JE Pistons JG4904-3937 Piston Ring Set 4 Cylinder File Fit

The JE Pistons JG4904-3937 is a precision-engineered piston ring set designed for 4-cylinder engines. This file-fit ring set allows for custom gap adjustment during installation, ensuring optimal ring end gap for your specific application and maximizing combustion seal.

Key Features:

• File-fit design allows precise ring gap customization for optimal sealing
• Engineered to maximize horsepower through precision sealing of combustion pressure
• High-quality materials designed for durability and reduced friction
• Complete ring set for one cylinder (sold each)
• Manufactured using the same technology trusted by NHRA Pro Stock and NASCAR teams
• Compatible with JE forged pistons and many aftermarket applications

JE Pistons ring sets are available in multiple sizes and materials to suit a wide variety of performance engine builds. The file-fit configuration gives engine builders the flexibility to achieve precise ring end gaps based on specific bore sizes, boost levels, and performance goals. This ensures optimal ring seal, reduces blow-by, and helps maximize power output while maintaining long-term durability.

Note: File-fit rings require proper ring filing tools and experience to achieve correct end gap specifications. Always verify ring gaps according to manufacturer recommendations and your specific engine requirements before installation.