S&S 55mm Performance Intake Manifold for Harley Milwaukee 8 M8 17-23

Big bore engines are all about the flow, more air in and more air out, anything that slows that down, robs horsepower. The factory M8 intake manifold does a decent job in stock form, but starts getting in the way when trapped between 124" and larger cylinders. The stock polymer unit is also less tolerant of the additional heat that a big bore engine can make at full noise. The solution is the new S&S high flow cast aluminum manifold and a must have for top level performance in the M8 platform. Features & Benefits High-Flow, adds 3–5 hp Must have for big bore engines CNC Machined T6 heat treated cast aluminum Replaces stock, plastic manifold Includes new rubber seal Easy to Install Exempt from emissions tampering regulations under CARB EO# D-355-39