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.
What we checked
Checked against public records, 2026-09-25
We checked NHTSA for this exact year and model and it returned nothing. That is a fact about the database, not a clean bill of health — it usually means few of these were sold or few owners filed. What follows is our own write-up, unreconciled.
Known Issues for the 2021 Triumph Trident 660
Ranked by wallet impact. These are documented, recurring problems — not freak accidents. How we decide that.
Inspect tank, bars, levers, and engine cases for drop/crash evidence.
Repair cost: Not yet priced
Source: not yet checked against public records.
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
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Found a specific Triumph Trident 660?
This page covers what goes wrong on the 2021 Triumph Trident 660 in general. A free read looks at the one you're considering— it checks that seller's asking price against the market and names the issues that matter most for this exact year.
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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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