Campaign 21V-795

Rear rotor bolts were insufficiently tightened

Defect summary

Zero Motorcycles Inc. (Zero) is recalling certain 2020 SR/F motorcycles. The rear rotor bolts were insufficiently tightened.

Consequence

The loose bolts may damage the caliper or swingarm, reducing rear braking capability and increasing the risk of a crash.

Remedy

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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Source: NHTSA ODI recalls file, campaign 21V795000. Text as published by NHTSA.

Vehicles covered

One product line is covered

Owner complaints filed with NHTSA about brakes on these vehicles: 0, of which 0 involved a crash, fire, injury or death. Complaints are not verified by NHTSA.

Vehicles covered by campaign 21V-795
Make	Model	Model years	Complaints on this component
Zero	SR/F	2020	0

Source: NHTSA ODI recalls and complaints files. Equipment, tire and child-seat campaigns list products, not vehicles.

Investigation

No NHTSA investigation is linked to this recall

Most recalls are started by the manufacturer. This one lists "Manufacturer" as its origin.

Before the recall

No service bulletins on this component preceded the recall

Distinct manufacturer communications on the same component group, make, model and model year in the 24 months before the report date.

Source: NHTSA manufacturer communications file.

Service bulletins

26V-048 Jan 28, 2026
Front brake hose may be twisted and become damaged, which can cause a brake fluid leak and a loss of brake pressure
25V-459 Jul 11, 2025
Front brake hose may be twisted and become damaged, which can cause a brake fluid leak and a loss of brake pressure
22V-403 Jun 8, 2022
Incorrect front brake caliper bolts may have been installed and could damage the mounting threads on the fork, causing the caliper to loosen
21V-940 Dec 3, 2021
Incorrect rear brake pads were installed
17V-145 Mar 7, 2017
Anti-Lock Braking System (ABS) Hydraulic Control Unit (HCU) may have the wrong vehicle model information, possibly causing the ABS to function…
13V-329 Jul 30, 2013
On the affected motorcycles, the front caliper mounting bolts are susceptible to corrosion which could lead to their cracking and possible fracture