Item number: 86634
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The RockShox ZEB Ultimate RC2 DebonAir+ Boost Suspension Fork for 29" wheels is at home on enduro trails with vibration-absorbing ButterCups


The RockShox ZEB Boost 29" suspension fork for enduro bikes comes in the Ultimate configuration with Charger 3 RC2 damper and DebonAir+ air spring, which are supported by ButterCups. The completely independent adjustment of high and low-speed compression damping enables precision tuning and saves you from having to calculate the interplay. The DebonAir+ air spring impresses with excellent response and confidence-inspiring control. Another highlight are the ButterCups, which absorb 20% of those small but incessant vibrations that make life difficult for your arms and hands on long, bumpy trails. The Ultimate bushings are 53% longer than the previous model and have a higher overlap area for low-friction operation. Pressure relief valves allow the air pressure in the immersion tubes to be easily adjusted to the environment.

Guidelines for Replacing E-bike Components:

Before you replace components on your e-bike, please read through the guidelines for component replacement for CE-marked e-bikes/pedelecs with pedal assistance.

Specifications:

Application:
Enduro
Wheel Size:
29"
Suspension Type:
air
Travel:
160 mm, 170 mm, 180 mm, 190 mm
Steerer Tube:
1 1/8" - 1.5" tapered
Axle Type:
thru-axle
Wheel Standard:
15 x 110 mm (Boost)
Brake Mount:
disc PM8 (direct mount 200 mm)

Technical Information:

Offset:
44 mm
Steerer Tube Length:
265 mm
Steerer Tube Diameter (Stem):
28.6 mm
Steerer Tube Diameter (Crown Race):
40 mm
Over Locknut Dimension:
110 mm
Stanchion Tube Diameter:
38 mm
Steerer Tube Material:
Aluminium
Crown Material:
Aluminium
Stanchion Tube Material:
Aluminium
Lower Tube Material:
magnesium

Adjustment Options:

Compression:
low-speed, high-speed
Rebound:
low-speed
Suspension Stiffness:
air pressure adjust
Remote:
no
Travel Adjustment:
no

Approved For:

Tyre Size (max.):
29 x 3.1"
Note:
For individual tyres, tyre clearance must be checked with the fork fully compressed and the tyre fully inflated. It should be at least 6 mm all around.
Rotor Size (max.):
220 mm

Features:

  • Charger 3 RC2 damping with fully independent adjustment of low and high speed compression through IFP design enables precise tuning
  • ButterCups for smooth riding absorb 20% of lighter, high-frequency vibrations and thus prevent fatigue
  • DebonAir+ air spring with more volume than DebonAir absorbs smaller bumps even better and at the same time stands higher in the suspension travel
  • reduced friction due to longer Ultimate bushings than the previous model with higher overlap
  • pressure relief valves release excess air pressure in the immersion tubes at the push of a button, adjustment of the air pressure to the environment
  • 38 mm standpipe diameter for high rigidity
  • low-friction SKF wiper seals for high durability and good suspension behaviour
  • with Maxima Plush Dynamic Suspension Lube for low friction and good durability
  • crown adjust
  • torque cap dropouts for increased stiffness
  • with screw-on torque cap adapters for simplified use with standard end caps
  • also suitable for e-bikes
  • fork crown outer diameter: 59 mm

Models:

160 mm / 1.5 tapered / 15 x 110 mm / 44 mm:
Travel:
160 mm
Offset:
44 mm
Axle to Crown:
576 mm
Model ID:
FS-ZEB-ULT-A2
Manufacturer Numbers:
00.4020.819.011 (gloss black), 00.4020.819.015 (grey)

170 mm / 1.5 tapered / 15 x 110 mm / 44 mm:
Travel:
170 mm
Offset:
44 mm
Axle to Crown:
586 mm
Model ID:
FS-ZEB-ULT-A2
Manufacturer Numbers:
00.4020.819.010 (gloss black), 00.4020.819.014 (grey)

180 mm / 1.5 tapered / 15 x 110 mm / 44 mm:
Travel:
180 mm
Offset:
44 mm
Axle to Crown:
596 mm
Model ID:
FS-ZEB-ULT-A2
Manufacturer Numbers:
00.4020.819.009 (gloss black), 00.4020.819.013 (grey)

190 mm / 1.5 tapered / 15 x 110 mm / 44 mm:
Travel:
190 mm
Offset:
44 mm
Axle to Crown:
606 mm
Model ID:
FS-ZEB-ULT-A2
Manufacturer Numbers:
00.4020.819.008 (gloss black), 00.4020.819.012 (grey)

Contents:

  • 1 x RockShox ZEB Ultimate RC2 DebonAir+ Boost 29" Suspension Fork
  • 1 x RockShox Maxle Stealth thru-axle
  • 1 x RockShox fender
  • 2 x RockShox bottomless tokens
  • 1 x star nut
  • 2 x RockShox end cap adapters
  • 2 x bolts

Weight:

  • gloss black/190 mm / 1.5 tapered / 15 x 110 mm / 44 mm: 2341 g

Models:

  • gloss black/160 mm / 1.5 tapered / 15 x 110 mm / 44 mm, in stock
    769.47€
  • gloss black/170 mm / 1.5 tapered / 15 x 110 mm / 44 mm, out of stock
    734.85€
  • gloss black/180 mm / 1.5 tapered / 15 x 110 mm / 44 mm, out of stock
    665.60€
  • gloss black/190 mm / 1.5 tapered / 15 x 110 mm / 44 mm, in stock
    769.47€
  • grey/160 mm / 1.5 tapered / 15 x 110 mm / 44 mm, in stock
    769.47€
  • grey/170 mm / 1.5 tapered / 15 x 110 mm / 44 mm, out of stock
    760.82€
  • grey/180 mm / 1.5 tapered / 15 x 110 mm / 44 mm, out of stock
    648.29€
  • grey/190 mm / 1.5 tapered / 15 x 110 mm / 44 mm, in stock
    769.47€

Customer Reviews (1)

5

Customer Reviews (1)

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Give us your opinion on this product.

by Alexander K.  on 24.10.2022
verified purchase

Habe die neue ZEB Ultimate als Ersatz für meine 2022 Lyrik Select verbaut. Problematik bei dieser war m.E. die geringe Steifigkeit der 29" Version. Die Zeb konnte hier deutlich Abhilfe schaffen. Das Fahrverhalten ist nun deutlich 'schärfer'.

Pro:
+Ansprechverhalten bisher ohne Vergleich
+Beiliegender, teilintegrierter Fender
+low/highspeed Compression Einstellung mit Skala zur Einstellung von Absolutwerten
+Vorgabewerte für Luftdruck sehr nah an bisheriger Vorliebe

Con:
- Sag Skala auf dem Tauchrohr fehlt leider (Einstellen wieder lästig mit Zollstock)
- Gewicht

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