It Is An Aluminum Joint Cup For The Gear Differential Standardly Equipped On The BD9. It Is Exclusively Designed To Be Equipped With A Resin Protector On The Universal Shaft Side, And It Is Also Hard Anodized To Minimize Wear And Tear.
It Is Lighter Compared To The Standard Steel, Which Is Effective In Enhancing Drive Efficiency. Additionally, The Reduction In The Rotational Mass Lowers The Gyro Effect, Also Contributing To Improved Maneuverability.