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Triumph 250cc motocross bike — the British brand has boldly entered the world of motocross with a brand‑new 250cc dirt machine ready to hit the market for the 2025 racing season. This launch excites motocross fans everywhere; for a company that’s spent over 110 years perfecting road and adventure motorcycles, this marks Triumph’s first serious step into the competitive MX scene. Developed with legendary racer Ricky Carmichael, the new Triumph 250cc motocross bike is built to take on the pro starting line in 2025.
Engine and Performance
At the core of Triumph 250cc motocross bike is a 249.9cc single-cylinder engine that is stuffed with racing technologies. This liquid-cooled four-stroke engine features a dual overhead camshaft configuration as well as a high ratio of compressible 14.4:1 to produce the ultimate engine scream which can ravage the redline up to the sky. The engine’s first results reveal a power output in the mid-40s horsepower range (around 46–48 hp at peak) which is equal to well-known 250F motocross motorcycles.
The close-ratio 5-speed gearbox powers the dirt directly; Triumph has added an electronic quickshifter for load-free upshifts on the start gate. Even though it is a product of the first generation, testers say the engine runs silky smooth and revs so high! It pulls hard from the very start and has a blast to the top that will facilitate the jump to the triple step. It has become clear that Triumph is indeed accomplished and have ensured that their maiden MX engine components are topnotch and thus can run elbow-to-elbow with leaders in the field.
Chassis and Components
The new Triumph TF 250‑X motocross bike features a lightweight aluminum spine frame that centralizes mass for precision handling. At just 229 lbs (wet), it’s one of the lightest bikes in its class. Premium KYB suspension includes a 48 mm fully adjustable fork with 12.2″ of travel and a high‑spec piggyback rear shock.
The front and rear of the bike are treated to KYB suspension, specifically, the front features a 48mm coil-spring inverted fork which offers 12.2 inches travel and full adjustability, while the rear shock is adjustable as well, with options for high/low-speed compression and rebound. Therefore, the soft setting gives a plush ride through small bumps while big hits can be firmed up.
Brembo more correctly deals with braking with again a 260mm front disc and 220mm rear one therefore the rider’s confidence before transitions and turns is fortified. The 21-inch front/19-inch rear wheel configuration (equipped with sticky motocross knobbies) in addition to that is a found feature of a top-class MX machine.
The Triumph 250cc motocross bike features some key specifications and technologies such as:
Engine: 249cc liquid-cooled DOHC single (~47 hp) with 5-speed transmission and race-tuned ECU
Frame: Aluminum spine frame with a slim ergonomics package for easy weight transfer
Suspension: KYB fully adjustable 48mm fork (12.2” travel) and piggyback shock (12.0” travel) for big jump capability
Brakes: Brembo twin-piston front caliper (260mm rotor) and single-piston rear (220mm) for strong, precise braking
Weight: ~229 lbs (wet) with a compact 1.85-gallon fuel tank – light and flickable in the air
Extras: Electric start, quickshifter for clutchless shifts, and a handlebar-mounted map switch for altering power delivery
Racing Debut and Price
Triumph is not only producing motorcycles for weekend warriors – the brand is going head-to-head in the pro races. Triumph Racing will officially debut the Triumph 250cc motocross bike in the 2025 AMA Pro Motocross Series and possibly the MXGP Championship, validating the machine on the world’s toughest tracks. Testers praise its stability, plush yet firm KYB suspension, and easy corner entry. This grand debut clearly indicates that the bike has been put through the paces and has been validated by world champion riders at some of the planet’s hardest tracks. Off the early test runs especially though, the bike has been praised for its stability, remarkable handling, and a fork that works wonders on the whoops track.
Triumph has certainly put in the time needed for this bike to be top-notch. For amateur riders, the production version of the Triumph 250 MX will be available through select Triumph dealers with a specialist motocross focus. The factory price has been set at around $9,500 USD, which is nearly the same as other premium 250F dirt bikes. The expenditure-cover brand value, but the company also includes a spare parts network and an after-sales service that shares similarities with Japanese and Austrian brands.
The Bottom Line
The Triumph 250cc motocross bike is a historic milestone for the British manufacturer — a blend of craftsmanship, innovation, and racing pedigree. With input from motocross legends, it delivers the soul of a factory race bike wrapped in Triumph’s distinctive yellow graphics and thumping exhaust tone.
Seasoned riders will sex it up the details like the immediate-access air filter and titanium valves but the young racers could be over the moon just riding something other than the orange, green, red, and blue bikes. Triumph is banking a lot on motocross and they seem to be doing it right from the very start. As the 2025 racing season begins, don’t be surprised to see the Triumph logos waving high – the new contender has definitely shown up on the moto field and it’s time to make some noise (both real and metaphorical) in the 250 class.
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