21/23, 62 mm cylinder head for Yamaha X-Max, YZF, WR 125 - 21/23-62MM

Naraku Racing 4-valve cylinder head with 62 mm combustion chamber for maximum power
Greater flow, reinforced valve springs and larger valves (21 / 23 mm)
Suitable for Yamaha X-Max, WR, YZF-R 125 and other 125 mopeds with YI-3 engine.
The carburettor or injection system must be readjusted (e.g. with Malossi Force Master).
The cylinder head is compatible with the following Big Bore cylinders: Naraku NK600.74, Polini 166.0101, Malossi M.3114852 and other cylinders with a bore of 62-64 mm
Combustion chamber: 62 mm
Intake valves: 23 mm, exhaust valves: 21 mm
The new models have the lambda sensor connection directly on the outlet (on older models it must be closed off)
Supplied without axles for roller rocker arms



Specifications


Brand
NARAKU


Supplier reference
NK600.75


Colour/finish
Silver


Product name
Cylinder head kit


Engine type
4-stroke


Units
Kit