Following the debut of two motocross models last year, Triumph is now lifting the cover off a new pair of enduro machines —  the TF 250-E and TF 450-E. Although based on the motocross bikes, the latest models receive engine refinements, chassis modifications and electronics specifically developed to tackle the more diverse conditions of enduro riding.

Built entirely by Triumph in close collaboration with five-time World Champion Iván Cervantes and four-time World Enduro Champion Paul Edmondson, the TF 250-E and TF 450-E offer more inertia than the motocross engine, providing a more stable, tractable power delivery across unpredictable race conditions. This is complemented by the six-speed Exedy racing clutch, which allows smooth, clutchless upshifts, maintaining momentum in tight, technical sections.

At the heart of the TF 450-E is a 450cc single-cylinder, liquid-cooled engine pumping out 57.8 horsepower and 36.36 ft-lbs of torque. According to Triumph, this model 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. 

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The gudgeon pin and rockers are further enhanced on the 450 model 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 to ensure reliable power delivery on long, demanding rides.

In turn, its smaller 250 enduro sibling boasts the most powerful engine in its class, delivering responsive, manageable power ideal for riders seeking fun and accessible performance. Providing 41.7 HP and 20.5 ft-lb 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 12,800 RPM.

Triumph states both models feature advanced fuel injection and ignition systems that manage power efficiently, ensuring instant throttle response and reliable performance throughout demanding rides. A bespoke Dellorto 1.7” (44mm) throttle body provides an air bypass system for cold starts and a manually-adjustable idle speed. Additionally, Del West titanium valves and a forged König aluminum piston ensure consistent performance during prolonged high-RPM operation, significantly reducing servicing requirements.

With more fuel capacity than the motocrossers, the 2.2 gallon (8.3 liter) fuel tank on both the 250 and 450 models provides more range for long laps.

Athena Engine Management System

Triumph and Athena have combined their extensive off-road experience to develop new software strategies with a strong emphasis on drivability and tractability. The engine management system for the TF 250-E and TF 450-E features completely bespoke software. 

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. 

Chassis

Rolling on 21”/18” wheels, both models feature Triumph’s lightweight aluminum spine frame, with optimized mass, stiffness, and a low center of gravity. Post-fabrication machining enhances dimensional accuracy while the frame also features in-house hand TIG-welded craftsmanship.

Out front the new enduro machines deliver 11.8 inches of travel through the fully-adjustable KYB coil-sprung 1.9” (48mm) forks, while a 3-way adjustable linkage-driven shock offers 12.3 inches of travel out back. Enduro-specific swingarm geometry helps deliver accurate front-end feedback, facilitating rapid adjustments to navigate obstacles.

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.

Rider-focused technology

This can be accessed using intuitive handlebar-mounted controls featuring illuminated buttons for quick and easy adjustments, while the digital speedo screen provides real-time data, including engine temperature, trip information, and gear position.

The advanced traction control system monitors rear-wheel slip and modulates power output to provide consistent grip on unpredictable surfaces, while the optimized launch control manages torque delivery to maximize traction off the line, helping riders achieve consistent, competitive starts. The Triumph-designed quickshifter enables seamless, clutchless upshifts between second and sixth gear for uninterrupted power delivery and preserves momentum during race-critical sections.

More premium standard components include the Galfer performance braking system with 10.2” (260mm) front brake disc and 8.7” (220mm) rear brake disc, combined with Brembo twin .94” (24mm) piston floating front caliper, a single 1.02” (26mm) piston floating rear caliper and adjustable span brake lever.

Both models are fitted with Michelin Enduro 2 tires, featuring an innovative tread pattern that provides better grip and traction, designed for diverse terrains (soft to hard) and conditions (mud to dry). The D.I.D DirtStar 7000 series aluminum rims, with a black anodized finish and Triumph-designed lightweight cast and machined aluminum hubs completes the look.

Ergonomics 

According to Triumph, the TF 250-E and TF 450-E have been designed to maximize both performance and rider comfort. Pro Taper ACF Carbon Core handlebars with adjustable mounts enable riders to personalize the fit and feel, perfecting the positioning between the handlebar, seat, and footpegs. This can minimize fatigue, enhance control during sharp turns, and reduce rider strain during prolonged standing. The ODI half-waffle lock-on grips offer exceptional hold and durability, ensuring control in all conditions.

A 37.6” (955mm) seat height provides optimal clearance along with a manageable stand-over for technical sections, while a non-slip Pyramid seat offers excellent grip and a rubbery consistency to improve positioning in both dry and wet conditions. The ergonomic design and high-quality foam padding also allows racers to ride longer without discomfort. In addition, Triumph says the seat cover material is highly durable and resistant to wear and tear, making it ideal for off-road conditions.

Racing-inspired graphics in Triumph Performance Yellow, Black and White and magnesium engine covers, which also make trackside servicing easier, complete the look.

Availability & Pricing

The TF 250-E will start from $9,795 USD / $12,395 CAD and the TF 450-E will start from $10,795 USD / $13,295. Orders can be placed now at Triumph Dealers with bikes available for delivery from June, 2025. 

Although the new models are equipped with LED lighting, they will hit US shores as race-spec only bikes. “They will not be street legal and will not include blinkers, license plate holder, nor be homologated for street use. Triumph is actively working to continually grow our off-road and on-road model offerings,” explained Triumph.

TF 250-E Specs

Engine Type:	1-cylinder, 4-stroke SOHC
Capacity:	249.9 cc
Bore:	78mm
Stroke:	52.3mm
Compression:	14.4:1
Max Power EC:	41.7 hp (42.3 PS)
Max Torque EC:	20.5 ft-lb (27.8 Nm)
Fuel System:	Dellorto 44mm Cable Throttle, EFI
Exhaust:	Single Silencer
Final Drive:	13/52
Clutch:	Aluminum separate basket Wet; Multiple Disc Hydraulic
Gearbox:	6 speed
Frame:	Aluminum, Spine
Swingarm:	Aluminum Fabrication
Front Wheel:	21” x 1.6”
Rear Wheel:	18” x 2.15”
Front Tire:	90/90 – 21
Rear Tire:	140/90 – 18
Front Suspension:	KYB 48mm Coil Spring Fork, Compression/Rebound Adjustment, 300mm Travel
Rear Suspension:	KYB Coil, Compression Adjustment (High and Low Speed), Rebound Adjustment, 313mm Travel
Front Brakes:	Single, Ø260 Galfer Disc, Brembo, 2xØ24 pistons, floating caliper
Rear Brakes:	Single, Ø220 Galfer Disc, Brembo, 1xØ26 pistons, floating caliper
Instruments:	Speedo, Multi-Function Switch Cubes
Width Handlebars:	836mm
Height Without Mirror:	1264mm
Seat Height:	955mm (37.6″)
Wheelbase:	1488mm [1497mm]*
Rake:	26.8 º
Trail:	113
Tank Capacity:	8.3 liters (2.2 gallons)
Wet Weight:	114.2 kg (251.8 lbs)
Standard equipment:	Traction control, Launch control, Quick shifter, Dual engine maps, D.I.D. DirtStar aluminium wheels, Michelin Enduro 2 tires, Pyramid non-slip seat cover, Galfer discs, Neken triple clamps, Pro taper bars, ODI grips.
Price:	From $9,795.00

TF 450-E Specs

Engine Type:	1-cylinder, 4-stroke SOHC
Capacity:	449.9 cc
Bore:	95mm
Stroke:	95mm
Compression:	12.8: 1
Max Power EC:	57.8 HP (58.6 PS)
Max Torque EC:	35.6 lb-ft (49.3 Nm)
Fuel System:	Dellorto 44mm Cable Throttle, EFI
Exhaust:	Single Silencer
Final Drive:	13/51
Clutch:	Steel integrated basket, Wet, Multiple Disc Hydraulic
Gearbox:	6 speed
Frame:	Aluminum, Spine
Swingarm:	Aluminum Fabrication
Front Wheel:	21” x 1.6”
Rear Wheel:	18” x 2.15”
Front Tire:	90/90 – 21
Rear Tire:	140/90 – 18
Front Suspension:	KYB 48mm Coil Spring Fork, Compression/Rebound Adjustment, 300mm Travel
Rear Suspension:	KYB Coil, Compression Adjustment (High and Low Speed), Rebound Adjustment, 313mm Travel
Front Brakes:	Single, Ø260 Galfer Disc, Brembo, 2xØ24 pistons, floating caliper
Rear Brakes:	Single, Ø220 Galfer Disc, Brembo, 1xØ26 pistons, floating caliper
Instruments:	Speedo, Multi-Function Switch Cubes
Width Handlebars:	836mm
Height Without Mirror:	1264mm
Seat Height:	955mm (37.6″)
Wheelbase:	1488mm [1497mm]*
Rake:	26.8 º
Trail:	113
Tank Capacity:	8.3 (2.2 gallons)
Wet Weight:	116.7 kg (257.3 lbs)
Standard equipment:	Traction control, Launch control, Quick shifter, Dual engine maps, D.I.D. DirtStar aluminum wheels, Michelin Enduro 2 tires, Pyramid non-slip seat cover, Galfer discs, Neken triple clamps, Pro taper bars, ODI grips
Price:	From $10,795.00