Junak 121 125 156FMI OHC Cylinder Head Assembly
Brand-new unbranded replacement cylinder-head assembly for compatible 125cc motorcycles using the 156FMI OHC engine family.
Product Details
- Engine family: 156FMI OHC 125cc
- Engine type: Single-cylinder, 4-stroke, air-cooled
- Valve train: Overhead cam (OHC)
- Nominal standard-bore family: approximately 56.5 mm on common 156FMI applications
- Condition: Brand new
- Type: Unbranded aftermarket replacement
Included Components
The uploaded product title describes a cylinder-head assembly with valves, camshaft and rocker components. However, the source description did not independently guarantee every valvetrain component. Please use the product photographs/package contents as the final authority for exactly what is included.
Verified / Researched Applications
| Make | Model / Engine | Fitment Basis |
|---|---|---|
| Junak | 121 125 | Motor-X directly catalogues a bare 125cc 156FMI OHC head for this model |
Important Fitment Information
Direct 156FMI OHC cylinder-head catalogue application. Verify complete-head component layout against the original.
Do not order by “125cc”, “CG125” or “156FMI” alone. The 156FMI designation is used across both OHV/pushrod and OHC derivatives. This listing is for the OHC/cam-chain cylinder-head family, not the classic CG125-style OHV pushrod head.
Before ordering, compare the original head casting, cam-chain tunnel, head-stud pattern, combustion chamber, inlet/exhaust port positions, valve arrangement, camshaft/rocker layout and cylinder-head gasket profile.
Installation
Cylinder-head replacement requires correct cam timing, valve clearance, gasket installation and torque procedure. Professional installation is recommended if the correct engine-building procedure is not known.