Description
Worn or damaged piston rings drastically reduce compression, increase blow-by, and tank your engine’s efficiency—costing you power and fuel economy. This Speed Pro ring set delivers plasma-moly construction for superior durability and heat resistance, ensuring consistent sealing across the full RPM range. Whether you’re rebuilding a naturally aspirated eight-cylinder or prepping for high-boost applications, these rings maintain tight tolerances and reliable performance.
- Bore diameter: 4.165″
- Top ring: 1/16″
- Second ring: 1/16″
- Oil ring: 3/16″
- Material: Plasma moly
- Tension: Standard
- Configuration: 8-cylinder kit
- Manufacturer: Speed Pro
- MPN: R1037540









