The Nextech Carbon Fibre moon shock suspension is the second lightest rear suspension on the market to date weighing a mere 34 pounds, the lightest is the Nextech Mono SL Flex susension that weighs in at 29.5 pounds. The Mono shock suspension is the only truly coupled suspension that maintain a constant low angle of approach throughout the motion of the suspension, this means that you stay up on top of the snow and you don't trench. This suspension also means that you keep the skis down when you are running big power which means you get to use all of your available power instead of having to back off when you need it the most.
All of the parts on these suspensions are the lightest materials possible, titanium, carbon fibre, chromoly, and 7075 alumminum, Nextech is no stranger to carbon fibre and high tech snowmobile products, they have been around for years and their products have withstood the testing of the cruelest riders in the industry, and don't forget that carbon fibre is stronger than aluminum so if you think this stuff is going to break then you are flat out wrong. Of course everything has its limits but this suspension will exceed the limits of any aluminum suspension any day.
Make sure you check out www.carbonsled.com