Fixing and Upgrading Your Harley Intake Manifold

If you've ever noticed your bike idling a bit rough or popping on deceleration, there's a good chance your harley intake manifold is trying to tell you something. It's one of those parts that usually goes unnoticed until it starts causing trouble, but it plays a huge role in how your V-twin actually breathes and performs. Whether you're chasing down a pesky vacuum leak or looking to squeeze a few more ponies out of a Stage IV build, understanding how this piece of hardware works is pretty essential for any owner who likes to do their own wrenching. ...

February 24, 2026 · 6 min · Grey Mgrdechian