Wiseco 40190PS 4 Stroke Forged V-Twin Piston Kit 4.125 In. Bore 10.5:1 CR 117 CID

The Wiseco 40190PS is a high-performance forged piston kit engineered specifically for Harley-Davidson Twin Cam (TC96) engines displacing 117 cubic inches. Delivering a 10.5:1 compression ratio through a 4.125-inch bore, this kit is built for riders who demand more power and durability from their V-Twin without sacrificing reliability.

Key Features:

• Engineered, forged, and machined in the USA at Wiseco's facility in Mentor, OH
• 4.125 in. bore with a 10.5:1 compression ratio for increased performance
• Forged from high-silicon, low-expansion aluminum alloy for superior strength, reduced weight, and improved heat transfer
• Improved tensile strength of forged material optimizes durability and service life
• Dedicated forgings designed specifically for the Harley-Davidson Twin Cam V-Twin engine platform
• ArmorGlide skirt coating minimizes friction, allows tighter bore fitment, and improves wear resistance
• CNC-machined to exact tolerances using high-speed diamond turning centers
• Closer wrist pin boss spacing eliminates wrist pin flex
• Includes high-quality piston rings, wrist pin(s), and circlips

Whether you're doing a reliable stock rebuild or pursuing a high-performance street build, the Wiseco 40190PS forged piston kit delivers the precision engineering and proven durability that V-Twin builders have trusted for over 80 years.