The heavy steel coils in snowmobiles’ suspension systems make them tough to maneuver through narrow forest trails. The FX Nytro replaces those coils with nitrogen-filled shock absorbers to reduce weight and enable riders to move smoothly through tight spots and deep snow. A simple bicycle-like pump lets riders adjust pressure in all four shocks depending on their weight and how stiff a ride they want, making the vehicle truly one-size-fits-all.
$12,600; yamaha-motor.com
I don't know how you can overlook the Polaris Rush with it's innovative rising rate rear suspension. It's a fundamental change in snowmobile design. Adjustable shocks have been around for ages. Either Yamaha paid for this or the Pop Sci guys don't ride.