Manley 46121GT-8 Performance Piston Ring Set 99.62mm 3.922in Bore Gas Nitrided Top

The Manley 46121GT-8 is a high-performance piston ring set designed for 99.62mm (3.922") bore applications. This 8-piece set is engineered for demanding performance and racing environments where superior ring seal, thermal stability, and durability are required.

Key Features:

• Bore Size: 99.62mm / 3.922 inches
• Top Ring Width: 1.5mm — Gas Nitrided (GT) for exceptional hardness and wear resistance
• Oil Ring Width: 3mm steel construction for consistent oil control
• Gas Nitrided Top Ring: Provides a harder surface than standard rings, reducing friction and extending service life under high heat and pressure
• Set Quantity: 8 rings (sufficient for one 8-cylinder engine)
• Application: Designed for high-performance street, strip, and competition engines

Manley Performance has been a trusted name in high-performance engine components for decades. The 46121GT-8 ring set delivers the tight tolerances and material quality demanded by engine builders looking for reliable ring seal in boosted, naturally aspirated, or high-compression applications.