The wife and daughter both ride 2020 RMK PRO 600 155. The 600s are great for lighter less aggressive riders, they weigh about 120 with gear, as they are easier for them to control. We ride in the 5,000 to 8,000 elevation of central Idaho and find the RMK PRO 600 155 to be a great sled. The 600 has no problem spinning the 155 - 2.6" track.
The RMK Khaos Matrix Slash 650 with the 155 2.75" might be a real sweet spot for this coming season.
Don't look for any great fuel savings, the 600s use almost as much fuel as the 850s.
Just my $.02
Do your 2020’s have a series 2.6 or series 5 2.4 track? The sled we have for my wife is a 2020 and it’s a series 5 155 2.4”.
I think I am going to put my QD2 on that sled. It could stand to have a little more bottom end quickness.
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