Harley-Davidson Fat Boy Lo (2010–2011) vs Triumph Trident 660 (2025)
Factory maintenance schedules compared.
| Service | Harley-Davidson Fat Boy Lo (2010–2011) | Triumph Trident 660 (2025) |
|---|---|---|
| Oil change | 5,000 mi | 10,000 mi |
| Valve service | n/a | 20,000 mi |
| Spark plugs | n/a | 20,000 mi |
| Chain | n/a | n/a |
| Brake fluid | n/a | 12 mo |
| Coolant | n/a | n/a |
Common questions
Which is cheaper to maintain, the Harley-Davidson Fat Boy Lo (2010–2011) or the Triumph Trident 660 (2025)?
They demand a similar number of scheduled shop visits based on their factory service intervals.