S&S Cycle Intake Runner — Harley-Davidson Road King, Road King Special, Tri Glide Ultra Classic (2017-2020)

S&S Cycle intake runner for 2017-2020 Harley-Davidson Milwaukee-Eight engines, designed to replace the stock intake manifold and improve airflow. Direct bolt-on replacement without engine modification or machine work.

Features

• Direct replacement for stock M8 intake runner
• Improved airflow design
• 2.5 lb weight

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 170-0648
• Weight: 2.5 lb
• Category: Air Intake Systems / Air Intake Components

Fitment

Fits 2017-2020 Harley-Davidson Milwaukee-Eight (M8) models with stock intake manifold.

Frequently Asked Questions

Will this fit my 2021+ Milwaukee-Eight?

No — this part is for 2017-2020 M8 models. Milwaukee-Eight engines in 2021 and newer use a different intake geometry.

Do I need to tune my bike after installing this?

An air intake change may benefit from a fuel map adjustment. Consult with your tuner to optimize performance.

Is installation difficult?

This is a direct bolt-on replacement. Basic mechanical skills and hand tools are sufficient — no machine work required.

Will this increase horsepower?

Improved airflow can support power gains, especially when paired with other intake or tuning modifications.