We at Patrick Custom Carbon are making a carbon fiber rear tunnels for the 2012-2013 Arctic Cats. It saves a couple pounds of weight BUT you will see a HUGE weight savings in snow/slush build up under the sled caused by the heat exchangers. Carbon fiber does not conduct cold so there is very little if any snow sticking to the tunnel. The Carbon fiber tunnel will allow you to stand on the rear of the tunnel so you can carry extra fuel or what ever you like resting on the tunnel. Easy to install just drill out approx 100 pop rivets and install the Patrick Custom Carbon tunnel in the exact place of the stock rear tunnel. Tools needed are pop rivet gun. We will send the 100 alum rivets and washers. Plus it just looks cool. Go to our web site and see me standing on the tunnels.