Cylinder Head Porting, Antique and Hi-Performance American Motorcycles
at the SPEED SHOP
A Lee's Speed Shop Exclusive!
Bigger intake valves in Knucklehead motors has been a "speed trick" for nearly as long as Knuckleheads have been built. Here at Lee's Speed Shop, we are providing the parts to make these vintage type modifications practical.
We recently commissioned a quantity of 2.060 diameter thin stem valves to go along with our thin stem Knucklehead valve guides. Not only that, but we also recently completed a run of Knucklehead specific valve spring shims.
For more info, click on the link to your left marked “Valves”