S&S Cycle 128ci Power Package for 2017-Up Harley-Davidson Oil Cooled Milwaukee-Eight

S&S Cycle 128ci Power Package for 2017-Up Harley-Davidson Oil Cooled Milwaukee-Eight

Riders seeking a serious displacement upgrade for their Oil Cooled Milwaukee-Eight have a complete solution from one of the most respected names in American V-twin performance. The S&S Cycle 128ci Power Package delivers a substantial increase in torque from idle through the upper rpm range, giving Touring and Softail riders more power on the highway and in the mountains.

Key Features

• Complete bolt-in displacement conversion – no cylinder case machining required
• Available in Chain Drive and Gear Drive cam configurations
• Multiple finish options: Black/Highlighted Fins, Black/Non-Highlighted Fins, and Black Granite/Highlighted Fins
• High-flow S&S oil pump included for improved lubrication under elevated output
• S&S 550 cam profile tuned for performance applications
• Made in the USA by S&S Cycle

Technical Specifications

• Displacement: 128 cubic inches
• Compatible Engine: Oil Cooled Milwaukee-Eight 114″ or 117″
• Compression Ratio: 11:1
• Cam: S&S 550
• Drive Options: Chain Drive or Gear Drive
• Included Components: Cam, cam plate, high flow oil pump, valve springs, lifters, pushrods, tappets, tappet cuffs
• Country of Origin: USA

Fitment Notes

• Fits 2017-Up Harley-Davidson Touring models with Oil Cooled M8 114″ or 117″ engine
• Fits 2018-Up Harley-Davidson Softail models with Oil Cooled M8 114″ or 117″ engine
• Not for CVO models or Trike models
• Bolt-in installation – no special machine work required
• Review the Fitment tab for complete year and model breakdown