‑3 engines fitted to several 125 cc models — examples: Yamaha X‑Max, YZF‑R125, WR125. Also suitable for models such as RIEJU RS3 125 NKD and BETA RR 125 LC depending on the engine configuration.
• Installation advice: for optimal fit and power, Naraku recommends the NK600.75 cylinder head (designed for Ø60 mm). The original cylinder head can be used, but the squish must be properly adjusted with appropriate base gaskets.
• Necessary adjustments: carburettor or injection system to be reconfigured (e.g. Malossi Force Master) to adapt the fuel mixture / mapping to the new cylinder volume.
• Delivery: complete kit as shown in the photo, including gaskets and mounting parts.

This kit is aimed at riders wishing to modify the displacement of their 125cc YI‑3 while retaining a standard base. Technical installation — check the exact compatibility with your model and entrust the installation to a professional if necessary.