How does Hydraulic Bottom Out compare to Tokens? Tokens affect the spring rate, making the spring curve ramp up at the end of the travel. Hydraulic Bottom Out only affects compression damping in the last 20% of travel and has no effect on the spring rate. Related articles Can I change between the RockShox DebonAir+ Progressive and Linear air cans? Can I upgrade my current RockShox rear shock to Hydraulic Bottom Out? What is the difference between positive and negative Token tuning in RockShox DebonAir+ rear shocks? What is the difference between the RockShox DebonAir+ Linear air can and Progressive air can? What does each click of Adjustable Hydraulic Bottom Out do for the feel of my RockShox Super Deluxe Coil?