S&S Cycle CNC Ported 55mm Performance Manifolds

S&S Cycle CNC-ported 55mm high performance manifolds are black powdercoated aluminum intakes designed for 2017-23 Harley-Davidson® Milwaukee-Eight (M8) engines. They replace the stock plastic manifold, improving airflow and atomization to add 3–5 hp.

Key features:

* 5-Axis CNC-ported: Precision-machined for consistent shape and maximum flow efficiency
* Improved fuel atomization: A specially textured finish encourages better fuel dissipation and air mixture
* Durability: Made from T6 heat-treated cast aluminum for superior strength, compared to the factory plastic intake
* Compatibility: Fits all 55mm throttle bodies and is compatible with both stock and ported cylinder heads
* Performance upgrade: Essential for big-bore engines, offering increased airflow for higher performance demands
* Easy installation: Includes the required intake seals
* These manifolds are designed to improve throttle response and power for performance-oriented M8 builds
Show Less