2018 Triumph Street Triple S problems, complaints & recalls
Most-reported problem areas: Service Brakes (1) · Electrical System (1)
Safety recalls (1)
Exterior Lighting:turn Signal:switch 2018-05-09 · campaign 18V302000 · 1,249 vehicles
Defect: Triumph Motorcycles America, LTD (Triumph) is recalling certain 2018 Street Triple R, Street Triple R - Low Seat and Street Triple RS motorcycles. Water may get into the left-hand combination switch on the handlebar and cause the turn signal switch and the headlight switch to malfunction.
Risk: If the turn signal and headlight switches do not function properly, there would be an increased risk of a crash.
Fix: Triumph will notify owners, and dealers will replace the handlebar left-hand combination switch, free of charge. The recall began June 22, 2018. Owners may contact Triumph customer service at 1-678-854-2010.
Service bulletins (128)
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 128 bulletins. Search all of them free at nhtsa.gov.
What owners report
2022-11-19 · Service Brakes“the the front brakes are soft and slow to engage when pulling the brake lever. however, when pulling the lever immediately afterwards, the brakes engage quickly and firmly. after a short period of time without engaging the front brakes, pulling the lever again results in soft and slow engagement. slow and soft engagement of the front brake is a cle…”
2018-06-28 · Electrical System · 6,800 mi“at higher rpms and going over sharp bumps the headlight bulbs constantly burn out. i've been through 3 in the past year…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.