S&S 55MM PERFORMANCE MANIFOLD FOR M8 FITMENT_SPORTSTER Forbidden Motorcycles introduces their NEW

Forbidden Motorcycles introduces their NEW OG Slims risers

Headset Profile (HSP)

Improves throttle response

MADE in Japan

68 MP (16:9) and an increased 135-degree field of view

S&S 55MM PERFORMANCE MANIFOLD FOR M8 FITMENT_SPORTSTER Forbidden Motorcycles introduces their NEWS&S 55MM PERFORMANCE MANIFOLD FOR M8 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