Triumph Bonneville Speedmaster specifications
Triumph · Classic
The Bonneville Speedmaster uses Triumph’s 1200cc, 270-degree parallel twin with a six-speed gearbox. Its listed seat height is 27.8 inches and wet weight is 580 lb. The 59.1-inch wheelbase and cruiser seating arrangement distinguish it from the Bobber; base MSRP is $13,995.
Triumph Bonneville Speedmaster
| Specification | Value |
|---|---|
| Rear suspension | Mono-shock RSU with linkage and preload adjustment |
| Seat height | 27.8 in |
| Wet weight | 580 lb |
| Rake (caster angle) | 25.3 ° |
| Exhaust | Chromed stainless steel 2 into 2 twin-skin exhaust system with chromed stainless silencers |
| Class | Classic |
| Engine | Liquid cooled, 8 valve, SOHC, 270° crank angle parallel twin |
| Displacement | 1200cc |
| Bore x stroke | 97.6x80 mm |
| Compression ratio | 10.0:1 |
| Fuel system | Multipoint sequential electronic fuel injection |
| Transmission | 6-speed |
| Final drive | Chain |
| Front suspension | Ø 47 mm Showa cartridge forks |
| Front brake | Twin Ø310mm disc, Brembo 2-piston sliding axial calipers |
| Rear brake | Single Ø255mm disc, Nissin single piston sliding axial caliper |
| Front tire | MT90B16 |
| Rear tire | 150/80 R16 |
| Wheelbase | 59.1 in |
| Trail | 3.6 in |
| Fuel capacity | 3.2 gal |
| Maximum power | 76.9 HP @ 6100 RPM |
| Maximum torque | 78.2 LB-FT @ 4000 rpm |
| Clutch | Wet, multi-plate torque assist clutch |
| Frame | Tubular steel, twin cradle frame |
| Swingarm | Twin sided fabrication |
| Instruments | Analogue speedometer with LCD multi-functional display |
| Starting MSRP | $13,995 |
A 27.8-inch published seat height is useful for comparison, but the seat shape and forward-control reach still need to suit the rider. The Speedmaster’s two-seat cruiser layout differs from the Bobber’s arrangement. Check the passenger seat and equipment on the actual motorcycle.
Total MotorcycleTriumph · Classic
The Bonneville Speedmaster is Triumph's British-style 1200cc cruiser, updated for 2026 with a bigger tank, wider seats and lean-sensitive cornering ABS. RideApart calls the seat unbelievably good and comfortable, and Triumph asks $13,995.
RideApart says that, comfort being subjective, the 2026 Speedmaster has an unbelievably good and comfortable seat, and that the bike is a much more refined, sleeker beast thanks to the combination of that engine with the saddle and the pipes. It lists the upgrades shared with other 2026 Bonnevilles: optimized lean-sensitive cornering ABS, traction control and a USB-C socket up front for charging.
Total Motorcycle describes a refined evolution of Triumph's classic British cruiser with a larger 3.7 gal (14 L) fuel tank, more comfort and new rider-focused technology. The article says the Speedmaster gains wider seats for both rider and pillion and straighter handlebars for a more natural riding position, while the related Bobber gets a wider and more generously padded floating seat.
What the update changes
The larger tank matters most for a cruiser that is used for day trips: 3.7 gal is 0.5 gal more than the 3.2 gal listed in this data for the earlier bike. The straighter bars open up the riding position for a wider range of riders. The added pillion width makes two-up riding more realistic. Lean-sensitive ABS and traction control bring the Speedmaster level with most modern middleweights.
Price and weight beside its rivals
Triumph lists the Speedmaster at $13,995, the same as its Bobber sibling at $13,995, with a 27.8 in seat and 580 lb wet, 27 lb more than the Bobber's 553 lb. Honda's Rebel 1100 is $9,699 with a 27.9 in seat and 497 lb curb. The Triumph costs $4,296 more and offers a larger, more traditional twin. The premium is for the engine and finishing rather than the equipment list.
Checks before you buy
Ask whether the 2026 changes are fitted to the bike you are shown. Check that the ABS warning lamp completes its normal self-test; do not deliberately provoke ABS on a wet public road. Look at the USB-C socket and the display. Compare it with the Bobber on the same day. Bring a passenger if you ride two-up.
Who it suits
The Speedmaster suits a rider who wants a low, comfortable, classic-looking cruiser with a proper 1200cc twin and pillion room. A rider who wants a lighter, cheaper cruiser should look at the Rebel 1100.
Service schedule
The Speedmaster is serviced every 10,000 miles (16,000 km) or once a year. Use the service schedule for the specific model year to distinguish oil changes, inspections, spark-plug replacement and valve-clearance work; they need not share an interval.
Speedmaster against the Bobber and Rebel 1100.
Triumph's Bobber shares the engine, and Honda's Rebel 1100 is the closest cruiser at a lower price.
Triumph Bonneville Speedmaster across model years
- Capture-date range (not model years)
- 2021–2026
- Compared editions
- 4
- Specification entries
- 30
- Entries that differ
- 19
- Max Torque EC
- 78FT-lbs (106Nm) @ 4,000rpm; 78.2 LB-FT; 78.2 LB-FT.
- Frame
- Tubular steel cradle; Tubular steel, twin cradle frame; Tubular steel, twin cradle frame.
- Tank Capacity
- 3.17 US gal (12 l); 3.2 US gal (12 liters); 3.2 US gal (12 liters).
Triumph Bonneville Speedmaster questions
What changed on the 2026 Triumph Speedmaster?
Total Motorcycle lists a larger 3.7 gal tank, wider rider and pillion seats, straighter bars and new rider technology. RideApart adds lean-sensitive ABS and traction control.
Is the Triumph Speedmaster comfortable?
RideApart calls the 2026 seat unbelievably good and comfortable, while noting comfort is subjective.
How tall is the Triumph Bonneville Speedmaster?
Triumph lists a 27.8 in seat and a 580 lb wet weight for a 1200cc cruiser, low enough for most riders to reach the ground.
Ask whether the 2026 changes are fitted to the bike you are shown. Check the ABS lamp self-test and the manual; do not deliberately provoke an ABS intervention on a wet road. Look at the USB-C socket and the display. Compare it with the Bobber on the same day. Bring a passenger if you ride two-up.
The Speedmaster is serviced every 10,000 miles (16,000 km) or once a year. Each service changes the oil and filters and checks the valves. The spark plugs are inspected every second service, at 20,000 miles, when the valve clearances are checked again.
Choosing the passenger cruiser rather than the Bobber
The Speedmaster's passenger accommodation is a central reason to compare it with the Bobber. Bring the intended passenger to a stationary fitting and inspect the actual seat and footrests. A motorcycle can offer a low rider saddle while still placing the passenger noticeably higher or farther back. Consider how the passenger gets on and off, where luggage would sit and whether any proposed backrest is part of the written offer.
Separate the updated tank from older specifications. The earlier specification table lists 3.2 gallons, while the published 2026 update describes 3.7 gallons. That is an additional half gallon of capacity; it is not a measured range increase in miles. Fuel use still depends on the route and riding.
If a dealer is selling an earlier example beside the updated machine, identify the tank and equipment by the actual model documentation rather than applying the newer specification to every Speedmaster.
The move to straighter bars and wider rider and pillion seats is worth trying directly. Forward-control reach, bar reach and seat support act together. A rider who can reach the ground easily may still find the pedals too far away, or may prefer a different wrist angle. Those observations can justify the cruiser layout without relying on someone else's comfort score.
Ask whether the display bike has an accessory seat before making a decision from that fitting.
Base MSRP is the same $13,995 in the Speedmaster and Bobber figures used here, so a choice between them need not start with an assumed price premium. Compare the equipment included in the actual offers, then add passenger and luggage requirements. Buying a solo-oriented bike and changing its accessories is not automatically equivalent to buying the passenger cruiser. Confirm which parts and load permissions exist for the chosen model.
At 580 lb wet, the Speedmaster is 27 lb above the listed 553 lb Bobber. Both figures use a wet description in this comparison, unlike a comparison that mixes a dry figure with curb mass. The difference says something about parking effort and transport loading; it does not by itself predict steering feel or braking distance. For a ramp or carrier, use the complete motorcycle's actual mass and the equipment's published rating.
Other models in this reference: Triumph Bonneville T100, Triumph Speed Twin 900, Triumph Bonneville T120.