Upgrade your MJX 1/16 Hyper Go with this full alloy differential set, featuring a 45# steel gear and 6061 aluminum alloy differential case. This advanced design increases hardness by 60% compared to the original, providing significantly improved durability and performance. The product is pre-lubricated, allowing for direct installation and immediate use. Mesimsple designed this differential to perfectly match the original dimensions, ensuring an easy and precise fit. Additionally, it comes with an extended warranty, supported by a dedicated professional team to assist with any issues.