This is the ultimate battery upgrade if you have installed the Traxxas 8S Power-Up kit on your Traxxas X-Maxx or if you have the new 77086-4 model. This is for 1 pair of our 9000XL 4S 14.8V lipo packs. One left side and one right side custom wired to fit the X-Maxx battery compartment perfectly. No tray modifications required.
There is no better pack than this if you're looking for the ultimate combination of power and run time. Long run times while holding incredible voltage under load.
These packs will make your brushless 8S Traxxas X-Maxx scream! If you're looking for an insane amount of power, these are the packs for you!
Two Lipo 9000mah - 14.8v packs