They are four piece 15' rods with a 1' parallel section at the top end of the butt section. You remove this to reduce the rod down to 14'. Shimano have done more than the odd 15' - 17' rod with the same configuration. I have a couple of these. The Speedmaster Multi Match has Speedmaster Multi on the side of its tube and the product code on the top of the tube opening. However, the rod itself has "Speedmaster Multi Match" and the product code on it.
Looking at the Aspire Ultra Match rods in the 2016 catalogue, it shows three models, one of which is definitely a "multi". It's a 15/17' model. A fixed length 13 or 14' model having "multi" on its tube but not the rod itself sounds like it might be a bit of a cock up by the manufacturer. I wonder whether the product codes may have caused some confusion. The 13' is ASU13MFL, the 14' is ASU14MFL and the 15/17' is ASUM1517MFL. I take these as
ASU = Aspire Ultra.
ASUM = Aspire Ultra Multi (length)
13, 14 and 1517 = length in feet.
MFL = Match Float.
I wonder whether someone has taken the suffix "M" to mean "Multi" rather than "Match". That may explain a fixed length rod having Multi on the tube and not the rod. There's certainly no mention in the catalogue of "multi" with regards to the 13 or 14' models