Description
Piston rings are the critical seal between your pistons and cylinder walls—without proper compression and blow-by control, you’ll lose power and invite engine damage. This Speed Pro ring set delivers plasma-moly construction for superior wear resistance and heat tolerance, ensuring consistent performance across full throttle runs and sustained high-RPM operation. Whether you’re rebuilding a race engine or restoring a performance build, file-fit rings give you the precision fit that matters when reliability is non-negotiable.
- 4.125″ bore diameter
- File fit required
- 1/16″ top ring
- 1/16″ second ring
- 3/16″ oil ring
- Standard tension
- Plasma-moly coating
- 8-cylinder kit
- Speed Pro manufacturer
- MPN: R102485









