Now that you have your 450 helicopter you are wondering what you can do to improve it. KBDD has answered that question with the absolutly best upgrade you can get for the Align TREX 450 Version 2 and 3 (Pro) and other compatable helicopters. This kit contains paddles, dampeners and 61mm tail blades your 450 needs to become the best machine. The dampeners, tail blades and paddles all work together to give you that “lock-in” feeling with great stability. Hard manuevers before now seem easier as you are not fighting the machine. The machine is doing what you tell it to. The KBDD upgrade kit is the best money you will spend on your 450 helicopter.