Key performance
Technical specifications
Engine
- Displacement
- 1200 cc
- Power
- 80.0 ch @ 6550 tr/min (58.8 kW)
- Torque
- 104.9 Nm @ 3100 tr/min
- Engine type
- Bicylindre parallèle, 4 temps
- Cooling
- combiné air / eau
- Compression ratio
- 10:1
- Bore × stroke
- 97.6 x 80 mm
- Valves/cylinder
- 4
- Camshafts
- 1 ACT
- Fuel system
- Injection
- Starter
- électrique
Chassis
- Frame
- tubulaire en acier
- Gearbox
- boîte à 6 rapports
- Final drive
- Chaîne
- Front suspension
- Fourche téléhydraulique Ø 41 mm, déb : 120 mm
- Rear suspension
- 2 amortisseurs latéraux, déb : 120 mm
Brakes
- Front brakes
- Freinage 2 disques Ø 310 mm, étrier 2 pistons
- Rear brakes
- Freinage 1 disque Ø 255 mm, étrier 2 pistons
- Front tyre
- 100/90-18
- Front tyre pressure
- 2.20 bar
- Rear tyre
- 150/70-17
- Rear tyre pressure
- 2.50 bar
Dimensions
- Seat height
- 785.00 mm
- Seat type
- Selle biplaces
- Fuel capacity
- 14.50 L
- Weight
- 243.00 kg
- Dry weight
- 224.00 kg
- New price
- 13 200 €
Overview
Sixty years. That's the kind of milestone that deserves more than a cake and a few candles. Triumph therefore brought out the silverware — literally — to celebrate six decades of Bonneville with a limited edition of 900 units dubbed the Diamond. The figure is no accident: sixty years of production places a motorcycle in a category of its own, somewhere between founding myth and the definitive benchmark of the global neo-classic segment.

The T120 Diamond distinguishes itself through calculated restraint. Where the fiftieth-anniversary Bonneville 865 T100 had dressed itself in a blue and orange that turned heads, this Diamond edition opts for a pearlescent white that lets the details speak rather than the raw colour. The greyed Union Jack on the tank, the chromed engine covers, the carefully executed badges and tank emblem: everything comes together as a coherent, grown-up package that speaks more to enthusiasts than to passers-by. A certificate signed by Nick Bloor, Triumph's CEO, accompanies each machine. It's the kind of attention that flatters the collector's ego and justifies, at least symbolically, the €13,200 asking price.
Beneath the elegant livery, nothing revolutionary — and that's perfectly fine. The 1,200 cc parallel twin delivers 80 horsepower at 6,550 rpm and, more importantly, 104.9 Nm of torque from as low as 3,100 rpm. It is this early torque that defines the character of the machine: a smooth, rounded, jerk-free power delivery that never requires chasing the rev counter to make genuine progress. Measured against a Royal Enfield Interceptor 650 or a Honda CB1100, the Bonneville operates in a different league of finish and onboard electronics, with its riding modes, ABS, traction control, and heated grips. At 243 kg fully fuelled, it is not the lightest of its generation, but the 785 mm seat height remains accessible for a rider of average build.
The tubular steel frame and suspension — a 41 mm fork up front and twin lateral shock absorbers with 120 mm of travel on each side — make no claim to sporting performance. There is no point seeking limit-pushing riding sensations from a machine conceived for open roads and brisk Sunday rides. The claimed top speed of 190 km/h is more than adequate, the six-speed gearbox is pleasant, and the chain final drive is entirely conventional. These are not shortcomings; they are a deliberate positioning that targets the over-forty enthusiast who values history, British aesthetics, and modern equipment dressed in period costume.
900 units, an immaculate white finish, chrome in all the right places, and a parallel twin that has never struck a false note. The Diamond does not reinvent the Bonneville — it celebrates it with the dignity that sixty years on the world's order books demands. For those seeking a motorcycle to live with as much as to admire, it is a compelling proposition, even if the price warrants careful consideration before signing the cheque.
Standard equipment
- Assistance au freinage : ABS de série
Practical info
- La moto est accessible aux permis : A
- Fabriqué en 900 exemplaires
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