RockShox ZEB Ultimate Charger 3.1 RC2 Fork 29" A3 | 160–190mm Enduro Suspension Fork
RockShox ZEB Ultimate Charger 3.1 RC2 Fork 29" A3 | 160–190mm Enduro Suspension Fork
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Built for riders who charge harder, ride faster and demand absolute control, the RockShox ZEB Ultimate Charger 3.1 RC2 29" A3 Suspension Fork is RockShox's flagship long-travel single crown fork. Designed for aggressive enduro racing, bike park laps and hard-hitting E-MTB riding, the latest ZEB Ultimate combines unmatched stiffness with refined suspension performance to inspire confidence on the toughest trails.
At its heart is the all-new Charger 3.1 RC2 damper, delivering an expanded adjustment range for High-Speed Compression (HSC), Low-Speed Compression (LSC) and Low-Speed Rebound (LSR). Combined with ButterCups vibration damping, the DebonAir+ air spring, ultra-low friction SKF seals and a robust 38mm chassis, the ZEB Ultimate provides exceptional grip, support and control over the roughest terrain.
Whether you're racing the clock or chasing bigger lines, the ZEB Ultimate is engineered to help you ride faster, longer and with greater confidence.
Why Choose the RockShox ZEB Ultimate Charger 3.1 RC2?
- Flagship RockShox enduro suspension fork
- New Charger 3.1 RC2 damper with wider adjustment range
- Independent High-Speed Compression, Low-Speed Compression and Low-Speed Rebound adjustments
- ButterCups reduce trail vibration and rider fatigue
- DebonAir+ air spring for outstanding small bump sensitivity and mid-stroke support
- Ultra-stiff 38mm chassis for precise steering
- SKF ultra-low friction wiper seals
- Premium machined and anodised crown
- RockShox short fender included
- Available in Electric Red, Gloss Black and Slab Grey
New Charger 3.1 RC2 Damper
The biggest upgrade to the latest ZEB Ultimate is the Charger 3.1 RC2 damper, giving riders greater control and a broader tuning range than ever before.
Compared to previous generations, Charger 3.1 provides:
- Reduced Low-Speed Compression damping in the open mode for improved comfort
- Increased High-Speed Compression support when fully closed
- Greater tuning precision
- Improved traction
- Better control through repeated impacts
- More confidence at race pace
Whether you're smashing rock gardens or landing sizeable drops, the Charger 3.1 RC2 damper adapts to your riding style and terrain.
ButterCups Technology
RockShox's innovative ButterCups are designed to reduce high-frequency trail vibrations before they reach your hands.
Benefits include:
- Up to 20% less trail chatter
- Reduced hand and arm fatigue
- Improved grip on rough terrain
- Increased comfort during long rides
- Greater front-end control
- Enhanced rider confidence
Perfect for long enduro stages, technical descents and demanding bike park sessions.
DebonAir+ Air Spring
The DebonAir+ air spring offers an exceptional blend of plush small-bump sensitivity with increased mid-stroke support.
Key benefits include:
- Improved traction
- Increased ride height
- Better support on steep terrain
- More predictable handling
- Excellent bottom-out resistance
- Fully tunable with volume tokens
The result is a fork that feels supple over roots and rocks while remaining composed under aggressive riding.
Stiff 38mm Chassis
The ZEB Ultimate's 38mm aluminium upper tubes provide outstanding stiffness for precise steering and confidence-inspiring handling.
Designed for:
- Enduro racing
- Bike park riding
- E-MTBs
- Freeride
- Technical alpine descents
The chassis delivers exceptional steering accuracy without excessive weight.
Premium Low-Friction Performance
Every component has been designed to maximise suspension sensitivity and long-term durability.
Premium features include:
- SKF ultra-low friction wiper seals
- New low-friction bushing package
- Maxima Plush Dynamic Suspension Lubricant
- Premium machined and anodised crown
- Reduced breakaway friction
- Smoother performance straight out of the box
- Longer service life
Compatible With Standard Hubs
Included bolt-in Torque Cap adapters allow compatibility with both standard Boost hubs and Torque Cap hubs, giving riders greater flexibility when upgrading or building a bike.
Included Features
- Charger 3.1 RC2 Damper
- ButterCups Vibration Dampers
- DebonAir+ Air Spring
- RockShox Short Fender
- Bolt-In Torque Cap Adapters
- SKF Wiper Seals
- Maxima Plush Dynamic Suspension Lubricant
Specifications
| Specification | Details |
|---|---|
| Model | RockShox ZEB Ultimate A3 |
| Wheel Size | 29" |
| Travel | 160mm / 170mm / 180mm / 190mm |
| Damper | Charger 3.1 RC2 with ButterCups |
| Compression Adjustments | High-Speed Compression & Low-Speed Compression |
| Rebound Adjustment | Low-Speed Rebound |
| Spring | DebonAir+ with ButterCups |
| Upper Tubes | 38mm Aluminium |
| Axle | 15 x 110mm BOOST™ |
| Offset | 44mm |
| Volume Tokens | 0/4, 1/4 or 1/5 depending on travel |
| Steerer | Tapered 1.5" |
| Colours | Electric Red Gloss / Gloss Black / Slab Grey Matte |
| Weight | Approx. 2341g |
Available Travel Options
Choose the travel that best suits your riding style:
- 160mm – Aggressive Trail
- 170mm – Enduro
- 180mm – Long Travel Enduro
- 190mm – Freeride & E-MTB
Ideal For
The RockShox ZEB Ultimate Charger 3.1 RC2 is perfect for:
- Enduro racing
- Bike park riding
- E-MTBs
- Freeride
- Technical mountain riding
- Aggressive trail bikes
- Riders demanding maximum adjustability
- Premium custom bike builds
Frequently Asked Questions
What is new about the Charger 3.1 RC2 damper?
The Charger 3.1 RC2 offers a wider tuning range with improved High-Speed Compression, Low-Speed Compression and Low-Speed Rebound adjustments, giving riders better comfort, support and traction across a wider variety of terrain.
What are ButterCups?
ButterCups are small vibration-damping units built into the fork that reduce high-frequency trail vibrations by up to 20%, helping reduce hand fatigue while improving comfort and control.
Is the ZEB Ultimate suitable for E-MTBs?
Yes. The ZEB Ultimate is an excellent choice for modern E-MTBs thanks to its incredibly stiff 38mm chassis, robust construction and outstanding suspension performance.
Does the fork include a mudguard?
Yes. A genuine RockShox short fender is included with the fork.
Which wheel size is this fork designed for?
This version is designed specifically for 29-inch wheels.
What hub spacing does it use?
The fork uses a 15 x 110mm BOOST™ axle and includes bolt-in Torque Cap adapters for compatibility with both standard Boost and Torque Cap hubs.
Why Buy the RockShox ZEB Ultimate Charger 3.1 RC2 Fork?
The RockShox ZEB Ultimate Charger 3.1 RC2 is one of the most capable long-travel mountain bike forks available today. Combining the latest Charger 3.1 RC2 damper, ButterCups vibration damping, DebonAir+ air spring, ultra-stiff 38mm chassis and premium low-friction internals, it delivers unmatched control, comfort and confidence for riders pushing their limits. Whether you're racing enduro, charging bike park lines or upgrading your E-MTB, the ZEB Ultimate is engineered to perform at the highest level.
Who's it for?
Who's it for?
Designed for gravel racers, endurance riders, and bikepackers seeking wireless precision, wide-range gearing, and dependable braking in a simplified 1× platform.
Want this professionally fitted?
Want this professionally fitted?
The Bike Lab offers expert installation and servicing in and around Surrey and West Sussex. Book today, enquire at TheBikeLabWorkshop@gmail.com or view our services.
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FAQ
How long does a Gold Service take?
As this is a full strip down and rebuild, it usually takes slightly longer than our other services. Most Gold services are completed within 1 to 2 weeks depending on workload and any additional parts required.
Is this service suitable for older bikes?
Yes. Older bikes often benefit the most from a full strip down, especially if they have not had a thorough service in some time.
Will parts be replaced automatically?
No. We will always contact you before replacing any worn or damaged parts. No additional work is carried out without your approval.
What is the difference between Silver and Gold?
The Gold Service includes a full strip down and rebuild, along with headset and bottom bracket removal and re-greasing. Silver focuses more on adjustment, wheel truing, and drivetrain cleaning.
How often should I book a Gold Service?
For regularly ridden bikes, once a year is a good guideline. If you ride in harsh conditions or high mileage, you may benefit from it more frequently.