Piston Technology by Shih Jeng Industrial

The Power Inside: The Engineering Behind the Piston

Among all engine components, the piston is central to converting combustion energy into mechanical output. Shih Jeng Industrial Co., Ltd., based in Taiwan, has specialized in piston manufacturing for decades, offering high-precision and reliable products for motorcycle and small engine applications worldwide.

Material Expertise and Heat Treatment

Shih Jeng pistons are primarily made from high-silicon aluminum alloys such as AC8A and AC9B, offering a strong balance between strength and lightweight. The company’s proprietary heat treatment processes enhance resistance to thermal fatigue, deformation, and wear — ideal for high-pressure and high-temperature engine environments.

Precision Manufacturing

Through advanced CNC machining and automation, Shih Jeng achieves strict control over critical dimensions, including roundness, skirt clearance, and groove depth. All products meet or exceed OEM and aftermarket standards, ensuring stable engine performance and consistent quality.

Diverse Applications

Shih Jeng pistons are used in:

• Motorcycles and scooters

• Small agricultural engines and power tools

• Lawn mowers, generators, and general-purpose engines

Supported piston diameters range from Ø30mm to Ø100mm. Custom specifications are available, as well as complete piston kits including piston rings and wrist pins.

Rigorous Quality Control

Each batch of pistons undergoes destructive testing, thermal cycling, and real-engine validation. Quality is ensured through Statistical Process Control (SPC), vision inspection systems, and 100% final inspection to guarantee performance and reliability.

Conclusion

A high-quality piston is essential to engine performance, durability, and safety. With strong technical capabilities and strict quality control, Shih Jeng Industrial is a trusted partner in the global market for two-wheel and small engine components.

???? Website: www.shihjeng-piston.com