2021 Triumph Trident 660 — Should You Buy One?
Typical asking price: $6,500–$8,500. This is one of the more reliable vehicles in its class — here's what to watch for anyway.
Kestrel Take
A brilliant middleweight all-rounder — Triumph's characterful 660 triple, an approachable upright riding position, and genuinely premium build make the Trident one of the best value 'do-it-all' bikes going. Friendly for newer riders, satisfying for experienced ones. Reliable and well-priced. A clean Trident with records is a superb, versatile bike that punches well above its price; check consumables and for drops.
Known Issues for the 2021 Triumph Trident 660
Ranked by wallet impact. These are documented, recurring problems — not freak accidents.
Inspect tank, bars, levers, and engine cases for drop/crash evidence.
Repair cost range: Varies
Check chain tension, lube, and sprocket wear.
Repair cost range: $150-$400
Check tire date codes and tread.
Repair cost range: $250-$450
Scheduled valve checks; verify done.
Repair cost range: $300-$700
Walk-Away Red Flags
- ✗Drop/crash damage
- ✗Worn chain/sprockets
- ✗Old tires
- ✗No service records
Good Signs
- ✓Un-dropped, clean bike
- ✓Fresh chain and tires
- ✓Documented service, honest miles
Found a specific Triumph Trident 660?
This page covers what goes wrong on the 2021 Triumph Trident 660 in general. The Kestrel report covers this specific car— the asking price vs. market, the photos, the seller's description, and a BUY / NEGOTIATE / WALK AWAY verdict with a negotiation script.
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Known issues on this page are based on documented owner reports, NHTSA complaints, class-action records, and manufacturer technical service bulletins. Individual vehicles vary. A pre-purchase inspection by a trusted mechanic is always worth doing.
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