The RockShox ZEB Ultimate is a 38 mm enduro fork with the Charger 3.1 RC2 damper, a DebonAir+ air spring, and ButterCups. This one is for 29 inch wheels with 160 mm of travel.

What it's for

ZEB is RockShox's fork for enduro racing and aggressive riding, built on a stiff 38 mm chassis. It also suits electric mountain bikes.

How it works

Charger 3.1 RC2 damper: separate high speed compression, low speed compression, and low speed rebound adjusters, with a wide range so you can tune for comfort or support.

DebonAir+ air spring: an aluminum piston and tuned positive and negative chambers. RockShox says it gives a soft feel on small bumps, more support through the travel, and a higher ride height.

ButterCups: rubber pucks at the bottom of the damper and spring shafts that block about 20% of high frequency trail chatter before it reaches your hands.

SKF wiper seals and Maxima Plush fluid keep friction low.

Compatibility

• Wheel: 29 in
• Axle: 15 x 110 mm Boost, Torque Cap compatible
• Steerer: 1.5 in tapered
• Max rotor: 220 mm
• How to check yours: confirm your frame's recommended fork travel and headset standard

Setup and installation

• Set air pressure and damper clicks with the RockShox TrailHead app
• Tune progression with Bottomless Tokens

Care and service

• Lower leg service: every 50 hours of riding
• Damper and spring service: every 200 hours (2014 and newer forks)
• Intervals are a guideline. Wet, dusty, or hard riding calls for service sooner

Specs

• Travel: 160 mm
• Stanchions: 38 mm
• Damper: Charger 3.1 RC2
• Spring: DebonAir+
• Color: Electric Red
• Part number: 00.4021.075.023

Pairs with

• RockShox Zeb 200 Hour Service Kit
• RockShox 38mm Dust Wiper Seal Kit