IMPORTANT FITMENT NOTE
This model features a 1.8" tapered steerer, found on select eMTBs and gravity-oriented bikes for increased front-end stiffness. This is not the common 1.5" tapered steerer standard used on most modern mountain bikes. Please confirm your frame and headset are specifically designed for a 1.8" lower steerer before purchasing.
Product Description
The RockShox ZEB Ultimate is built for aggressive enduro and e-MTB riding, combining a stiff 38mm chassis, Charger 3 RC2 damper, DebonAir+ air spring, ButterCups, and integrated AirWiz pressure monitoring.
AirWiz allows riders to monitor fork air pressure through the SRAM AXS system, making it easier to establish and maintain the desired suspension setup. Independent high- and low-speed compression adjustments plus external beginning-stroke rebound provide extensive control over fork performance.
This 29-inch version features 160mm travel, 44mm offset, and 15x110mm Boost axle spacing.
Key Features
- Integrated RockShox AirWiz air-pressure monitoring
- Charger 3 RC2 damper with ButterCup
- DebonAir+ air spring with ButterCups
- Independent high- and low-speed compression adjustment
- External beginning-stroke rebound adjustment
- 38mm aluminum upper tubes
- Maxle Stealth thru axle
- E-bike approved with E-MTB designation
- Diffusion Black with Stealth decals
- Fast Black upper tubes
Specifications
- Brand: RockShox
- Model: ZEB Ultimate
- Model Code: FS-ZEB-ULT-A2
- Example Serial Number: 27T22958141
- Wheel Size: 29"
- Travel: 160mm
- Offset: 44mm
- Damper: Charger 3 RC2 with ButterCup
- Damping Adjustments: Beginning-stroke rebound, low-speed compression, high-speed compression
- Spring: DebonAir+ with ButterCups
- Air Pressure Monitoring: AirWiz
- Volume Reducer: 1/5 Tokens
- Steerer: 1.8" Tapered
- Steerer Condition: Full-length, uncut
- Axle: 15x110mm Boost
- Axle Included: Maxle Stealth
- Axle-to-Crown: 576mm
- Brake Type: Disc
- Minimum Rotor Size: 200mm
- Maximum Rotor Size: 220mm
- Maximum Air Pressure: 148 PSI
- Crown Material: Forged hollow aluminum
- Crown OD: 69mm
- Lower Material: Magnesium
- Upper Tubes: 38mm aluminum
- Maximum Tire Diameter: 770mm
- Maximum Tire Width: 81mm
- Fender Compatibility: Bolt-On Short
- Maximum Recommended System Weight: 373lb / 169kg
- E-Bike Approved: Yes
- Color: Diffusion Black with Stealth Decal
AirWiz
AirWiz electronically monitors the fork’s air-spring pressure and communicates with the SRAM AXS app. Once the rider and suspension setup are entered, the system can establish a target pressure range and provide quick pressure-status feedback.
AirWiz is a setup and pressure-monitoring system. It does not electronically control the Charger 3 RC2 damper.
Compatibility
For compatible mountain bikes designed around:
- 29-inch wheels
- 160mm fork travel
- 1.8" tapered steerer
- 15x110mm Boost front hub spacing
- 44mm offset
- 576mm axle-to-crown length
- Disc brake system
Confirm approved fork travel, headset/steerer standard, brake setup, and tire clearance before installation.
Included
- RockShox ZEB Ultimate AirWiz fork
- Maxle Stealth thru axle
- Includes only what is pictured and described
Not Included
Warranty and Notes
- 27T22958141 is an example serial number for model reference only. Actual serial number may differ.
- Professional installation and suspension setup are recommended
Condition
PLEASE NOTE:
This fork uses the less common 1.8" lower steerer diameter, not the typical 1.5" tapered standard. Please verify that your frame and headset are specifically designed for a 1.8" steerer before purchasing. This item will not be eligible for return due to incorrect fitment of the 1.8" steerer standard.
