RockShox ZEB Ultimate B1

ZEB is built for the most extreme terrain—steep double-black runs, freeride features, and even the pedal back up if that’s in the cards. LinearXL air spring delivers a consistent and predictable ride feel backed by Adjustable Bottom Out (ABO) for end-stroke control ButterWagonTech ensures a constant supply of oil to the bushings, reducing friction and maintaining smooth performance throughout the entire service interval Charger 3.2 damper with new Rebound/Compression tunes that match LinearXL air spring, achieves virtually silent performance, keeping riders focused on the trail ButterCups technology block 20% of high-frequency “trail chatter” to reduce hand and arm fatigue SRAM Model ID: FS-ZEB-ULT-B1 Attributes Brake Type Disc Damping Charger 3.2 RC2 W/ButterCups Damping Adjustments Extl begin stroke rebnd, low speed comp, high speed comp Crown Material Aluminum Rake 44mm Maximum Rotor Size 220mm Maximum Tire Width 74.5mm Spring Adjustments Air pressure, Bottomless tokens Spring Type Linear XL W/ButterCup Steerer Tube 1-1/8''-1.5'' Steerer Tube Material Aluminum Lower Tubes Material Magnesium Stanchions Material Aluminum Stanchions Diameter 38mm Axle/Hub spacing 15x110mm TA e-Bike approved Yes