Piston Rings for 2004-2021 Subaru WRX / STI w/ 100.25mm Bore Diameter by Manley Performance

Manley Piston Rings provide minimal blowby and increased horsepower while maintaining cooler, cleaner oil resulting in longer engine life. Manley ring sets feature a ductile iron plasma moly top ring, a conventional reverse twist cast iron second ring, and a 3 piece standard tension oil ring.

Measurements

• Material: Double Tabbed Premium Steel
• Bore Diameter: 100.25mm
• Top Ring Width: 1.2mm
• 2nd Ring Width: 1.2mm
• Oil Ring Width: 2.0mm
• Oil Ring Tension: 9-13-lbs.
• Installation Type: File Fit

Please Note: Manley Piston Rings are purpose-built to be installed on Manley Pistons only. Installed or partially installed piston rings are ineligible for return.

Applications

• 2004-2021 Subaru WRX / STI (EJ257)

What’s In The Box?

• 4 – Piston Rings

Warranty

• Limited Manufacturers Warranty