[kash]

I've posted this a bunch of times over the years

2nd and 3rd letters signify Arctic Cat

4th and 5th are model year
6-8 are type (SNW snowmobile, ATV, MPV prowler etc)
9th is a check digit
10th is the last digit of the year (9 = 2009, A=2010, B=2011, C=2012 etc)
11th is a "T" This one I don't know why, just that its always a "T"
12-17 are the "serial number"

the 11th character is the designator for the assembly plant, Cat has designated TRF as "T", and since this is the only plant that produces sleds it is a constant.....hope this helps.....:beer_cheers: