Cylinder Head (Pre-assembled with Valves) – For Jinling Racing ATV 300 JLA-931E / Speedstar Quad

Cylinder Head (Pre-assembled with Valves) – For Jinling Racing ATV 300 JLA-931E / Speedstar Quad

Complete Cylinder Head for Restoring Engine Performance

This Cylinder Head is supplied as a complete unit, pre-assembled with valves, and is specifically designed for the engine of the sporty Jinling Racing ATV 300 JLA-931E and the identically constructed Speedstar Quad.

The cylinder head is one of the most highly stressed components of the engine. It seals the combustion chamber, houses the valves, and the camshaft. A damaged cylinder head (e.g., due to cracks, warped sealing surfaces from overheating, or defective valves/valve seats) leads to compression loss, power reduction, and in the worst case, engine failure. Replacing the complete, pre-assembled unit minimizes the installation effort and restores the correct function of the valve train.

Top Features and Benefits:

• Completely Pre-assembled: Includes installed valves, springs, and keepers (ready for installation).

• Compression Restoration: Fixes leaks and malfunctions in the combustion chamber.

• Exact Fitment: Directly compatible with the 300cc engine of the Jinling JLA-931E and Speedstar.

• Original Specifications: Restores the original power and efficiency of the engine.

Product Specifications:

Important Installation Note:

• Cylinder Head Gasket: Always use a new cylinder head gasket (not included in the scope of delivery) to ensure sealing.

• Torque: Strictly observe the manufacturer's specified tightening torques and the correct tightening sequence for the cylinder head bolts to prevent warping of the head.

• Timing: After installation, the camshaft timing must be precisely set.

Secure the full compression and performance of your Jinling 300cc engine!