This is an aftermarket Extended lever designed and manufactured by me, using a 3d printer and high temperature filiment.  
I was tired of my wrist popping from using the hard to use, small stock forward and reverse lever so I designed and manufactured a few prototypes and this model was by far the best. You can still take off the seat while the lever is installed and it is sooooo much easier to use than the stock lever. 
Enjoy!