Triumph 350cc Engine Specifications Leaked for Speed, T4, Scrambler, and Thruxton Models

Key performance specifications for Triumph's upcoming 350cc motorcycle range have been leaked ahead of their official launch on April 6, 2026. The new 350cc engines are based on Triumph's existing 400cc models, with only minor reductions in power and torque. This suggests that real-world performance will remain largely unchanged for most riders.

Key Highlights

• Triumph 350cc engine specs leaked ahead of April 2026 launch
• 350cc versions show minor power and torque reductions from 400cc models
• Thruxton 350cc is the most powerful single-cylinder in its segment
• Triumph 400 range currently ranks fifth in 350cc-450cc segment

Triumph 350cc vs 400cc Performance

The Triumph T4 400cc engine produces 31 PS and 36 Nm of torque. It reaches a top speed of 141.4 km/h and accelerates from 0 to 100 km/h in 8.9 seconds. The 0 to 60 km/h sprint takes 3.3 seconds. The new T4 350cc version delivers 29 PS and 31 Nm, a decrease of 2 PS and 5 Nm compared to the 400cc. It achieves a top speed of 137 km/h, with 0 to 60 km/h in 3.5 seconds and 0 to 100 km/h in 9.6 seconds. Despite the reduction, it still outperforms competitors like the Royal Enfield Classic 350, which offers 20.2 PS, 27 Nm, and a 5-speed gearbox.

The Triumph Speed 400cc variant generates 40 PS and 37.5 Nm, with a top speed of 148.7 km/h. It accelerates from 0 to 60 km/h in 3 seconds and from 0 to 100 km/h in 7.4 seconds. The 350cc Speed version produces 37 PS and 32 Nm, a decrease of 3 PS and 5.5 Nm. Its top speed is 147 km/h, with 0 to 60 km/h in 3.1 seconds and 0 to 100 km/h in 8.1 seconds.

Scrambler and Thruxton 350cc Details

The Scrambler 400X/XC 400cc shares its output with the Speed 400cc, at 40 PS and 37.5 Nm. Its top speed is 146.5 km/h, with 0 to 60 km/h in 2.9 seconds and 0 to 100 km/h in 7.4 seconds. The new 350cc Scrambler 400X/XC matches the 350cc Speed's output of 37 PS and 32 Nm. Its top speed is 144 km/h, with 0 to 60 km/h in 3.3 seconds and 0 to 100 km/h in 8.8 seconds.

The Thruxton stands as the most powerful model in Triumph's 400cc lineup, producing 42 PS and 37.5 Nm. It reaches a top speed of 161 km/h, with 0 to 60 km/h in 2.9 seconds and 0 to 100 km/h in 7.5 seconds. The new 350cc Thruxton generates 40 PS and 32 Nm, making it the most powerful single-cylinder 350cc motorcycle in its segment. Its top speed is 157 km/h, with 0 to 60 km/h in 3.6 seconds and 0 to 100 km/h in 8.3 seconds.

Market Impact and Outlook

The introduction of 350cc Triumph models is expected to offer a more accessible price point. This could help Triumph increase its sales in the competitive 350cc motorcycle segment. Currently, the Triumph 400 range ranks fifth among bestselling motorcycles in the 350cc to 450cc category.