I just stuffed a 2" Camoplast Challenger under an '02 Edge RMK tonight and I can't see how you will get a 2.4" in there without smaller drivers or dropping the chaincase. This sled has 1600 miles on it with the stock Polaris 2" track and it has black rubber streaks down about 1/3 of the tunnel.
Maybe pull the chaincase to get the 2.4 in there? I had a heck of time getting the track teeth to pop over the drive teeth even with the 2".
sled_guy
I have done it both ways, first ran stock 9 tooth drivers with a 159 x 2.4" track. It bogged down after a bit of time on a steep and deep pull.
There is only 1/8 " clearance from cooler to the track.... so I am sure that there is some drag due to snow build up. (also heavy load on engine with this track)
I decided to go to 8 tooth drivers..... 4 of them not just the center two, I was afraid it may ratchet too easily with one less tooth engaged underpower.
Also with the 8 tooth driver you now have clearance and a gear down of approx. 12%.
Either way you will need to gear down quite a bit because there is now a lot more grip with a longer and deeper lug. (load up the engine)
BTW talk to tracks USA and ask them what tracks do the like for the steep and deep and they will say the poo OEM 2.52 pitch 2.4" lug is one of the best deep snow tracks out there.
My 06 900 166" proves it.
I will report after my ride tomorrow.