Used Triumph Bonneville: Classic Bike Prices

The Triumph Bonneville name carries considerable weight in British motorcycling. The modern Bonneville family, built in Hinckley, Leicestershire, has been a steady seller in the UK since the early 2000s. Used examples are widely available across the country, and prices are generally honest given the strong supply of second-hand bikes.

The Modern Bonneville Family

Triumph relaunched the Bonneville in 2001 with a 790cc air-cooled parallel twin. This bike and its derivatives formed the core of the range until 2016, when a major overhaul brought water-cooling, larger displacement options, and a revised frame. The current family includes several variants, all based around a common platform:

  • Bonneville T100: The entry-level classic, 900cc water-cooled twin
  • Bonneville T120: Higher specification with more power and finish, 1200cc twin
  • Bonneville Bobber: Chopper-influenced styling, single seat, 1200cc engine
  • Thruxton/Thruxton RS: Cafe racer-styled variant, 1200cc high-output engine
  • Scrambler 900 and 1200: Adventure-influenced styling with increased ground clearance
  • Speed Twin and Speed Twin 1200: More performance-focused classic roadster

This guide focuses on the T100, T120, and Thruxton as the most commonly traded variants in the used market.

Used Prices: What to Expect

Pre-2016 Air-Cooled Models

  • Bonneville 865 (2001-2015): £3,000 to £5,500 for well-kept examples
  • Thruxton 865 (2004-2015): £4,000 to £6,500 for original condition bikes

Post-2016 Water-Cooled Models

  • T100 900 (2017 onwards): £5,000 to £7,000
  • T120 1200 (2016 onwards): £6,000 to £8,500 for standard condition
  • Thruxton 1200 (2016 onwards): £7,000 to £9,500
  • Thruxton RS (2020 onwards): £8,500 to £11,000

The air-cooled 865cc models have a devoted following and prices reflect this. However, the 2016 onwards water-cooled range is a more modern motorcycle in every respect, with better power, improved fuel injection, and updated electronics.

Pre-2016 vs Post-2016: Which to Buy?

The pre-2016 air-cooled 865 is a simpler machine. It is easier to work on at home, has a robust following among independent mechanics, and parts availability is good. The riding experience is more raw and the engine requires more frequent attention, but many riders appreciate this.

The 2016 onwards water-cooled variants are refined, smooth, and considerably faster, particularly the 1200cc models. Ride-by-wire throttle, traction control, and ABS are fitted as standard on most variants. If you plan to use the bike regularly in all weather conditions, the water-cooled range is the more practical choice.

What to Inspect

Engine

On the pre-2016 models, check for oil leaks around the cylinder head gaskets, which can weep on older examples. The engine should start easily when cold and settle into a steady idle within a minute or two. Some cam chain rattle on cold start-up is normal but should diminish as the engine warms.

On water-cooled models, check the coolant level and inspect hoses for any signs of cracking or swelling. These engines are generally reliable but benefit from regular coolant changes every two to three years.

Electrics

On pre-2016 bikes, check for any corroded or poorly repaired wiring, particularly around the battery housing and instrument area. On later models, ensure the ride-by-wire throttle responds smoothly and that the dash displays correctly with no warning lights persisting after start-up.

Customisation

The Bonneville family is heavily customised by owners, which can be positive or negative. Triumph and a wide range of accessory suppliers offer quality period-correct parts. However, some bikes have been modified with cheaper aftermarket components that affect reliability or safety. Check that any non-standard components are from reputable suppliers and have not compromised the electrical system or structural integrity.

Rust

Some steel components on older examples can show surface rust if the bike has been stored poorly or used through multiple winters without protection. Check the frame around the steering head and under the tank area. Minor surface rust is cosmetic, but heavier corrosion on structural components is a concern.

Running Costs

The Bonneville family is relatively affordable to run. Fuel consumption is around 50 to 60mpg in mixed use. Servicing is straightforward at an independent, with an annual service typically costing £150 to £250. Triumph dealers charge more, usually £250 to £400 for a full service. Tyres such as Metzeler Roadtec 01 or Pirelli Angel GT II cost around £180 to £250 for a pair fitted.

Insurance is generally reasonable for experienced riders. A clean licence with five or more years of no-claims history on a T120 typically results in premiums of £200 to £400 annually, making it an accessible bike to insure compared to more powerful machinery.

Questions to Ask

  • Has the bike been stored indoors or outside during winter months?
  • Is all original documentation present including the V5C?
  • On pre-2016 bikes: when were the valve clearances last checked?
  • On water-cooled models: has the coolant been changed to schedule?
  • Are any non-standard components from Triumph or known specialist suppliers?

Summary

The modern Triumph Bonneville family offers genuine choice across different price points and riding styles. Whether you choose the simpler air-cooled 865 or the more capable water-cooled 1200, prioritise service history and a genuine inspection over headline mileage figures. A looked-after Bonneville is a reliable and characterful machine that holds its value reasonably well in the UK market.

Frequently asked questions

Is a used triumph bonneville: classic bike prices a sensible used buy in the UK?

It can be, provided the service history, consumables, ownership records and any known model-specific issues check out. Always compare the asking price with similar UK listings rather than relying on the seller's estimate.

What should I check before paying a deposit?

Check the V5C, MOT history, service evidence, tyre age, brake condition, HPI status and signs of crash damage. For electric bikes, ask for battery health information before travelling.

Is dealer stock safer than a private sale?

A dealer usually costs more but gives stronger consumer protection. A private sale can be cheaper, but you need to inspect the bike properly and confirm the seller has the right to sell it.

Related Mobeo guides

If you are comparing more than one used vehicle, these guides are also worth reading before you arrange a viewing.