KTM 390 Duke (2017–2022) vs Triumph Trident 660 (2025)
Factory maintenance schedules compared.
Triumph Trident 660 (2025) needs fewer scheduled shop visits per 10,000 miles.
| Service | KTM 390 Duke (2017–2022) | Triumph Trident 660 (2025) |
|---|---|---|
| Oil change | 4,650 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 | 48 mo | n/a |
Common questions
Which is cheaper to maintain, the KTM 390 Duke (2017–2022) or the Triumph Trident 660 (2025)?
Triumph Trident 660 (2025) needs fewer scheduled shop visits per 10,000 miles based on its factory service intervals.