Service bulletins for the 2021 Triumph Trident
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
47 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Engine control module are shown. Show all
| SMTTB225 | 2023-02-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). Technical Bulletin 225 provides instructions that applies to Triumph Diagnostic Tool 2022-07 Update - ECM Status Report Feature - Beta A, Triumph Diagnostic Tool 2022-07 Update - Introduction of New Headlight ECM Hardware, Triumph Diagnostic Tool 2022-07 Update - Calibrations Removed From Service. |
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| SMTTB225 | 2022-09-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). Technical Bulletin 225 provides instructions that applies to Triumph Diagnostic Tool 2022-07 Update - ECM Status Report Feature - Beta A, Triumph Diagnostic Tool 2022-07 Update - Introduction of New Headlight ECM Hardware, Triumph Diagnostic Tool 2022-07 Update - Calibrations Removed From Service. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.