As a core component connecting pistons and connecting rods, the piston pin serves as the pivotal joint for engine power transmission. Its design and manufacturing directly determine the maximum performance and service durability, playing an especially vital role in top-tier WSBK racing events.

Three core factors contribute to enhanced performance and durability:

1、High strength and lightweight design. Adopting hollow structure made of high-grade alloy steel achieves a weight reduction of 30%-50% and raises the maximum rotational speed.
2、Low friction and superior wear resistance. The floating structure combined with DLC coating and ultra-precision grinding effectively cuts friction loss and extends service life.
3、Optimized stress distribution. Micron-level machining accuracy and offset design disperse impact loads and reduce abrasion and operating noise.

In the WSBK practical application case, the championship-winning Zhang Xue 820RR-RS racing motorcycle is equipped with custom-developed piston pins manufactured by Liaocheng Derun Electromechanical. Made of special carburizing steel with nano-coating treatment, these piston pins reach micron-level manufacturing precision and undergo strict multi-level quality inspections including eddy current flaw detection and AI visual inspection.

Capable of withstanding ultra-high speed up to 15000 rpm and extreme combustion pressure, they avoid deformation and fracture, enabling the engine to steadily output 153.6 horsepower and secure victories in both rounds of the competition.

Upgraded with full-range micron-level improvements covering raw materials to sophisticated processing technologies, premium piston pins have become an essential driving force for performance breakthroughs of both civilian and racing engines.