If you’ve got a Super E or G carb on your Harley, you know that idle speed fluctuates — you always seem to have to adjust the idle for cold-starting, then knock it back a little as your bike warms up. Up until now, you probably kept a flathead screwdriver handy, but now you don’t have to, because the All Thumbs can be manipulated by hand. (But they do have a handy slotted top, too, in case you want to use your faithful screwdriver.) They’re handmade one at a time by a motorcycle miscreant in Pennsylvania on Lemmy Mountain. This is probably the most useful modification you can make to your S&S carb. Try one out, and see if you don’t agree with us.
“All Thumbs” Idle Speed Screw For S&S Carburetors (Standard Brass)
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