Kokiya Center Differential Differential Replacement Spare Part RC Car Differential for.This complete metal center differential upgrade kits is suitable for Hoss 4X4 , 4X4 V XL, 4X4, Slash 4X4 , Slash 4 X4 Ultimate, Slash 4x4 , Slash 3 x3 and 3X3 models.The center differential parts are made of steel, which is more sturdy than stock parts and suitable for high power ESC/motor systems.Steel center differential gear kits help replace the standard clutch in your vehicle with this high performance center differential to absorb drive shaft for improved durability.The finned aluminum housing helps dissipate heat, while metal differential gear strong large (54T) and small (32P) steel gears provide maximum durability.Central differential assembly*1 + a gear each of size 15T+17T+19T.Steel Center Differential Gear Kits Upgrade Part. Center Differential Kits Metal Differential Gear. Professional Central Differential Replacement. Stee Differential Assembly RC Car Differential. 15T 17T 19T Gear Component Rc Car Accessory.