Wiseco 40185P1 Forged Dome Piston HD Twin Cam 96 10.5:1 103CID 3.885in Bore

The Wiseco 40185P1 is a 4-Stroke Forged Series dome piston engineered specifically for Harley-Davidson Twin Cam 96 (TC96) engines displacing 103 cubic inches. Featuring a 3.885-inch bore and a high-compression 10.5:1 compression ratio, this piston is purpose-built to maximize performance and durability in V-Twin builds ranging from reliable street rebuilds to performance-oriented upgrades.

Key Features:

• Forged aluminum construction — engineered, forged, and machined in the USA in Mentor, OH for superior tensile strength and service life
• Dome profile with a 10.5:1 compression ratio optimized for increased power output
• 3.885-inch (98.68mm) standard bore designed specifically for TC96 engine platforms
• ArmorGlide skirt coating reduces friction, improves scuff resistance, and enables quieter operation
• Designed for each specific V-Twin engine platform to optimize performance and longevity
• Wrist pin, ring set, and circlips included

What's Included:

• Piston #40185P1
• Ring Set #3885VMF
• Wrist Pin #927-2250-17-TSC
• Circlips

With over 80 years of forging experience, Wiseco's V-Twin pistons deliver proven performance whether you're completing a stock rebuild or building for the street and strip. The 40185P1 is the ideal high-compression piston choice for 2007–2014 Harley-Davidson TC96 engines being bored to 103CID.