Engineered for the most demanding riders and the toughest tracks, the RockShox ZEB Ultimate A3 excels in the world’s hardest enduros. Featuring the new Charger 3.1 RC2 damper, this fork offers unparalleled adjustability for the perfect blend of comfort, control, and speed. The robust 38mm chassis, enhanced with vibration-damping ButterCups and a DebonAir+ spring, provides the cutting-edge technology needed for the fastest split times and striking style at the start line.
ZEB Ultimate Charger 3.1 A3 Features:
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Charger 3.1 RC2 Damper: This latest evolution increases damping range and offers High-Speed Compression (HSC), Low-Speed Compression (LSC), and Low-Speed Rebound (LSR) adjustments. This configuration smooths out the roughest trails, giving riders precise control and comfort.
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ButterCups: Integrated to block 20% of high-frequency trail vibrations, reducing hand and arm fatigue, and providing more control over long rides.
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DebonAir+ Air Spring: Delivers a plush small bump response with increased air volume for additional support throughout the travel. This spring design ensures higher ride height and greater confidence on steep terrain.
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Maxima Plush Fluid: Developed with top racers, this fluid minimizes friction, reduces suspension wear, and ensures a consistent feel across all temperatures, enhancing overall performance.
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Bottomless Tokens: Allow easy customization of the air-spring curve to resist bottom-out on big hits for aggressive riders, or to make the suspension more linear for less aggressive front-end riding.
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BOOST Technology: Enhances frame geometry possibilities with shorter chain stays, wider suspension pivots, a greater range of chainring options, and increased clearance for bigger tires and wider, stiffer wheels.
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Torque Caps: Strengthen the bond between hub and fork dropout by increasing the contact surface area, resulting in a more responsive front wheel and improved control.
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SKF Seals: These ultra-low friction wiper seals, developed in collaboration with SKF, ensure long-lasting fork performance by keeping dirt out and reducing fatigue.
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Lightweight Machined and Anodized Crown: Adds durability and premium aesthetics to the fork.
- Compatibility: Comes with bolt-in torque cap adapters for use with standard hub end caps and is compatible with short fenders (RockShox fender included).
With these advanced features, the ZEB Ultimate A3 is perfect for riders who demand the best performance, durability, and style on the most challenging trails.
Specs:
| Wheel Size: | 27.5", and 29" |
| Travel: | 160mm, 170mm, 180mm, and 190mm |
| Damper Type: | Charger 3.1 RC2 w/ ButterCups |
| Fork Offset: | 38mm (27.5"), 44mm (27.5"), 44mm (29"), 51mm (29") |
| E-Bike Approved: | Yes |
| Steerer: | 1.5" Tapered |
| Axle: | 15x110mm BOOST™ |
| Upper Tube Type: | 38mm Aluminum |
| Damper Adjust: | Crown |
| Volume Adjuster: | 0/4 Tokens, 1/4 Tokens, 1/5 Tokens, 2/5 Tokens |
| Spring: | DebonAir+ W/ButterCups |
| Max Tire Width: | 81mm |
| Max Rotor Size: | 220mm |
| Min Rotor Size: | 200mm |
| Fender Compatibility: | Bolt On - Short |
| Weight: | 2341g (Based on 29" Maxle Stealth 190mm Travel 1.5" Taper Steerer, W/ButterCups) |
Please reach out to us with any questions you may have on anything we sell. We want to make sure you get the right items the first time. Our lifelong riders at Thunder Mountain Bikes are knowledgeable and would love to talk to you!
Shipping
We currently offer both economy and expedited shipping options though FedEX and USPS.
Orders totaling over $59 are eligible to ship for free via an economy ground option of our choice.
Most bikes ship free within the continental US. Bike shipping to AK, HI, or PR is $250.
If you're in need of something super-quick, please contact us directly. We may be able to overnight your order with an additional fee and depending on your location.
RETURNS
Should there be an issue with the item you bought, or you no longer need your purchase, we will be happy to set up a return.
Component & Gear Returns
Returns may be requested within sixty (60) days of the delivery date. All returned items must be received in new, unused, and uninstalled condition, with the original tags and labels attached and in the original packaging. We cannot accept returns on any items installed or show wear of any kind.
Bike Returns
Returns or exchange requests for bikes must be requested by emailing us at sedona@thundermountainbikes.com within fifteen (15) days from the date of delivery. Bikes must be in un-ridden condition. Custom-built bikes may not be returned. Returned bikes have a $200 restocking fee and the customer pays for return shipping.
Return Shipping
Customers may choose to use our provided flat-rate return shipping label at $9, or choose a carrier of their choice to handle their product return.
The $9 flat rate label will be deducted from the refund issued for the return. You can either print this label after requesting a return from the Order History in your Account profile, or you can request that we email you the label.
For all other return shipping methods, please email us at sedona@thundermountainbikes.com after submitting your return request so that we can confirm the shipping information you should use to return your item(s).
REFUNDS
We will process your return after we receive your returned item(s) and inspect the condition. Please allow at least seven (7) days from the receipt of your item to process your refund. We will notify you by email when your return has been processed.
EXCEPTIONS
If you receive defective or damaged products or if we sent you the wrong products, please contact us using the phone number or email below.
RETURN PROCESS
To request a return, please log in to your customer account by clicking the 
Profile icon in the top right of any page or visit account.thundermountainbikes.com.
1. In the Email field, enter your email address and click Continue.
2. In your email account, open the email sent from our store and copy the six-digit verification code included in the email.
3. Go back to the online store and enter a six-digit verification code to log in.
4. Find and click on the order that you want to submit a return for.
5. If your order has more than one item, select only the items you want to return.
6. Select a return reason and add a note for the store if needed.
7. Click Request Return.
Once your return request is approved, you will receive an email with shipping instructions and a return shipping label.
QUESTIONS ABOUT RETURNS?
If you have any questions concerning our return policy, please contact us at:
