Wiseco 4102GFX GF-Style Piston Ring Set 4.100 in. Bore Gas Nitrided File-Fit

The Wiseco 4102GFX is a GF-Style performance piston ring set designed for a 4.100-inch bore. Sold as a single-piston set, it is engineered to pair with Wiseco's late-model EFI and high-performance automotive pistons that are spec'd around the GFX ring system. Ring thicknesses are 0.047 in. top / 0.047 in. second / 3.0 mm oil.

Key Features:

• Chrome plated, barrel-faced steel top ring for superior sealing and wear resistance
• Taper-faced, ductile iron second ring for reliable compression backup
• 3-piece oil control ring with stainless steel spacer and chrome plated rails
• Gas nitrided construction for enhanced hardness and surface durability
• File-to-fit design — allows the builder to custom-set the exact end gap for their application
• Sold individually — fits one piston; order the quantity needed for your engine build

Wiseco's GFX ring sets are the preferred choice for builders working with Wiseco's late-model EFI pistons and select performance applications. The file-to-fit feature ensures precise end gap tuning, giving engine builders full control over ring seal and performance.