Cylinder Head 21/23, 62mm for Yamaha X-Max, YZF, WR 125

Cylinder Head 21/23, 62mm for Yamaha X-Max, YZF, WR 125

Naraku Racing 4-valve cylinder head with 62mm combustion chamber to satiate your appetite for power

Increased flow, reinforced valve springs and larger valves (21 / 23mm)

Suitable for Yamaha X-Max, WR, YZF-R 125 and other 125 mopeds with YI-3 engine

The carburetor or fuel injection system must be re-tuned (z. B. with Malossi Force Master)

The cylinder head is suitable for following big bore cylinders: Naraku NK600.74, Polini 166.0101, Malossi M.3114852 and other cylinders with 62-64mm bore

Combustion chamber: 62mm

Intake valves: 23mm exhaust valves: 21mm

New models have the lambda sensor connection directly on the outlet (this must be closed on older models)

Scope of delivery without shafts for roller cam followers