Metal Front Rear Differential Gear Assembly Upgrades Part for 1/10 Big Rock/Vorteks/Granite/Senton Granite 3S BLX Senton Mega 550,1/8 Infraction/Typhon/Vendetta 3S BLX,Navy Blue (Fits For) :1/10 Big Rock 3S BLX/Vorteks 3S BLX/Granite 3S BLX/Senton 3S BLX/Granite 3S BLX/Mega 550,Senton Mega 550,1/8 Infraction 3S BLX/Typhon 3S BLX/Vendetta 3S BLX/Typhon Mega 550,Metal Front Rear Differential Gear Assembly Upgrades Part. ?High quality material?: Differential Gear Made of high-quality steel material, Hard anodic oxidation and anti-rust treatment on gear surface, long service life for these gears. ?More Durable?:The upgrades part is durable enough,improves the overall performance of the rc car.Specially designed strengthening cut-outs for increased crash resistance. ?Easy to Install?:great for replace the old or broken part.Increase overall performance and durability of your RC car. ?More Durable?:The upgrades part is durable enough, improves the overall performance of the RC car.Specially designed strengthening cut-outs for increased crash resistance. For ages 14 and up.