121" CP Carrillo Custom Pistons Harley Milwaukee-8 Gen 2

High Performance replacement pistons by CP Carrillo for 2024-2025 Harley Davidson Milwaukee-8 CVO 121 engine

These direct replacement stock bore pistons are designed specifically to circumvent failures in the 121" Milwaukee-8 Gen 2 VVT & Non-VVT engine. Significantly increased structural rigidity with 150% more cross sectional material between the wristpin and crown. Premium skirt coating for precise bore fitment & wear protection. Ring lands were also moved away from the crown. Includes premium ring pack including oil support rails. Constructed from from 2618 forged and heat treated alloy, held to the most detailed inspection and tolerances featuring forced pin oiling, advanced cam and barrel skirt profiles, and the flattest ring grooves possible. Pistons work with stock tapered or aftermarket H-beam rods.  

• 4.075" bore
• 11.5:1 compression
• Direct drop in replacement 121" stock bore pistons
• Designed for use with OEM head & base gaskets 
• Premium skirt coating for precise bore fitment & wear protection 

Includes:

• set (2) pistons
• complete set (2) high performance ring packs w/ oil support rails 
• (2) chromoly wristpins & locks