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Service bulletins for the 2025 Triumph Trident 660

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

Bulletins, newest first
COM2 - 307682025-06-02. Service bulletin. ELECTRICAL SYSTEM. Dealer notice advising the availability of Diagnostic software version 2025-07 and dealers should begin using it immediately.
TB2502025-06-02. Service bulletin. ELECTRICAL SYSTEM. Technical Bulletin 250 provides instructions that applies to the Triumph Diagnostic Tool Update - Smart Scan VIN Query and VIN Data Page, Triumph Diagnostic Tool - Engine ECM Diagnostics - Write VIN Function, Electronic Control Modules (ECMs) Must Not Be Swapped Between Motorcycles.
COM1 - 306782025-06-02. Service bulletin. ELECTRICAL SYSTEM. Dealer notice announcing the availability of Technical Bulletin 250.
COM9 - 305762025-05-06. Service bulletin. ELECTRICAL SYSTEM. Dealer notice advising the availability of Diagnostic software version 2025-06 and dealers should begin using it immediately.
COM7 - 305242025-05-06. Service bulletin. UNKNOWN OR OTHER. Dealer notice advising of some customer complaints relating to condensation in the instrument pack and headlamp.
COM6 - 304992025-05-06. Service bulletin. ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software version 2025-05 and dealers should begin using it immediately.
COM6_303092025-04-01. Service bulletin. ELECTRICAL SYSTEM. Dealer notice advising that the new Autoscan feature within the SmartScan function has now been enabled with the release of TDT 2025-04.1 and that instructions are detailed in Technical Bulletin 249.
TB2492025-04-01. Service bulletin. ELECTRICAL SYSTEM. Technical Bulletin 249 provides instructions that applies to the Triumph Diagnostic Tool - New Smart Scan Download Feature - Calibration Option Selection and the Triumph Diagnostic Tool - New Smart Scan Feature - Autoscan.
COM5_302122025-04-01. Service bulletin. ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2025-04.1 and that dealers should begin using it immediately. This version includes a fix for the hardware part number-based calibration download issue.
COM3_301122025-04-01. Service bulletin. ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2025-04 and dealers should begin using it immediately.
COM3-299562025-03-05. Service bulletin. ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2025-03 and that dealers should begin using it immediately.
COM2-298602025-03-05. Service bulletin. ELECTRICAL SYSTEM. Dealer notice advising of an issue in the latest version of the My Triumph App where the navigation feature will not operate.
COM1-298172025-03-05. Service bulletin. ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2025-02 and that dealers should begin using it immediately.
COM1-296892025-02-06. Service bulletin. ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2025-01 and that dealers should begin using it immediately.
COM3_294782024-12-19. Service bulletin. ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2024-14 and that dealers should begin using it immediately.
TU2_294502024-12-19. Service bulletin. POWER TRAIN. Technical update advising dealers that if the battery has been disconnected then Triumph Shift Assist (TSA) will be disabled and provides instructions on how to enable TSA.
TB2482024-12-05. Service bulletin. ELECTRICAL SYSTEM. Technical Bulletin 248 provides instructions that applies to ABS modulator ground.
COM10-292942024-12-04. Service bulletin. ELECTRICAL SYSTEM. Dealer notice advising that an update will be released relating to the cruise control switch deck and to carry out a manual switch check where required.
COM9-292372024-12-04. Service bulletin. ELECTRICAL SYSTEM. Dealer notice advising the availability of Technical Bulletin 248.
COM3-291312024-12-04. Service bulletin. ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2024-13 and dealers should begin using it immediately.
COM2-284732024-10-01. Service bulletin. ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2024-12 and dealers should begin using it immediately.
COM1-283692024-09-04. Service bulletin. ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2024-11 and that dealers should begin using it immediately.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.