Track System Reinforcement Plates Reinforce your boat's track system and protect your gunnel from the stress of heavy equipment with our track backing plates. These plates are vital for anyone mounting gear like Dipsy rod holders or downriggers, as they provide critical reinforcement to the mounting holes underneath. Each backing plate is made from solid, aircraft-grade aluminum and measures 3.5" x 2.5" x .25", offering exceptional durability and support where you need it most. Ensure your setup is secure and stable—reinforce your track system for peace of mind on the water. Listed below are the amount of backing plates required for each of our various length of track we offer: 12" Track - (3) Plates 18" Track - (3) Plates 24" Track - (4) Plates 30" Track - (4) Plates 36" Track - (4) Plates 48" Track - (5) Plates 60" Track - (6) Plates 72" Track - (7) Plates 83" Track - (8) Plates Due to the hole spacing on the 4" and 6" tracks, backing plates can not be utilized.