Specs compared

Kawasaki KX250F 2027 vs Triumph TF 450-X 2026

Motocross, stock specs side by side. Each value names the page it came from; a blank on either side stays blank.

Printed differently: engine, fork travel, shock travel, seat height and weight. The same on both: front tire and rear tire. Checked 27 Sep 2026 and 16 Oct 2026.

SpecKawasaki KX250F 2027Triumph TF 450-X 2026
EnginePrinted differently249cc 4T450cc 4T
Stock gearing Not yet verified13T / 49TManufacturer spec sheet (research)
Final drive ratio Not yet verified3.77 : 1Calculated from the stock sprockets
Front tireSame80/100-21Manufacturer spec sheet (research)80/100-21Manufacturer spec sheet (research)
Rear tireSame110/90-19Manufacturer spec sheet (research)110/90-19Manufacturer spec sheet (research)
Fork travelPrinted differently305 mm (12.0 in)Manufacturer spec sheet (research)310 mm (12.2 in)Manufacturer spec sheet (research)
Shock travelPrinted differently307 mm (12.1 in)Manufacturer spec sheet (research)305 mm (12.0 in)Manufacturer spec sheet (research)
Seat heightPrinted differently955 mm (37.6 in)Manufacturer spec sheet (research)960 mm (37.8 in)Manufacturer spec sheet (research)
WeightPrinted differently109.2 kg (241 lb)Manufacturer spec sheet (research)108.3 kg (239 lb)Manufacturer spec sheet (research)

Each value shows where it came from. The bike pages list the document, page and date checked. “Printed differently” only says the two documents print different figures; it is not a judgement of either bike.

Stock sizes at MotoSport. Kawasaki KX250F: Front tires 80/100-21 · Rear tires 110/90-19. Triumph TF 450-X: Front tires 80/100-21 · Rear tires 110/90-19. These are affiliate links: we may earn a commission, at no cost to you, and it never changes the specs. Affiliate disclosure.