Lynx Factory Turbo and Ski-Doo 850 Factory Turbo Boost Bands are designed to be installed inside the cold air intake pipe that leads to the turbo.  Once installed, these bands hold open the cold air intake and prevent it from collapsing.  Made from non-corrosive stainless steel, these bands come as a package of 2.  This product is easy to install and is a must-have for anyone who is running a staged-up factory turbo sled.