Differential Oil 40.000cSt (75ml)

Conquer the corners. Tame the terrain.

This is not just oil—this is your weapon of control. Ultimate Racing’s 40,000 cSt Silicone Differential Oil is engineered for serious 1/8th scale off-road warriors and even some precision-driven 1/10th on-road machines. Formulated from 100% pure silicone, it laughs in the face of temperature swings—staying stable when the heat is on and fluid when the cold creeps in.

Thicker oil means more grip, less "diff-out," and maximum drive when it matters most. And with friction-minimizing additives built in, you can count on consistent performance, lap after lap.

Real racers know: what’s in your diff can make or break your race. Choose wisely. Choose Ultimate.