E Rustler/Stampede Ext Arm CVD

That cup is the best cup for the driveshaft kit. Reason being it gives more contact on the shaft, to keep the cup from wobbling.

However with a stock plastic tranny (includes all of them) requires modification.
Our tranny requires no modifications.

What needs to be done is open up the hole in the tranny to allow room for the shoulder on the cup.

If you do not want to do any modification send me your address (jamie@fastlanemachine.com) and I will send you a cup that will work with no modifications.

I have been recieving some feedback over this and will be updating the kits to include the drive cups that work with no mod.