Wiseco 4132GFX GF-Style Piston Ring Set 4.132 in. Bore 1.2/1.2/3.0mm Single Cylinder

The Wiseco 4132GFX is a GF-style automotive piston ring set designed for a 4.132-inch (104.95mm) bore, sold as a complete set for a single cylinder. Built to Wiseco's exacting performance standards, this ring set delivers reliable sealing, compression retention, and oil control for high-performance automotive engines.

The top ring features a gas nitrided, chrome-plated, barrel-faced steel construction at 1.2mm thickness, providing excellent wear resistance and a superior cylinder wall seal. The second ring is a 1.2mm phosphate-coated Napier scraper made from ductile iron, designed to efficiently control oil return while supporting the top ring's sealing function. The oil control ring is a standard-tension 3-piece design at 3.0mm, consisting of chrome-plated steel rails and a stainless steel spacer/expander for consistent radial tension and long-lasting oil regulation.

Key Features:

• Bore Size: 4.132 in. (104.95mm)
• Ring Pack: 1.2mm / 1.2mm / 3.0mm
• Top Ring: 1.2mm gas nitrided, chrome-plated, barrel-faced steel — positive twist
• Second Ring: 1.2mm phosphate Napier scraper — ductile/cast iron
• Oil Ring: 3.0mm 3-piece design — chrome-plated rails with stainless steel spacer
• File-to-Fit: Yes — allows precise custom end gap setting
• Gapless: No
• Gas Ported: No
• Quantity: Sold as a set for one (1) cylinder
• UPC: 193564181602

These are file-to-fit rings, giving builders full control over end gap clearance for their specific application. Order one set per cylinder — a full V8 engine build, for example, requires eight (8) sets.