I have a 1521 2d in my flm savage and I destroy a diff every time i am out! I am going to try the new flux diff and the cen one to see the if they help. Also make sure you are using diff fluid, it makes a big difference.
FLM Extended Savage -Nue 1521 2d MMMv3 6cell E-Maxx -Flm Parts stock motors (the wife's) Slash -MM medusa 3300k 3cell 68 mph!
[B]Custom FLM Axial Crawler Losi Rammunition 1/184600k