The Triumph A2 family has expanded with two new offshoots for 2026, the Tracker 400 and Thruxton 400. Both bikes share the same TR-series engine, but with subtle technical tweaks and styling adjustments, each model now sits at the head of Triumph's A2 range.
This review will cover the shared technical details and features of both bikes, before focusing on individual models in a separate report.
At the core of both bikes is Triumph's familiar 398cc TR-series engine, with capacity, bore, and stroke remaining unchanged. However, a new cam and revised timing have helped bump peak power to 41.4 bhp at 9,000 rpm, paired with 27 lb-ft of torque arriving at 7,500 rpm.
The decision not to chase the full 47bhp A2 ceiling was made to prioritize mid-range performance, as riders spend more time on the road than in high-speed applications.
The Tracker gains a small tweak to its chassis geometry, resulting in a wheelbase of 1371 mm and a rake angle of 24.4 degrees. It also features Pirelli MT60 RS flat-track style tyres, while the Thruxton 400 has sportier Pirelli Rosso Corsa IV rubber.
Both bikes share the same underlying hardware, including a strong 4-piston ByBre caliper, ride-by-wire throttle, and switchable traction control. The gearbox is also identical, providing a smooth and light shifting experience.

The higher-output 'HP' version of the TR-series engine is reserved for these two models, while the Speed and Scrambler continue with a slightly softer 39.5bhp setup.
Price-wise, the Tracker lands at £5,745, with the more premium-styled Thruxton nudging up to £5,995. Colour options vary between the two models, offering riders a choice of stylish finishes.
The Tracker's upright riding position sets it apart from its sibling, providing a unique experience for those seeking a sportier ride.

With the addition of these new models, Triumph has expanded its A2 family, catering to riders who want a more aggressive and performance-oriented bike.
The introduction of the Tracker 400 and Thruxton 400 expands Triumph's A2 family, catering to riders seeking a more sporty experience.







