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

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

Riders with Twin-Cooled Milwaukee-Eight Touring models who want major power gains have a complete solution in the S&S Cycle 128ci Power Package. The conversion delivers a substantial increase in torque throughout the rpm range, giving Twin-Cooled Touring riders a noticeably more forceful and confident throttle response on long-distance rides and challenging terrain.

Key Features

• Complete bolt-in displacement conversion for Twin-Cooled M8 Touring models – no cylinder case machining required
• Available in Chain Drive and Gear Drive cam configurations
• Finish options: Black Granite/Highlighted Fins and Black/Highlighted Fins
• High-flow S&S oil pump included for improved lubrication under elevated output
• S&S 550 cam profile tuned for performance
• Made in the USA by S&S Cycle

Technical Specifications

• Displacement: 128 cubic inches
• Compatible Engine: Twin-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 Twin-Cooled Touring models with M8 114″ or 117″ engine
• Not compatible with Oil Cooled models
• 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