This block off plate is part of our stock component lightweight hood kit.  CNC machined marine grade Hpde plastic has a lip on both sides to seal to the stock center section of the stock hood.  Plate is used to make a nose style air intake using your stock hood.  Plate is installed with the four stock bolts on your lower nosecone and two additional threaded inserts that come installed in the plate, a bead of silicone should be used during installation.    Blockoff works with new ascender chassis as well as the proclimb chassis