- Ten models from model years 2022 to 2024 are affected, including the Bonneville T100, T120, Speed Twin 900 and Scrambler 900
- Supplier Mahle delivered the defective component
- An initial recall in October 2024 did not provide an adequate solution for all affected vehicles
Triumph Motorcycles America has filed a safety recall with the US National Highway Traffic Safety Administration (NHTSA) under campaign number SRAN 641. A total of 8,849 motorcycles are affected, which according to the manufacturer’s factory records represents 100 percent of the affected production population. The affected machines rolled off the assembly line between January 2021 and December 2023.
Three Cables Between Alternator and Regulator as the Problem Source
The issue lies in the connection between the alternator and rectifier/regulator. Three cables that carry current from the alternator to the regulator are connected to the main wiring harness via a two-piece plastic connector. This connector apparently cannot withstand the stresses of everyday operation over time. According to the NHTSA report, the cause is a combination of several factors: oil contact, the ambient temperature of the engine, so-called fretting (friction corrosion) at the contact points and high current draw. Together, these factors cause the transition resistance at the connection to increase, creating temperatures that overwhelm the plastic material of the connector housing.
In the worst case, this can lead to smoke development and overheating, which can result in charred connectors and thermal damage to surrounding components. This increases the risk of an accident or fire. A diagnostic warning system via the onboard electronics does not exist. Owners can at best identify the defect by visible damage to the connector housing, such as blistering or blackened housing parts and cables.
Second Attempt After Failed Initial Fix
The current recall is already the second attempt to resolve the problem. In October 2024, Triumph had launched an initial recall under campaign number SRAN 627 (NHTSA Recall 24V785). The solution at that time involved installing a so-called wire alignment clip designed to stabilize the cable routing within the connector. However, this measure proved insufficient for some of the affected vehicles. Specifically, the fix did not work as hoped on motorcycles with a chassis number above AE2011, as pre-damaged contacts in the connector on these machines limited the effectiveness of the clip. Vehicles below this chassis number are considered statistically reliable by Triumph.
Between November 2024 and July 2025, Triumph’s quality department monitored the results of the first recall and continued to identify defects. In February 2026, the decision was made to replace the old campaign and launch the new recall SRAN 641.
Which Models Are Affected?
The recall covers ten different model variants from the Bonneville family. The largest number falls on the Bonneville T120 Black with 1,928 units, followed by the Bonneville T120 with 1,540 and the Bonneville T100 with 1,425 units. The Speed Twin 900 (model years 2023 to 2024) accounts for 1,345 units, the Street Twin (model year 2022) for 1,022 and the Street Scrambler (model year 2022) for 610. Additionally, there are the Scrambler 900 with 628 units, the Street Twin Goldline and Street Scrambler Sandstorm with 150 units each, and the limited-edition Bonneville T120 DGR from model year 2024, limited to 51 units.
New Repair Solution Aims to Permanently Eliminate the Problem
The repair at authorized Triumph dealers involves completely removing the existing two-piece plastic connector. In its place, an individual, directly crimped inline connection is made for each of the three cables. This eliminates the vulnerable plug contact entirely. According to Triumph, this solution was extensively analyzed and tested under various operating conditions, including worst-case scenarios.
In ongoing production, Triumph has already resolved the issue from chassis number BT0246 onwards through the factory-installed wire alignment clip. No field complaints have been reported for these vehicles to date.
Dealers Already Informed, Owners Will Receive Mail
Triumph informed its US dealer network about the recall on February 18, 2026. Notification letters to registered owners of affected motorcycles were sent from February 24, 2026. Affected owners should contact their local authorized Triumph dealer to schedule a workshop appointment. The repair is carried out free of charge as part of the recall.
Those who have already had the repair carried out at their own expense can apply for reimbursement by submitting appropriate documentation such as workshop invoices. Processing is handled through Triumph’s general reimbursement program from April 2024.
The NHTSA lists the recall under number 26V078. In the US, owners can reach Triumph’s customer hotline at 1-678-854-2010 or contact the NHTSA directly at 1-888-327-4236. Whether the recall also affects markets outside the US is not indicated in the available documents.
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