2017 Triumph Street Twin problems, complaints & recalls
Most-reported problem areas: Fuel System, Gasoline (1) · Electrical System (1)
Safety recalls (2)
Electrical System:wiring 2019-02-27 · campaign 19V133000 · 12,654 vehicles
Defect: Triumph Motorcycles America, LTD (Triumph) is recalling certain 2016-2019 Bonneville T120 and Bonneville T120 Black, 2017-2019 Bonneville T100 and T100 Black, 2017-2018 Street Cup and Street Scrambler, and 2016-2018 Street Twin motorcycles. The clutch cable may contact the main harness cover and cause damage to wiring within the main harness. This may lead to a loss of electrical power to various electrical circuits.
Risk: Loss of electrical power may cause the headlight or indicator lighting to malfunction or the engine to stall, increasing the risk of a crash.
Fix: Triumph will notify owners, and dealers will replace the original securing guide for the clutch cable and main harness with an updated one, free of charge. The recall began March 27, 2019. Owners may contact Triumph customer service at 1-678-854-2010. Triumph's number for this recall is SRAN560.
Service Brakes, Hydraulic 2016-06-13 · campaign 16E057000 · 119 vehicles
Defect: Triumph Motorcycles America, LTD (Triumph) is recalling certain accessory Adjustable Brake Levers, sold as part of an aftermarket lever replacement kit, part number A2021334. These brake levers are intended for installation on 2016 and 2017 Thruxton 1200, Street Twin, Bonneville T120, and Bonneville T120 Black motorcycles. Under certain conditions, the brake levers may contact the handlebar before maximum braking force is applied.
Risk: Without the ability to apply maximum front braking, the distance needed to stop the motorcycle may be lengthened, increasing the risk of a crash.
Fix: Triumph will notify owners, and dealers will replace the affected brake levers, free of charge. The recall began July 7, 2016. Owners may contact Triumph customer service at 1-678-854-2010.
Service bulletins (123)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Electrical System 2026-09-22 · COM2_35786 · Service Bulletin/Repair Instructions
dealer notice announcing the availability of daignostic software and dealers should begin using it immediately.
Electrical System 2026-07-14 · COM1-35109 · Service Bulletin/Repair Instructions
dealer notice announcing the availability of triumph diagnostic tool 2026-07 and dealers should begin using it immediately.
Electrical System 2026-06-23 · COM2 - 34886 · Service Bulletin/Repair Instructions
dealer notice announcing the availability of triumph diagnostic tool 2026-06.1 and dealers should begin using it immediately.
Electrical System 2026-05-19 · COM6 - 34491 · Service Bulletin/Repair Instructions
dealer notice announcing the availability of triumph diagnostic tool version 2026-06 and dealers should begin using it immediately.
Unknown Or Other 2026-05-19 · COM5 - 34490 · Service Bulletin/Repair Instructions
dealer notice announcing the availability of technical bulletin 264.
Unknown Or Other 2026-05-18 · TB264 · Service Bulletin/Repair Instructions
technical bulletin 264 provides instructions that relates to: triumph diagnostic tool - new motorcycle connection and diagnostics workflow, triumph diagnostic tool - end of support for microsoft windows 10.
Showing the 6 most recent of 123 bulletins. Search all of them free at nhtsa.gov.
What owners report
2025-11-06 · Fuel System, Gasoline · 51,000 mi“the contact’s son owns a 2017 triumph street twin. the contact stated that whenever the motorcycle was started, the rpm increased and the engine revved while in a standalone position. the contact stated that once the motorcycle was placed in a straight position and the handlebars were straight, the rpm decreased. the contact related the failure to …”
2020-03-23 · Electrical System · 3,000 mi“over time, the turn signals stop working because of how tightly the wiring harness is to the headstock. because of the overextension of the wires, the connection for the turn signals begins to break thus causing damage.…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.