They all have the same a arms. They all have the same braided brake line.
Yes the sp tunnel is black. If you see an xm chassis woth a bare to tunnel, it is a sport model and has a carbureted engine
I just had my 2014 163 with 3" track out. I had the limiters 1 hole looser than stock. I have HD torsion Springs. I weigh 275. This this was a frickin wheelie machine. I tightened up the front straps and will give her hell next trip.
page 10 here----> http://www.monsterperf.com/2013_skidoo_spring_chart.pdf
i put those springs on mine, along with a big, heavy duty zbroz rear shock valved for my fat azz. here is a side by side compared to the stock springs
you guys can kill 2 birds with one stone here. you can gain storage AND keep that snow out of the box with doo's glovebox extension. a riding buddy of mine put it on his and i thought it looked kind of dumb, but after seeing how much more room you have and how it keeps the snow out, i ordered...
I bought a used 13 last year with this same muffler on (only 32 miles on sled) . I drove it in ND for 5 miles and was getting the same codes. I did some research online and found others with the same issue while running the mbrp. I sold it and got a SLP. Didn't have 1 single code in 500 miles...