Carrillo M5023 Forged Piston Kit for Harley Twin Cam 103ci 3.875" Bore 10.25:1 Compression

The Carrillo M5023 is a high-performance forged piston kit engineered specifically for Harley-Davidson Twin Cam engines with 103 cubic inch displacement. This complete piston kit delivers the strength and precision required for demanding performance applications while maintaining exceptional reliability.

Key Specifications:

• Bore Size: 3.875 inches
• Stroke: 4.375 inches
• Compression Ratio: 10.25:1
• Compression Height: 1.085 inches
• Forged from high-strength 2618 aluminum alloy
• Fully CNC machined for precision tolerances
• Balanced to +/- 1 gram for smooth operation

Complete Kit Includes:

• Two pistons with double forced pin oilers
• Premium ring sets
• Wrist pins and circlips

Designed for maximum performance, horsepower, and reliability, each Carrillo piston is manufactured to exacting standards using advanced computer modeling and 5-axis CNC machining. The 2618 aluminum alloy construction provides superior strength and heat resistance for high-performance and racing applications. This kit fits Harley-Davidson Big Twin models from 2007-2017 with 103ci engines, as well as big bore conversions from 96ci to 103ci on Twin Cam platforms.