Naraku 09300218 Cylinder headRef : NARK00187A / 09300218

NARAKU - Racing Cylinder Head 4 Valves (ref. NK600.77)

This Naraku Racing cylinder head is designed for 125cc builds delivering a large bore: combustion chamber and bore at 66 mm. Designed for YI-3 type engines, it features a 4-valve architecture with enlarged intake, reinforced valve springs, and oversized valves (intake 25 mm / exhaust 23 mm).

• Combustion chamber: 66 mm
• Valves: intake 25 mm / exhaust 23 mm
• Mounting: compatible with Yamaha YI-3 engines (X‑Max, WR, YZF‑R 125 and other equivalent 125cc models)
• Manufacturer reference: NK600.77
• Ideally pairs with: Naraku big bore cylinder NK600.76 (bore 66 mm)

Intended for road/touring, trail/adventure, enduro, roadster, urban, sports, supermoto, and trial use, this cylinder head promotes an enlarged airflow thanks to the valves and chamber geometry. Note: any modification to the intake or bore requires adjustment of the jet or injection system (e.g. adjustment via a suitable box or module).

Examples of compatible models: YAMAHA YP 125 ABS X‑Max (SEE6), FANTIC 125 M ABS Performance (TL125), MH RANGER 125 LC.