Originally Posted by Roamer2

The LBS threw that in with purchase. It's a Greenfield "top plate" 305mm model. REI and Walmart carry them...along w/ Amazon, etc.

It has worked great & doesn't protrude or flop around off-road. I will caution that I have an XL frame & that particular model is intended for 22" & up frames. It would probably work fine on L & M frames,,,,but might need to be cut down for other applications.