41-tooth large bevel gear for center differential is machined from special HUDY steel material which includes been specifically developed for gear-type products, additionally hardened and accuracy ground to match the tightest tolerance requirements for perfect fit with the diff outdrives. The gears are separately machined on a precision German gear machine and every gear is individually tested, examined, and run in. The diff gear is then laser engraved with "Active 41T" for effortless and instant recognition.
Our unique heat therapy makes the gear very difficult and strong not just on the surface and inside core, thus give the gear an extraordinarily-long lifespan with suprisingly low use comparing to standard gears.