Description
Proper piston ring end gap and fit are critical to engine performance, compression, and longevity—and achieving precision specifications by hand is nearly impossible. The Proform Electric Piston Ring Filer 66765 eliminates guesswork with repeatable, accurate grinding to get your rings within factory tolerances every time. Whether you’re building a race engine or restoring a classic, this kit gives you professional-grade results without the machine shop cost.
- Electric-powered grinding tool
- Complete filer kit
- Proform MPN 66765
- Precision ring gap filing
- Consistent tolerance control
- CNC-ground accuracy
- Bolt-on operation
- Professional-grade construction
- Suitable for competition builds
- Eliminates manual filing variables






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