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their boundaries. We have all been working so hard to make these new models as agile, fast, and lightweight as possible, refusing to compromise on functionality or usability.”
Precision-Engineered for Enduro Excellence
Triumph has developed a 250cc and 450cc performance racing powertrain, designed for winning performance.
The TF 450-E ' s 450cc single-cylinder, liquid-cooled engine delivers impressive power and torque with a linear power curve, ensuring smooth acceleration across varied conditions, from technical ascents to high-speed straights.
The TF 450-E is designed to excel in high-speed enduro racing, ideal for experienced riders seeking power, speed and versatility on open trails and hills. With its greater low-end and mid-range torque, it tackles hill climbs, sand dunes, and situations requiring less gear shifting with ease. Its smooth, tractable power delivery and controllable, connected engine character ensure riders can feel the bike ' s rear wheel traction and the seamless transfer of power to the ground.
Triumph’ s all-new 250 enduro engine is the most powerful engine in its class, delivering responsive, manageable power with a purposeful character, perfectly suited for technical sections, tight enduro challenges, and ideal for riders seeking fun and accessible performance. Providing 42.3 PS of power and 27.8Nm of torque, with a broad power curve and strong bottom-end, the TF 250-E excels in slow-speed technical sections and drives through to a powerful top-end at 12,800rpm.
Both powertrains have been developed to have more inertia than the motocross engine, providing a more stable, tractable power delivery across diverse, unpredictable race conditions. This is complemented by the six-speed Exedy racing clutch, which allows smooth, clutchless upshifts, maintaining momentum in tight, technical sections.
Advanced fuel injection and ignition systems manage power efficiently, ensuring instant throttle response and reliable performance throughout demanding rides. A bespoke Dellorto 44mm throttle body provides an air bypass system for cold starts and a manually adjustable idle speed.
Del West titanium valves and a forged König aluminium piston ensure consistent performance during prolonged high-RPM operation, significantly reducing servicing requirements.
For the TF 450-E, the gudgeon pin and rockers are further enhanced with Diamond Like Carbon( DLC) coatings, which improves durability and reduces friction. The high-capacity radiator and auxiliary fan combined with tool-free Dual-stage filter provided by Twin-air, provide consistent engine cooling, ensuring reliable power delivery on long, demanding rides.
Athena Engine Management System Triumph and Athena have combined their extensive off-road experience to create a perfect synergy, resulting in the development of new software strategies with a strong emphasis on drivability and tractability. The engine management system for the TF250-E and TF450-E features completely bespoke software. This new system benefits from co-developed mapping and traction control strategies, specifically tailored by Triumph and Athena to enhance performance and reliability.
Dual Engine Maps adapt performance for different conditions at the touch of a button giving riders the edge to adapt and excel in varying race conditions. Riders can switch between two distinct engine maps on the fly. One for aggressive performance, the other for smoother, more controlled delivery on technical terrain. Additional maps can also be added with the optional Wi-Fi module and the Triumph MX Tune Pro app.
Exhaust System
The lightweight stainless steel exhaust system on the TF 250-E boasts an integrated Helmholtz resonator in the header pipe, enhancing cylinder evacuation and performance.
The TF 450-E features a side-resonator in the silencer, specifically designed for targeted noise attenuation, resulting in a deep, powerful exhaust note.
Lightweight Aluminium Frame Both models feature Triumph’ s unique, lightweight aluminium spine frame, with optimised mass, stiffness, and a low centre of gravity. This provides exceptional agility, enhancing high-speed stability, and delivering sharp directional control and confidence. Postfabrication machining enhances dimensional accuracy while the frame also features in-house hand TIG-welded craftsmanship.
Advanced Suspension System
The fully adjustable KYB coil-sprung 48mm forks and 3-way adjustable linkage-driven rear suspension are specifically tuned for Enduro challenges, ensuring responsive control, excellent power transfer and maximum traction in demanding conditions. With a reduction of 10mm compared to Triumph’ s motocross models and enhanced settings, it offers an outstanding balance between handling and bump absorption, while minimising pitch during cornering.
Easy to set up and service, this market-leading
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