57T 0.8Mod Slipper Gear with 3.175mm Pinions Gear 15T 16T 17T RC Gears Upgrades Part for 1/10 Arrma Granite Senton Big Rock Vorteks 3S Blx Mega550, Kraton Outcast 4S Blx, 1/8 Typhon 3S,Black 

1/10 Arrma Granite 3S Blx Senton 3S Blx & Big Rock 3S Blx, Vorteks 3S Blx, Kraton 4S Blx, Outcast 4S Blx, 1/8 Typhon 3S,Replace ARA310948 ARA311034 ARA310949