MAHLE 3021263 Performance Napier THM-13 Piston Ring Set 4.025 Inch Bore 1.5mm

The MAHLE 3021263 is a high-performance piston ring set engineered for precision engine applications requiring a 4.025-inch bore diameter. This premium ring set features MAHLE's advanced Napier THM-13 ring design, which provides superior oil control and combustion sealing in demanding performance environments.

Key Specifications:

• Bore Diameter: 4.025 inches
• Ring Thickness: 1.5mm
• Ring Configuration: Napier THM-13 design
• Ring Style: Plain (non-coated)
• Application: Performance engine builds

Features and Benefits:

• Napier-style oil control ring design maximizes oil management and reduces consumption
• 1.5mm ultra-thin profile reduces friction for improved horsepower and efficiency
• Plain ring finish suitable for properly honed cylinder bores
• Manufactured to MAHLE's strict OE and motorsport quality standards
• Precision-engineered for optimal ring tension and cylinder wall conformity

MAHLE is a globally recognized leader in piston and ring technology, supplying components to both OEM manufacturers and the performance aftermarket. This ring set is ideal for engine builders and performance enthusiasts seeking reliable, race-proven components for their builds.