Spiro Lock - 0.927

The JE Pistons Spiro Lock 0.927 is a precision spiral lock wrist pin designed for engine builders and high-performance mechanics who require reliable components for their builds. This essential part prevents wrist pin rotation and lateral movement within the piston bore, which can lead to significant engine damage in various applications. Whether you're working on a street performance engine or a competition build, the Spiro Lock 0.927 offers the security needed to protect your investment in quality pistons.

JE Pistons engineers the Spiro Lock using a spiral-wound design that maintains consistent clamping force while evenly distributing stress across the lock's contact surface. The 0.927-inch diameter specification aligns with JE's popular piston bore and pin combinations, making it suitable for a range of small-block and mid-sized displacement builds. Unlike traditional wire or full-circle locks, the spiral design minimizes sharp stress concentrations, which helps reduce the risk of fracture during rapid load cycling.

Engine builders and OEM replacement applications can rely on the JE Pistons Spiro Lock 0.927 for various engine types, including LS and small-block engines. Its minimal profile (0.02-inch thickness) preserves critical piston-to-pin clearances while ensuring structural integrity. The compact 3-inch length fits standard wrist pin geometries, making it a versatile choice for many high-performance engine applications.