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S&S Cycle 128" Power Package Kit for M8 Engines - Gear Drive, Wrinkle Black Finish, Part 310-1104A
Regular price $3,460.95 USD
128" Power Package - Gear Drive - Wrinkle Black with Highlighted Fins - 114"/117" M8 Upgrade your Milwaukee-8 (M8) engine with the...
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128" Power Package - Gear Drive - Wrinkle Black with Highlighted Fins - 114"/117" M8
Upgrade your Milwaukee-8 (M8) engine with the S&S Cycle 128" Power Package Kit, designed to deliver increased performance and reliability. This kit features a big-bore bolt-on configuration that boosts engine displacement from 114"/117" to 128" without requiring case modifications, making it an ideal choice for riders seeking significant power gains. The kit includes 4-1/4" bore cylinders with forged pistons rated at 11:1 compression, ensuring durability and high-performance output. The package also incorporates a high-quality oil pump and cam plate with a striking blue anodized finish, featuring removable passage plugs for ease of servicing and independent scavenge sections for the flywheel cavity and camchest, which improve oil flow and reduce contamination risk. An integrated debris screen and a magnet in the camchest help prevent debris from entering critical oil passages, enhancing engine longevity. It offers increased oil flow capacity on both feed and scavenge sides, promoting better lubrication under demanding conditions. The adjustable pressure relief valve allows fine-tuning of oil pressure without removing the unit from the engine, ensuring optimal performance. The kit also includes S&S Quikee pushrods with chrome tubes for precise valve operation, premium tappets, and black-coated, billet aluminum tappet cuffs designed to improve stability at high lift and high RPM. The included S&S 550 cams are engineered specifically for big bore applications, providing a significant power increase. Complementing the setup are high-performance conical single-wire valve springs capable of supporting valve lifts up to .605", ensuring reliable valve control at high RPM. Overall, this Power Package Kit offers a comprehensive upgrade to enhance your M8 engine's horsepower, torque, and durability, making it an excellent choice for serious riders seeking top-tier performance.
Features:
- Big bore bolt-on kit increases engine displacement from 114"/117" to 128" with no case machining required.
- Includes 4-1/4" bore cylinders with forged pistons rated at 11:1 compression for durability and power.
- Oil pump and cam plate with removable passage plugs and independent scavenge sections improve oil flow and serviceability.
- Debris screen and magnet in camchest help prevent debris from entering the oil pump, extending engine life.
- Enhanced oil capacity on feed and scavenge sides for better lubrication under high-performance conditions.
- Adjustable pressure relief valve allows tuning of oil pressure while installed in the engine.
- S&S Quikee chrome pushrods paired with high-quality tappets ensure precise valve operation.
- Black-coated, billet aluminum tappet cuffs improve stability at high lift and RPM.
- S&S 550 cams designed specifically for big bore applications increase horsepower and torque.
- High-performance conical valve springs support valve lifts up to .605" for reliable high-RPM operation.
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