Front shock shaft extensions prevent the front shocks from "topping out" and limiting your downward wheel travel. This is serious problem with lifted T3s, both 2wds and Syncros. When the suspension is limited by the extension of the shock, the ride quality suffers and it can cause damage to the shocks resulting in failure. 

Also, some shocks, like Konis, are a bit shorter than others with increases the problem and limits your downard wheel travel even more. So if you have ever wanted to run Konis on a lifted 2wd, these will definitley allow you to do that. 

Made in the USA from nickel plated high strength steel, not stainless that is weaker and can gall.

M10x1.0 thread pitch fits Koni, Sachs, etc. DOES NOT FIT BILSTEIN SHOCKS