To determine the number of Bottomless Tokens to use in your fork, start by setting proper sag. The RockShox Trailhead App can help guide you towards the best starting air pressure. If you find when running recommended sag that you bottom out frequently, consider adding a token. If you find that you consistently do not achieve full travel, consider removing a token.
RockShox forks may come installed with tokens from the factory based on chassis and travel. Check our Front Suspension Air, Oil, Tokens Specifications to see factory configuration and maximum token numbers.