Introducing the revamped Stealth Dominion – the renowned Hayes Dominion A4 brakes return with enhanced features, providing more control when it counts!
The Dominion A4 boasts a master cylinder tuned for minimal dead stroke and precise bite, ensuring immediate response. Its cold-forged caliper with four pistons and KingPin structural pad retention bolt delivers unparalleled rigidity.
Equipped with a motorsports-inspired Two-Stroke dual port bleed system, industry-leading DOT 5.1 fluid, and Kevlar hose, the hydraulic system guarantees top-tier performance in all conditions and hassle-free upkeep.
Featuring the proprietary QuickBite² system for rapid and consistent burnish, paired with our D-Series rotor to manage heat and minimize braking noise.
Available in SFL (Small Finger Lever) variant, tailored for smaller hands.
Dominion A4 Disc Brake Set Details:
- Tool-Free Reach Adjustment
- Flip-Flop Lever Orientation
- King Pin Pad Retention
- Crosshair Caliper Alignment
- Two-stroke, dual-port bleed system
- Weighs 310g (100cm hose and mount hardware)
- Utilizes DOT 5.1 Fluid
- Sealed Cartridge Bearings Lever Pivot
- Front Hose Length: 100cm
- Rear Hose Length: 180cm
Please reach out to us with any questions you may have on anything we sell. We want to make sure you get the right part 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 $49 are eligible to ship for free via an economy ground option of our choice.
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.
Returns or exchange requests for New or Used 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.
Returns for most other items 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.
Clearance and open-box items may not be returned.
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.
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.
OTHER QUESTIONS?
If you have any questions concerning our return policy, please contact us at:
