K157FMI Cylinder Head for Lexmoto Adrenaline / Valiant 125 Carb
Brand new aftermarket silver cylinder-head assembly for compatible K157FMI-pattern 125cc four-stroke engines. This listing is intended for the older carburettor / Euro 3 head family unless stated otherwise.
What's Included
- 1 x silver cylinder-head assembly
- Camshaft
- Inlet and exhaust valves
- Valve springs
Only the components shown in the product photographs and explicitly listed above are included. Rocker cover, cam sprocket, gaskets, inlet manifold, studs and other hardware should not be assumed included unless visible with the item supplied.
Engine Specification Reference
- Engine family: K157FMI / Suzuki GS-pattern Chinese 125cc engine
- Configuration: Single-cylinder, four-stroke, air-cooled
- Valve train: OHC, 2-valve
- Typical K157FMI bore x stroke: approximately 57.0 x 48.8 mm
- Typical K157FMI cylinder-head valve sizes: approximately 27 mm inlet / 25 mm exhaust on common versions
- Finish: Silver
- Condition: Brand New aftermarket replacement
- SKU: 02268-ENG
Fitment
- Lexmoto Adrenaline 125 / XFLM125GY-2B — carburettor K157FMI version
- Lexmoto Valiant 125 / XF125R — carburettor K157FMI version
Important Fitment Notes
- The carburettor Adrenaline and Valiant use the K157FMI engine family.
- Do not use this listing for Adrenaline EFI XFLM125GY-2B-E4 or Valiant EFI XF125R-E4 without independently confirming the later K157FMI-E head configuration.
Check the complete engine code and the original head before ordering. Confirm the cylinder-head stud layout, camshaft/timing arrangement, inlet and exhaust ports, any secondary-air connection, tachometer-drive provision and rocker-cover mounting pattern.
EFI / Euro 4 Warning
The later K157FMI-E engine family is catalogued with a separate cylinder-head assembly. Do not assume this older K157FMI carburettor head is interchangeable with K157FMI-E, EFI or Euro 4 versions.
Installation
Cylinder-head replacement requires correct cam timing, valve clearances, clean gasket surfaces and the correct torque procedure. Inspect the piston, cylinder, cam chain, tensioner and oilways before assembly. Professional installation is recommended.
Shipping Estimate
Shopify shipping estimate: approximately 3.0 kg packed, with estimated parcel dimensions of 24 x 20 x 18 cm. Replace these figures with the measured packed weight and dimensions when available.