S&S 55mm CNC Ported Performance Manifold for 2017-2023 Harley M8

Product Description

S&S 55mm CNC Ported Performance Intake Manifold for Harley M8

Improve airflow and intake efficiency on your Harley-Davidson Milwaukee-Eight engine with the S&S Cycle 55mm CNC Ported Performance Manifold. Engineered for riders looking to get more out of their M8 performance upgrades, this premium intake manifold features precision 5-axis CNC porting designed to deliver consistent airflow characteristics and improved fuel-air mixture preparation.

Unlike traditional polished intake ports, S&S uses a specially engineered textured surface that increases internal surface area to encourage fuel dissipation and more effective atomization. The result is an intake design optimized for efficient airflow and consistent fuel distribution.

Designed to work with 55mm throttle bodies and both factory and ported cylinder heads, this manifold is an excellent addition to Milwaukee-Eight engines equipped with performance camshafts, upgraded exhaust systems, and other supporting modifications. A durable, high-temperature black powder-coated finish provides lasting protection and a clean appearance.

Fitment

• 2017-2023 Harley-Davidson Milwaukee-Eight Touring models equipped with compatible 55mm throttle bodies
• 2018-2023 Harley-Davidson Milwaukee-Eight Softail models equipped with compatible 55mm throttle bodies
• Compatible with factory and ported cylinder heads
• Designed for applications using a 55mm throttle body

Important Fitment Note: This manifold is designed for Milwaukee-Eight applications using a 55mm throttle body. Verify throttle body diameter and compatibility before ordering. Fitment and emissions compliance for later model years or modified engine configurations must be confirmed separately.

Features

• Premium S&S Cycle performance intake manifold for Harley-Davidson Milwaukee-Eight engines
• Precision 5-axis CNC porting produces consistent intake passage geometry
• Optimized internal port shape designed for efficient airflow
• Specially textured intake surface encourages fuel dissipation and atomization
• Compatible with 55mm throttle bodies
• Works with factory and professionally ported cylinder heads
• Excellent upgrade for performance-oriented Milwaukee-Eight engine builds
• Durable high-temperature black powder-coated finish
• Includes intake seals for installation
• Designed and manufactured in the USA

Specifications

• Manufacturer: S&S Cycle
• Manufacturer Part Number: 160-0276
• Drag Specialties Part Number: 1050-0472
• Product Type: CNC Ported Performance Intake Manifold
• Engine Compatibility: Harley-Davidson Milwaukee-Eight
• Throttle Body Size: 55mm
• Porting: 5-Axis CNC Machined
• Finish: High-Temperature Black Powder Coat
• Included: Performance Intake Manifold and Intake Seals
• Country of Manufacture: USA

Performance & Installation Notes

The S&S 55mm CNC Ported Manifold is designed to improve intake airflow characteristics while maintaining compatibility with 55mm throttle bodies. Its precision-machined internal passages make it suitable for stock and modified Milwaukee-Eight engines where efficient airflow is a priority.

For modified engines, verify compatibility with the throttle body, cylinder heads, and other intake components. Appropriate engine calibration may be necessary depending on the overall performance combination. Professional installation is recommended.

Emissions Compliance

S&S Cycle lists this manifold as exempt from emissions tampering regulations under California Air Resources Board (CARB) Executive Order D-355-48 for covered 2017-2023 Milwaukee-Eight Touring and 2018-2023 Milwaukee-Eight Softail applications.

Important: This exemption applies only to the configurations and model years covered by the applicable executive order. Verify emissions compliance for your specific motorcycle and any additional engine modifications before installation.