I think SWEDE is right. I went to a Polaris dealership and got the following slide.
part number# P139G the rest of the sticker reads-POL SS EDG*G*
'01-07, DRAGON RMK '07 +
I extended my M-10 to 144 and put these slides on. Perfect fit other than had to trim a little off the front to get the screw hole to line up. Also had cut about 8 inches off the back also