2018 Triumph Bonneville Speedmaster

Specifications
- Category
- Classic
- Displacement
- 1200.0 ccm (73.22 cubic inches)
- Power
- 77.0 HP (56.2 kW) @ 6100 RPM
- Torque
- 106.0 Nm (10.8 kgf-m or 78.2 ft.lbs) @ 4000 RPM
The 2018 Triumph Bonneville Speedmaster
Sitting in Triumph's Modern Classics range as a factory cruiser rather than a standard, the 2018 Triumph Bonneville Speedmaster splits the difference between café-racer roots and low-slung, feet-forward comfort. This is a bike built for relaxed road riding rather than back-road carving — the low seat, pulled-back bars, and torque-heavy engine tuning mean you're rolling on power out of turns rather than revving through a gearbox. It's an easy machine to live with day to day, forgiving in traffic and stable on the highway, with enough low-end grunt to make overtakes and hill starts feel effortless rather than frantic. The 2018 model carried over without significant mechanical changes from the prior year, and this being the first production year for this particular Speedmaster generation, there's no earlier version to compare it against. Worth noting: a broader Triumph clutch cable recall affecting some 2016-2019 Bonneville-family models exists, though it wasn't specific to the Speedmaster. This bike tends to attract riders moving up from smaller cruisers or downsizing from heavier American V-twins, people who want cruiser ergonomics without the bulk. Collector interest remains low for now, making it more of a rider's buy than a garage investment.
Auction history
| Date | Listing | Price | Mileage | Source |
|---|---|---|---|---|
| Apr 30, 2026 | Modified 2018 Triumph Bonneville Speedmaster | $9,000 | — | Bring a Trailer |
| Feb 2, 2024 | 383-Mile 2018 Triumph Bonneville Speedmaster | $7,700 | — | Bring a Trailer |