http://www.exotekracing.com/sc10-4x4...-front-clutch/
Many people are confused about the Exotek "front locker". It is installed on the slipper assembly eliminating the slipper pad for the front wheels. Now any adjustment of your slipper only effects the rear wheels. It by no means "locks" the front diff. I installed one on my truck, as did my friend, and ran 30k in the front diff and 7k in the rear running on a low traction, "real dirt", 1/8 scale track. The truck squared up and accelerated better out of the corners and braked much better. I paired this with RCShox Garodiscs for the remaining slipper pads. However, I plan on upgrading this truck from backup to give it more time on the track (my Tekno is still my best girl, but I do really enjoy the Associated). and I plan on getting the newest c-diff from RCShox so the Exotek piece will no longer matter. Bottom line, if you run the stock slipper assembly, the Exotek locked front clutch piece is a great improvement over the odd slipper setup on the truck and will help the truck brake harder and later, and accelerate out of the corners with more ferocity.