Harley Davidson Motorcycles - ATLAS Throttle LockEverything on your Harley was designed to cruise on the most beautiful roads in America everything except for the throttle thumb screw. Dont use that janky, antiquated throttle lock while flying down the road at 75mph. Trash that thing and use the ATLAS Throttle Lock instead. Youll thank yourself every time you use it. Did you know that the plastic thumb screw was originally meant to help warm up the old carbureted Harleys? The ATLAS Throttle Lock