Rank-Up Tool

Rank-Up Tool is a Card in Asphalt Xtreme. It is the rarest Tool Card in the game and often the bottleneck for further upgrades of a vehicle.
Althrough it is sorted under Class-S Cards in the inventory, it is needed for upgrades of all vehicles, mostly at certain upgrade levels divisible by 5, starting at level 15.
== Availability ==
The Rank-Up Tool is the only Tool Card that cannot be bought at the Black Market. It is only obtainable from Boxes and some Exclusive Bundles, for example the .