Use cautionVehicle recall · NHTSA · Published October 13, 2021
Zero 2020 SR/F Motorcycles: Loose Rotor Bolts Risk Crash
Zero is recalling 2020 SR/F motorcycles with loose rear rotor bolts that could reduce braking and increase crash risk. Owners must have bolts tightened by dealers free of charge.
“Zero 2020 SR/F Motorcycles: Loose Rotor Bolts Risk Crash.” GovInfoNow, updated August 18, 2026. https://govinfonow.com/recall/80205-zero-2020-sr-f-motorcycles-loose-rotor-bolts-risk-crash. Based on NHTSA recall #21V795000 (https://www.nhtsa.gov/recalls?nhtsaId=21V795000).
Zero Motorcycles Inc. recalled certain 2020 SR/F motorcycles due to insufficiently tightened rear rotor bolts, according to the National Highway Traffic Safety Administration (NHTSA) on October 13, 2021. Dealers will tighten and replace the bolts free of charge.
How to tell if you have it
Zero SR/F, 2020
What to do
Dealers will correctly tighten and replace the rear rotor bolts as necessary, free of charge. Owner notification letters were mailed November 1, 2021. Owners may contact Zero customer service at 1-888-841-8085.
The hazard
The loose bolts may damage the caliper or swingarm, reducing rear braking capability and increasing the risk of a crash.
Context
GovInfoNow's records show Zero Motorcycles Inc. has had 11 other recalls on record since May 16, 2011. Other recent recalls of similar products include Harley-Davidson 2025 FLHC Motorcycles: Rear Brake Line Recall (April 13, 2026), Husqvarna FE 350S (2024) Recall: Brake Caliper Cracks Risk Crash (August 7, 2026), and BMW 2024-2026 S 1000 RR Motorcycles: Electrical System Risk (July 23, 2026).
How to tell if you have this one
Check if your 2020 Zero SR/F motorcycle has rear rotor bolts that were not tightened enough. The recall was announced in November 2021 for these specific models.
Brand
Zero
Category
Vehicle
Based on the official NHTSA remedy
What to do — step by step
Contact Dealer for Repair
Dealers will tighten and replace rear rotor bolts at no cost to fix the issue.
Check Owner Notification
You should have received a notification letter from Zero mailed November 1, 2021.
November 1, 2021
Official remedy
What NHTSA says to do
Dealers will correctly tighten and replace the rear rotor bolts as necessary, free of charge. Owner notification letters were mailed November 1, 2021. Owners may contact Zero customer service at 1-888-841-8085. Zero's number for this recall is SV-ZMC-020-417.
How this recall unfolded
Recall timeline
Owners were mailed letters 19 days after NHTSA received the defect report.
1NHTSA received the defect report
2Owner letters mailed
Dates from the agency record only; steps without a date are left out.
Take action
Contact Zero
We’ve drafted a message you can send Zero to request your refund or repair — edit it as you like.
Subject: Recall 21V795000 — Zero 2020 SR/F Motorcycles: Loose Rotor Bolts Risk Crash
Hello,
I own a Zero 2020 SR/F Motorcycles: Loose Rotor Bolts Risk Crash that is covered by recall 21V795000 from Zero.
The official recall notice states: Dealers will correctly tighten and replace the rear rotor bolts as necessary, free of charge. Owner notification letters were mailed November 1, 2021. Owners may contact Zero customer service at 1-888-841-8085. Zero's number for this recall is SV-ZMC-020-417.
I’m writing to arrange the remedy described in the recall (a refund, repair, or replacement as applicable). Could you please tell me the next steps to resolve this?
Thank you.
The facts (hazard, remedy, dates, manufacturer) are pulled from the official NHTSA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
Plain-language summary written by qwen3:4b on August 18, 2026, from the official record above. Not reviewed by a person — if it conflicts with the NHTSA notice, the notice is correct. Report an error on this page.
GovInfoNow is an independent service and is not a government agency. We republish official NHTSA recall data; we don’t issue, amend or administer recalls.