Works great for every size battery
This was a battery extension hold down for the larger lipo battery. The truck should come standard with this hold down. It works with any size battery.
Does the job I have no complaints.
All of my Traxxas and Venom batteries fit in the Traxxas 4X4 VXL so far, simply by reversing the stock Hold Down. However..I may use the TRA6727X for much larger LiPo packs in the future.