【Compatible with】:The upgrade parts for 1/18 Granite Grom Mega 380,Typhon Grom Mega 380,Mojave Grom Mega 380 Rc Car.Vehicle code：ARA2102.ARA2106,ARA2104 【High precision】:The gear set is with precision manufactured gear teeth for smooth, consistent performance,they works with low noise. 【Long-lasting Performance】:Made of high-quality steel material, long service life for these gears,The gears are CNC machined, Hard anodic oxidation and anti-rust treatment on gear surface, good machining made them roll smoothly; 【Easy to Install】:The hops up drive shaft upgrades are easy to install, which is very suitable for replacing old or damaged parts and improving the overall performance and durability. 【Special note】:In the position of various screw holes, screw glue is applied, so that the screws are not easily separated from the upgrade accessories. RC 30T 0.8Mod V2 Upgrades Part Steel Metal Main Gear & Differential Case for 1/18 Granite,Typhon,Mojave Grom Mega 380 Rc Car. Assembled Differential Hops Up,2PCS,Black(ARA311177V2)