【Fits For】:Speed Up Transmission Module Set 35T Front Rear Differential & 14T Main Gear Upgrades Part,for 1/10 Bigrock 3S BLX Granite 3S BLX Senton 3S BLX Vorteks 3S BLX Kraton 4S BLX Outcast 4S BLX,1/8 Typhon 3S BLX Vendetta 3S BLX Infraction. 【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. 【Long-lasting Performance】: The rc car upgrades parts highly increase the strength and precision.