Compatibility (Read this before purchase) ⚠ This upgrade is only suitable for compatible handles. All LION® adjustable dumbbells purchased from November 2025 onward are prepared for this upgrade as standard. Here’s how to easily check whether your handle is suitable: Turn the handle further toward the 41.5 KG position. Can you extend/rotate the tube further without any problems until it reaches the 41.5 KG position? Then your handle is compatible. If not, then your handle does not have the 41.5 KG upgrade function and this upgrade is unfortunately not suitable. Not sure? Feel free to contact our customer service. We will be happy to check whether your set is compatible. Upgrade your 23.5 KG Adjustable Dumbbells to 41.5 KG Ready for heavier weights? With the LION® 41.5 KG Upgrade Kit, you can easily expand your existing 23.5 KG Adjustable Dumbbells to a maximum weight of 41.5 kilograms per dumbbell. You do not need to purchase a completely new set. With this upgrade, you keep your current handles and receive all the necessary parts to expand your dumbbells to the 41.5 KG version. Contents of the upgrade kit ✔ 2× LION® 41.5 KG Bases ✔ All required weight plates to expand your 23.5 KG dumbbells to 41.5 KG per dumbbell