RB Products Head Button
This item is discontinued and no longer available for purchase. You may want to search our site for a similar item.
This is a replacement Standard head button for RB Concept Square Stroke .21 engines, such as the Econo 3-port, S5, S7II and WS7II family of engines, and is also included with the Hobby 9, Junior 9 and Series 9 family of engines. This is the same as the head button that comes in the box with these engines.
This product was added to our catalog on December 27, 2005.