Recall 21V629 affects 4,744 2020-2021 Polaris Slingshot vehicles for loose rear wheel studs. Repair is free at any franchised Polaris dealer.
Polaris is recalling 4,744 2020-2021 Slingshot vehicles because the rear wheel studs were not fully pressed into the axle and can loosen. Loose rear wheel studs can lead to wheel detachment and increase crash risk; the dealer repair will be free once Polaris makes it available.
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What's wrong?
The rear axle/stud assembly on 2020-2021 Polaris Slingshot vehicles is the hardware that holds the rear wheel to the axle. The wheel studs are threaded posts pressed into the axle, and the lug nuts tighten onto those posts to clamp the wheel in place. When the studs are seated correctly, the wheel stays tight as the axle turns.
On affected Slingshots, the supplier did not press the rear wheel studs fully into the axle. During assembly, part of the splines, the ridges that help lock each stud in place, was stripped. That left the studs improperly seated, so normal driving vibration and wheel load can let the rear lug nuts loosen over time.
Owners can notice noise or vibration from the rear wheel area before the problem is found. If that happens, treat it as a warning sign that the rear wheel hardware needs dealer inspection.
Who's affected?
The scope spans the 2020 and 2021 Slingshot, with the same rear axle and wheel fastener concern listed for each year.
| 2021 Polaris Slingshot | wheel fastener (lug, nut, bolt, or stud) |
|---|---|
| 2020 Polaris Slingshot | wheel fastener (lug, nut, bolt, or stud) |
| Units affected | 4,744 |
| Field incidents | NHTSA has logged no field incidents to date. |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific motorcycle is included.
What's the safety risk?
Loose rear wheel studs raise the risk of rear wheel detachment, which increases crash risk. Noise or vibration is the warning sign listed for this recall, so slow down, avoid hard driving, and schedule inspection soon. Repair will be free at any franchised Polaris dealer once available.
What should I do?
- Check your VIN to confirm your 2020-2021 Polaris Slingshot is included in this recall.
- Use the owner letter Polaris mailed to confirm the repair instructions, and call Polaris customer service if the letter is missing.
- Ask a franchised Polaris dealer whether the free rear axle and wheel-stud inspection is open for your VIN; the repair addresses loose rear wheel studs that can lead to wheel detachment.
- Reference recall number 21V629 and Polaris recall T-21-01 when you call the dealer.
- Avoid driving if a rear wheel feels loose, a wheel stud is missing, or the dealer tells you the Slingshot is unsafe to drive.
What happens at the repair
At the dealer, a Polaris technician will inspect the rear axle and wheel stud assembly. If the studs are not fully seated or the assembly is damaged, the technician replaces the rear axle/stud assembly. Polaris says the inspection and replacement are free under the recall once the dealer repair is available. Owner letters were mailed August 27, 2021, so ask the service desk to look up campaign T-21-01 for your VIN before you bring the Slingshot in.
Timeline
| August 10, 2021 | NHTSA published the recall |
|---|---|
| August 13, 2021 | Dealer notification began |
| August 13, 2021 | Dealer notification ended |
| August 23, 2021 | Interim owner notification (was planned for this date) |
| August 27, 2021 | Owner notification mailed |
Frequently asked questions
What is recall 21V629?
Recall 21V629 covers 4,744 2020-2021 Polaris Slingshot vehicles with rear wheel studs that were not fully pressed into the axle. Loose studs can lead to rear wheel detachment and raise crash risk. Polaris dealers will inspect and replace the rear axle/stud assembly for free when needed.
What should I do if my 2020-2021 Polaris Slingshot is on this recall?
Check your VIN to confirm your specific Slingshot is included in recall 21V629. If it is, contact a franchised Polaris dealer and reference Polaris recall T-21-01. The dealer will inspect the rear axle and wheel studs, then replace the rear axle/stud assembly for free if needed.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. Polaris dealers will inspect the rear wheel studs and replace the rear axle/stud assembly free of charge when the inspection shows replacement is needed.
What is the safety risk on this Polaris Slingshot recall?
The safety risk is rear wheel detachment. NHTSA campaign 21V629 says loose rear wheel studs can separate from the axle, which raises crash risk. If your VIN is included, arrange the free dealer inspection and repair before relying on the vehicle for normal trips.
When were owners notified about recall 21V629?
Polaris mailed owner notification letters on August 27, 2021. If you bought the Slingshot used or never received a letter, check your VIN to confirm whether your specific vehicle is included, then call a franchised Polaris dealer with recall number T-21-01.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/21V629000 |
|---|---|
| Polaris customer service | 800-765-2747 |
| NHTSA recall # | 21V629 |
| NHTSA recall # (full) | 21V629000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Quarterly Report (PDF)
- Download Recall Document (PDF) (PDF)
- Download Misc. Document (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (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 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →