Recall 25V834 affects 7 2023 Zero Dsr/X motorcycles for incorrect controller fasteners that can cut drive power. Repair is free at any franchised Zero dealer.
Zero is recalling 7 2023 Dsr/X motorcycles because incorrect motor-controller fasteners can create higher resistance at the busbar joint and cut drive power. A loss of drive power increases crash risk, and Zero dealers will complete the repair free of charge.
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What's wrong?
The motor controller on the 2023 Zero Dsr/X is the electronic unit that manages power between the battery and the traction motor. It tells the motor how much drive power to deliver when you open the throttle. Inside that controller, busbars are solid metal conductors that carry high current through bolted joints, so the fasteners have to hold the joint tightly.
On affected motorcycles, the controller supplier used non phosphate coated fasteners at internal busbar joints. Those fasteners have different friction than the specified hardware, so the same torque did not create enough clamping force. A loose high power joint creates higher electrical resistance, which turns that joint into a weak point and can trigger an overvoltage event inside the controller. When that happens, the controller can shut down and the motorcycle can lose drive power.
There is no warning sign before failure. The recall remedy uses phosphate coated hardware and added torque verification so those high power joints hold the proper preload.
Who's affected?
| 2023 Zero Dsr/X | electric propulsion system |
|---|---|
| Units affected | 7 |
| Field incidents | NHTSA has logged no field incidents to date. |
Not every 2023 Zero Dsr/X motorcycle is on the list. Check your VIN to confirm whether your specific motorcycle is included.
What's the safety risk?
A loss of drive power increases the risk of a crash. There is no warning sign before failure, so schedule the controller replacement soon and ride cautiously until the repair is complete. Repair is free at any franchised Zero dealer.
What should I do?
- Check your VIN to confirm your 2023 Zero Dsr/X is included in this recall.
- Contact a franchised Zero dealer to schedule the free motor-controller replacement that fixes the drive-power loss linked to incorrect controller fasteners.
- Bring the recall notice if Zero mailed one. If not, reference recall number 25V834 and Zero recall SV-RCL-025-021 when you call.
- Limit riding until the controller replacement is complete; stop riding and contact the dealer if the motorcycle loses drive power.
What happens at the repair
At the dealer, a Zero technician replaces the motor controller covered by recall 25V834. The repair is free under the recall, with parts and labor covered. The controller issue involves incorrect fasteners that increase resistance at the busbar joint and can lead to a loss of drive power. Zero states that separate customer reimbursement should not be necessary because all units are still under warranty. Ask the service desk how warranty coverage applies if you have prior repair paperwork.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| December 2, 2025 | NHTSA published the recall |
|---|---|
| December 5, 2025 | Dealer notification began |
| December 19, 2025 | Dealer notification ended |
| December 19, 2025 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| January 9, 2026 | Interim owner notification (was planned for this date) |
| January 19, 2026 | Owner notification mailed |
Frequently asked questions
What is recall 25V834?
Recall 25V834 covers 7 2023 Zero Dsr/X motorcycles with a motor controller built with incorrect fasteners. The fasteners can create higher resistance at the busbar joint, causing loss of drive power and increasing crash risk. Zero dealers will replace the controller for free.
What should I do if my 2023 Zero Dsr/X is on this recall?
Check your VIN to confirm your specific motorcycle is included in recall 25V834. If it is, contact a franchised Zero dealer to schedule the free controller replacement. Reference recall 25V834 or Zero recall number SV-RCL-025-021 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to fix the defect at no cost, and Zero will replace the controller free of charge at a franchised Zero dealer. Parts and labor are covered for included motorcycles.
What is the safety risk?
The safety risk is loss of drive power while riding. A sudden loss of drive power increases crash risk, especially in traffic or during a turn. If your VIN is included, arrange the free controller replacement with a Zero dealer.
When were owners notified about recall 25V834?
Zero mailed owner notification letters on January 19, 2026. VIN eligibility became searchable on December 19, 2025. If you did not receive a letter, check your VIN and contact Zero customer service at 1-888-841-8085 or a franchised Zero dealer.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/25V834000 |
|---|---|
| Zero customer service | 1-888-841-8085 |
| NHTSA recall # | 25V834 |
| NHTSA recall # (full) | 25V834000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notification Letter (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 19, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →