Description
Piston rings are critical to engine sealing and compression retention—without quality rings, you’re losing power and risking blow-by that degrades performance. The Speed Pro 4.020 Ring Set delivers reliable sealing with plasma-moly facing that resists wear and maintains consistent pressure across your 8-cylinder build. Whether you’re freshening an existing engine or assembling a high-performance platform, this file-fit set ensures precision fitment and years of dependable operation.
- Bore diameter: 4.020″
- Ring thickness: 1/16 x 1/16 x 3/16″
- Material: Plasma-moly faced
- Tension: Standard
- Fitment: 8-cylinder engines
- Installation: File fit required
- Quantity: Complete kit
- Manufacturer: Speed Pro
- MPN: R977125
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