Triumph Bonneville T120 2021 vs. Triumph Street Twin 2018

The Triumph Bonneville T120 2021 and the Triumph Street Twin 2018 are both naked bikes from Triumph, but they have some key differences in terms of their technical specifications and strengths.

Starting with the technical specifications, both bikes have the same engine type, in line crankpin offset, and fuel system, injection. However, the Bonneville T120 has a larger engine displacement of 1200ccm compared to the Street Twin's 900ccm. This results in the Bonneville T120 having more engine power at 80 HP compared to the Street Twin's 55 HP. Similarly, the Bonneville T120 has more torque at 105 Nm compared to the Street Twin's 80 Nm.

In terms of suspension, both bikes have a telescopic fork front suspension and a swing arm rear suspension with dual shock absorbers. The brand and adjustment of the suspension components are the same for both bikes, with Kayaba being the brand and preload being the adjustment. The material of the rear suspension is also the same, steel.

Triumph Bonneville T120 2021

Both bikes have a steel frame, but the Bonneville T120 has a double cradle frame type while the Street Twin has a central tube frame type. This could result in differences in handling and stability.

For brakes, both bikes have double disk front brakes with a diameter of 310 mm and double piston calipers. However, the brands differ, with the Bonneville T120 having Brembo brakes and the Street Twin having Nissin brakes.

Both bikes have advanced rider assistance systems in the form of ABS.

In terms of dimensions and weights, the front and rear tire widths and diameters are the same for both bikes. The Bonneville T120 has a slightly longer wheelbase at 1450 mm compared to the Street Twin's 1415 mm. The seat height is also higher for the Bonneville T120 at 790 mm compared to the Street Twin's 750 mm. Additionally, the Bonneville T120 has a larger fuel tank capacity at 14.5 liters compared to the Street Twin's 12 liters.

Triumph Street Twin 2018

Moving on to the strengths of each bike, the Bonneville T120 2021 is praised for its classic forms in their purest form, superior engine, ergonomics that fit almost everyone, high quality of workmanship and materials, and comfortable ride. On the other hand, the Street Twin 2018 is praised for its engine with plenty of torque in the middle, good brakes, pleasant ergonomics, current electronic features, smooth clutch, authentic look, and fair offer.

However, both bikes also have their weaknesses. The Bonneville T120 2021 has limited lean angle clearance and the chassis reaches its limits at a brisk pace. The Street Twin 2018 requires manual force for the brakes and has fittings with a small digital field.

In conclusion, the Triumph Bonneville T120 2021 and the Triumph Street Twin 2018 have some notable differences in terms of their technical specifications and strengths. The Bonneville T120 has a larger engine displacement, more power and torque, and a higher seat height and fuel tank capacity. It is praised for its classic design and superior engine. On the other hand, the Street Twin has a slightly smaller engine and lower power and torque, but it is praised for its torque in the middle, good brakes, and pleasant ergonomics. Both bikes have their own strengths and weaknesses, so it ultimately comes down to personal preference and riding style.