Handy aluminum plate bolts directly to your HPI ignition and allows for simple pull starting. Just carry a short piece of rope or an old lawn mower rope. Now you can finally ditch those starter shoes everyone hates to use.
Internal rotors might need a little longer hardware and simple spacing to get going but nothing bad.
Works on both clockwise rotating engines or counter-clockwise rotating engines.
Be sure to use thread locker on the bolts so it doesn't back out on you!