Här kan ni få något att bita i, frågan bara hur mycket som är bullshit.:
"This is on SnoWest: ( I don`t really believe it as it says the Rush is no more but found it interesting)
Lots of pretty big changes for their 60th anniversary.
Four piece tunnel. Aluminum in middle where heat exchanges mount. Top corners an L-bar that carbon fiber sides mount to. Carbon goes down and bends for the boards (same aluminum ones they have on the pros) mount to. Rolled edge attaches to the tunnel similarly as it currently does. Tunnel extension is all carbon fiber. From what I am understanding, this design saves no dry weight, but they're going to be playing up the wet weights. As the Rush is no more, this new tunnel/bulkhead design is actually going to be shared with the new short tracker Pro-Indy and Switchback XCR. Non-pro sleds will still have all aluminum tunnels.
Speaking of short trackers, new "in tunnel" rising rate rear suspension. Partially an R-Motion knock off, with more linkage going on so the front arm is also rising rate. RMK's might get a version of this, but very much "in testing" still and might be a 2016 thing - won't know if it gets the greenlight until official launch - they have a third design that was "the next step up" from a T-motion that was in testing for last 3 years, even got up to manufacturing testing, but failed at last minute because it just didn't work better than the existing suspension - particularly with this new rising rate skid on the horizon - it hit the drawing board. The big thing is that the "Pro" lines are all Snow check only and limited numbers.
RMK hood and styling are the same, but the new Indy gets a bit of a facelift. Little bit "inspired" by the RZR's I think, with the "fenders" and new LED headlights, but I guess it blocks wind for the easterners. Again, the bulkhead and a-arms are mostly unchanged. Polaris is trying power steering on the two-up sleds.
The 800 is making more power, it's actually an 850 now with a new bottom end. Injection system is new, but layout I think looked the same? Not much for details, very WIP still and fairly low on hype just yet. The big news is two fourstrokes... The RZR 1000 gets put into a sled and guess what! It's decent 600 cc class power, comparable to the cat 1100 but *lots* lighter. Lighter than the Doo 900 with more power is their tag line. The other fourstroke is the 570 rzr motor into a sled to replace the fan cooled 550 (mostly for European markets and asia) work and touring type sleds. Apparently Polaris can build the 570 fourstroke themselves, EFI and all, for as cheap as it is to ship the 550 fanner from Fuji and with rising EPA requirements the fanner's gotta go. (This years proliferation of 550's was a parts bin clean out.)"