hardpacked snow and ice are 2 different things.Example with my 600 and I am running dual carbide arrow skis with shaper bars..(more resistance).I could only hit 140 k/h on hard packed snow..but more on ice conditions..where snow has melted abit from warm temps and froze again..am able to get to a tad under 160 k/h.
Same with the SRX's..even worse..on hard packed snow maybe can get 100 to 105 mph,on more ice conditions can easily bury needle,less resistance on track..clutches shift more efficently.Can tell by the black marker I put on the primary..belt has climbed higher..thus ratio changes and more speed.
When guys say they get 110 plus on radar runs..it is because ice is smooth,their tracks are not heavy lugged,they run single crabide skis,they have their suspensions lower to the surface,etc,there is less resitance to slow you down..but do that run and in the middle hit 2 " packed snow..your speedo will drop instantly.
When it comes down to it..you can't be set up for both worlds.Get 2 srx's..one for ice and the other set for snow..problem solved..lol