This is an optional OFNA Shaft Start Back Plate System. This back plate system is compatible with SH, Force and XTM .21 through .32 size engines, as well as Picco .26 and .27 engines. Use this back plate to convert your pull start engine to use the OFNA Shaft Start or HPI Rotostart systems.
This product was added to our catalog on September 20, 2005
Friday, Jan 25 2008 (about 13 years ago)
OFNA Shaft Start Back Plate System (Force/SH/Picco/XTM)
This backplate will not work on the Picco .28 or any other motor in an HPI Savage SS .25, the spinner is in the wrong location and the supplied screws are the wrong size. Im sure it works fine for other applications, just not for the Savage.