Check the listing for details. Old Skool Vintage Traxxas 4007 TRX Pro Nitro .15 Engine w/ Pipe & Pull-Start. Condition: Used. Listed at 92.99 USD. Old Skool Vintage Traxxas 4007 TRX Pro Nitro .15 Engine w/ Pipe & Pull-Start - Used and dirty, shows normal signs of wear and tear, but pull-start works and engine has good pop