Have a look at this great video Jackson did that explains a bit about the new Gen 3 Flex Tec handguards and installing them.
New Gen 3 Rox Speed FX Flex Tec Handguard install with Jackson Hayek
ergonomics handguards racing snocross snowmobile snox
ergonomics handguards racing snocross snowmobile snox
Have a look at this great video Jackson did that explains a bit about the new Gen 3 Flex Tec handguards and installing them.