2017-12-14. Technical News 176 provides instructions that apply to Handlebar End Weight Fixings, Coolant Expansion Tank Cover Fixings, Airbox and Immobiliser Connector Anti-Tamper Foam Pad, Scheduled Maintenance Chart, Rider's Seat Fixing, Triumph Diagnoatic Tool - End of Support for Mictosoft Windows Vista, Temporary Packing Crate, Steering Lock Removal and Installation, Exhaust Clamp and Bolt Assembly, Service Manual Update - Purge Control Valce and Engine Breather Cover, Belly Pan Panel Assembly Fixings. NHTSA's copy of the document (PDF)
Bulletins from the manufacturer that mention a maintenance schedule or a service interval, as NHTSA summarises them. They are not the schedule itself: read the document, and the owner's manual.
None on file. NHTSA's data has no trims for this model year.
Engines
1.0L
1.1L
1.2L
1.6L
1.7L
2.3L
600cc
646cc
660cc
675cc
800cc
900cc
Position 8 of a VIN names the engine on many vehicles: how to read a VIN. Safety equipment depends on the trim, so decode a VIN to see what one vehicle has.