【Fit for】:The RC Gear Set Upgrades for 1/10 Slash 4x4,Rustler 4x4,Stampede 4x4(VXL),Hoss 4x4(VXL),Slayer 4x4,Slayer Pro 4x4,T-MAXX,XO-01,Summit,Revo. 【Made of High-quality Material】The RC upgrades adopts harder 45 # steel, which is not easy to be damaged, stronger, more stable, wear-resistant, environmentally friendly and has a long service life. 【Precision Manufactured】:The RC gear set has precision-made gear teeth, stable and consistent performance and low noise. 【Easy to Install】:The RC Hops Up can be directly installed to replace the old or broken differential,do not need any modification.Please stick screw glue on any metal-to-metal joint to make the product more stable. 【Kindly Reminder】Please stick screw glue on any metal-to-metal joint to make the product more stable.Especially in the position of various screw holes.So that the screw is not easy to be separated from the upgrading fittings. RCHuiWow RC 13-37T Differential Gear Assembly Upgrades Part for 1/10 4x4 Slash Rustler Stampede Hoss Slayer T-MAXX XO-01 Summit Revo,Steel Front Rear Gearbox Helical Gears