Electric Piston Ring Filer

The Electric Piston Ring Filer from PROFORM is an essential machine tool for serious engine builders and performance mechanics who demand precision ring end-gap preparation. Whether you're assembling a high-performance street engine, preparing a race block, or restoring a vintage power plant, proper piston ring gap clearance is non-negotiable for reliability and longevity.

This motorized filing system eliminates the tedious—and often imprecise—hand-filing process that has been the standard for decades, allowing you to achieve consistent, repeatable ring gaps across multiple engine builds. Engineered by PROFORM, a trusted name in professional engine machine work, the Electric Piston Ring Filer uses a powered abrasive wheel to file ring ends to exact specifications with minimal operator fatigue.

The compact footprint makes it a practical addition to any machine shop, fabrication facility, or serious home garage setup. The design accommodates standard compression rings, oil control rings, and specialty rings across domestic and import platforms, making it a versatile addition to your engine-building arsenal.