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 What does each click of Adjustable Hydraulic Bottom Out do for the feel of my RockShox Super Deluxe Coil? Can I upgrade my current RockShox rear shock to Hydraulic Bottom Out? What is the difference between the RockShox DebonAir+ Linear air can and Progressive air can? How does Hydraulic Bottom Out work? Does Hydraulic Bottom Out provide any degree of rebound damping as the shock begins to rebound after bottom out?