TW-Parts.com Cylinder Head 165 till 250 cc - Generation 2

A complete cylinder head including valves and camshaft is delivered.
Compared to the standard cylinder heads from Yamaha, this one has a big advantage: the double ball bearing camshaft.

This is a cylinder head that is mainly used in engines with a displacement of 200 to 250 cc.
The cylinder head can also be used on 125 cc engines if they are converted to 165 cc.

Compared to the 125 cc cylinder head, the cylinder head has:
- a larger combustion chamber
- larger inlet valve with 34.0 mm instead of 29.0 mm
- larger exhaust valve with 28.5 mm instead of 24.0 mm

A notice:
To use this cylinder head, at least a 165 cc piston kit is required.