CYLINDER HEAD 21-23, 62MM FOR YAMAHA X-MAX, YZF, WR 125 SILVER

Naraku Racing 4-valve cylinder head with 62mm combustion chamber to satiate your appetite for powerIncreased 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 engineThe 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 boreCombustion chamber: 62mmIntake valves: 23mm exhaust valves: 21mmNew 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

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