Gen 4 Reinforcement Upgrade Kit Already own a set of PoCa Marine Gen 4 Collars? Upgrade them with our latest reinforcement system to increase rigidity and prepare your ski for heavier accessories. The kit includes our latest lower reinforcement brackets, an adjustable support rod and all required mounting hardware for a straightforward installation. Benefits ✅ Increased collar rigidity ✅ Added strength for demanding conditions ✅ Genuine PoCa Marine upgrade ✅ Compatible with existing Gen 4 Collars Please note: If you're adding a JFM Spot Lock system, the required upper reinforcement brace is already included with your Spot Lock purchase. Not sure which version of collars you have? No problem. Simply email a few clear photos of your collars to pocamarine1@gmail.com and we'll identify your collar version and recommend the correct upgrade for your ski.