I have just removed this kit from my Sportsman as I am turning it back to thumb control (could not really take advantage of the twist throttle as I am mainly riding technical trails).
It has it’s original box with the instructions. The kit is in good shape – I had it on since last fall only.
Installation is simple – and it is a very good modification if you mainly ride at steady speeds, on even trails, etc. It really helps with sore thumb, joints, tingling and such.
I am selling it for $40.00 + shipping (I am in Peterborough, Canada).
Here is a link with some pictures from the manufacturer:
Handy Throttle – The Thumb Throttle Converter – Photos