Dirt Bikes

2026 Triumph TF 450-X Technical Overview

Features and specifications of Triumph’s first standard-model 450cc motocross bike.

2 hours ago

Triumph’s first 450cc motocross bike came in 2025 in the form of the TF 450-RC Edition, and 2026 is its first year with a standard-model 450cc motocrosser—the TF 450-X. Both machines are similar with the exception of head stays, tires, handlebar, seat cover, and clutch cover. Plus, the TF 450-X features a new Exedy clutch hub and Belleville clutch spring along with a new gearbox selector star. Read on to learn more about the 2026 Triumph TF 450-X and stay tuned to the site to see how the British ride stacks up in its first Dirt Rider 450 Motocross Bike Comparison Test appearance.

MY26 is Triumph’s first with a standard-model 450cc motocross bike—the TF 450-X.Jeff Allen

Its fuel-injected liquid-cooled SOHC four-stroke 450cc single-cylinder engine produces 55.7 hp and 32.9 lb.-ft. of torque on our in-house rear-wheel dyno.Jeff Allen

A small muffler opening and header pipe with vertically integrated resonance chamber help keep decibels down; the TF 450-X is one of the quietest 450cc motocrossers around.Jeff Allen

On the left side of the ProTaper ACF (aluminum/carbon fiber) handlebar is an electronics suite consisting of launch control (LC), quickshift (QS), traction control (TC), and a map switch (M). On the right are engine start and stop buttons combined on a single module.Jeff Allen

Triumph is one of five brands (the others being KTM, Husqvarna, Beta, and TM) to employ a Brembo hydraulic clutch on its 450cc motocrosser.Jeff Allen

Suspension duties are tasked to a KYB Air-Oil Separate (AOS) 48mm closed-cartridge coil-spring fork and KYB shock.Jeff Allen

Unlike the TF 450-RC Edition, which is outfitted with Dunlop Geomax MX34 tires, Triumph specs Pirelli Scorpion MX32 Mid Soft rubber on the TF 450-X.Jeff Allen

Brembo dual-piston front and single-piston rear brake calipers bite onto 260mm and 220mm discs, respectively.Jeff Allen

Bodywork matches that of the TF 250-X.Jeff Allen

Triumph keeps its graphics simple, and the subtle “TF” in the radiator shrouds is a nice touch.Jeff Allen

The 2026 Triumph TF 450-X rolls onto Dirt Rider’s automotive scales at 240 pounds wet.Jeff Allen

2026 Triumph TF 450-X Specs

MSRP:	$10,695
Engine:	SOHC, liquid-cooled single-cylinder; 4 valves
Displacement:	450cc
Bore x Stroke:	95.0 x 63.4mm
Compression Ratio:	13.1:1
Transmission/Final Drive:	5-speed/chain
Dirt Rider Measured Horsepower:	55.7 hp @ 10,400 rpm
Dirt Rider Measured Torque:	32.9 lb.-ft. @ 6800 rpm
Fuel System:	Dell’Orto EFI w/ 44mm throttle body
Clutch:	Wet, multiplate; hydraulic actuation
Frame:	Double-cradle aluminum
Front Suspension:	KYB Air-Oil Separate (AOS) 48mm closed-cartridge coil-spring fork, compression and rebound damping adjustable; 12.2 in. travel
Rear Suspension:	KYB shock, spring preload, high/low-speed compression damping, and rebound damping adjustable; 12.0 in. travel
Front Brake:	Brembo 2-piston caliper, 260mm disc
Rear Brake:	Brembo 1-piston caliper, 220mm disc
Tires, Front/Rear:	Pirelli Scorpion MX32 Mid Soft; 80/100-21 / 110/90-19
Rake/Trail:	27.4°/4.6 in.
Wheelbase:	58.7 in.
Ground Clearance:	N/A
Dirt Rider Measured Seat Height:	37.0 in.
Fuel Capacity:	1.8 gal.
Dirt Rider Measured Wet Weight:	240 lb.
Availability:	Now
Contact:	triumphmotorcycles.com