Overdrive pulleys help?

[Josh1928]

This may sound silly, but what's the difference between the normal Cat SX2 diff and the overdrive diff/pulley? Pros and cons? How it works? Things like that thanks:)

[Josh1928]

Any help would be appreciated:)

[moth898]

it is ment for the front and makes the front wheels spin faster than the rear. It loosens the rear a bit allowing to make faster turns. I use it on smaller tracks that have alot s turns.

[Josh1928]

Thanks:)