Rock Shox Psylo Gold Isolator RC 27.5+ suspension fork

Isolator RC damping cartridge

The Isolator Damper technology is an innovative shock absorber offering riders three compression settings: Open, Pedal, and Firm. Referencing the top-tier Charger 3 damper found in our Signature Series forks, the development team utilized a damper with an internal floating piston (IFP), backed by a spring and using shim stacks, to deliver riders a consistent and predictable feel throughout its stroke. This design means that when the Isolator damper is open, oil flows freely through the damper to absorb big hits (saving your hands), the Pedal mode is supportive without harshness over successive bumps, and the Firm mode offers maximum damping to suppress bobbing for the most efficient ride possible.

The IFP design of the Isolator damper keeps air and oil separate, leading to unmatched impact response and improved consistency across the entire stroke range. The new Rebound piston controls oil flow during both compression and rebound, using shim stacks on the bottom of the piston to manage oil flow speed in both directions.

Bottomless Tokens

Bottomless Tokens allow you to easily adjust the air spring performance to best match your riding style and suspension preference. Adding the easy-to-install Bottomless Tokens changes the air spring curve so that it doesn't bottom out  after a big hit, giving aggressive riders far more options. Removing the Bottomless Tokens makes the air spring curve more linear, improving suspension feel for certain types of terrain or trail conditions and ensuring that riders who are less aggressive or lighter benefit from 100% of their fork travel.

Maxima Plush Dynamic Oil

Rock Shox's continued collaboration with Maxima Racing Oils has resulted in an improved oil, developed with leading experts in the field of performance lubrication. The oil is specially designed for the new Rock Shox fork range, where the aim was to create the perfect lubricant blend to keep your suspension fresher.