All New for 2021 ZEB Ultimate is a whole new breed of fork, designed to challenge the limits and take on the worlds toughest Enduro tracks. Going Ultimate has its advantages. Featuring an all-new stiff 38mm chassis designed with the Charger 2.1 damper, DebonAir air spring technology, SKF Wiper Seals, and Maxima Plush Fluid. RockShoxs highest performing, athlete-proven technologies matched with premium style plays. An anodized crown and ZEBs signature colour, and now Slab Grey making a rocking debut. DebonAir lightweight, highly tune-able air spring designed to offer a coil-like consistent feel throughout the travel effortlessly soaking up the smallest hits and tracking the slightest changes in the terrain. Boost Is the standard wheel and drivetrain specification that opens the opportunity for improved frame geometry with shorter chain stays, wider and stiffer suspension pivots, wider range of chainring options, as well as more clearance for bigger tyres and wider, stiffer wheels. Key Highlights Are New 38mm chassis for increased stiffness and rider confidence Highly-tunable DebonAir air spring offers a buttery smooth feel off the top Maintains a higher ride height for increased confidence in steep terrain Highest performing Charger technology Charger 2.1 RC2 damper with independent high and low speed compression Rebound adjustment Designed to reduce hand fatigue and fight unwanted friction Charger 2.1 damper increases confidence and control over every trail Ultra-low friction SKF wiper seals provide long-lasting fork performance Maxima Plush damping fluid reduces friction and silences damper noise Short fender compatible (RockShox fender sold separately)