CP-Carrillo M5122 Piston Set (M8 - 131ci - 4.310" Bore)
CP-Carrillo M5122 Piston Set (M8 - 131ci - 4.310" Bore)
SKU:M5122
Low stock: 5 left
Descriptions
Descriptions
High-performance forged pistons from CP-Carrillo, engineered for Milwaukee-Eight 131ci big-bore builds. Strong, lightweight, and designed for reliable high-compression power. Ideal for 131ci performance builds wanting strong torque, fast throttle response, and street-reliable power.
Key Features:
- 4.310” bore
- 4.500" stroke
- ~12.0:1 compression ratio
- 1.080" compression height
- +0.39cc dome (high-compression)
- Forged CP-Carrillo piston construction
- Lightweight design for quick revs
- Includes wrist pins & rings
- Laser-etched with Fast Performance Cycles Logo for product validation and streamlined warranty support
Fitment:
- Harley-Davidson Milwaukee-Eight (2017–2022)
- 4.310” bore cylinders
- 131ci builds using 4.500” stroke
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I had an urgent issue with my motorcycle and needed it repaired quickly, and I couldn't have been more pleased with the service I received. The staff at Fast Performance Cycles was extremely knowledgeable and professional, and they took the time to thoroughly explain the repairs that were necessary.
Johnson Doe
Denver, USA