This is a pair of Tekno RC M6 Driveshaft Lightened Drive Cups for the Front/Rear of the Slash/Stampede 4x4 and Slash 2WD Rear. Tekno RC took their legendary M6 axles and made them better by adding lightened outdrives. These now come standard in the M6 kits (TKR1951X, TKR6851X, TKR6852X). They are also available separately as a new option for current users.
CNC machined from steel, lightened, then hardened for durability. These are for the front or rear end of your Slash/Stampede 4x4 as well as the rear of the Slash 2WD. Use the stock M3 screw pin for installation (Traxxas part number TRA6828X).