As far as customizations go, there are liveries and emoticons to unlock and customize for your character and kart as well.
There are plenty of characters and character variants as well as karts to collect and unlock but each one is purely cosmetic. While some players may contest that making every character and kart similar to one another in terms of performance delimits variety, it is also a strong means of promoting skill as the basis of performance instead of spending capacity. Karts in other kart racing games have different rarities that determine their stats while characters can have different perks, with some having better buffs than others. KartRider: Drift strays from conventional kart games on mobile, including its previous incarnation, KartRider Rush+, by making every character and every kart equal.
