Specs compared

Kawasaki KX450 2026 vs Triumph TF 250-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, rear tire, fork travel, shock travel and weight. The same on both: front tire and seat height. Checked 29 Sep 2026 and 16 Oct 2026.

SpecKawasaki KX450 2026Triumph TF 250-X 2026
EnginePrinted differently449cc 4T250cc 4T
Stock gearing Not yet verified13T / 48TManufacturer spec sheet (research)
Final drive ratio Not yet verified3.69 : 1Calculated from the stock sprockets
Front tireSame80/100-21Manufacturer spec sheet (research)80/100-21Manufacturer spec sheet (research)
Rear tirePrinted differently120/80-19Manufacturer spec sheet (research)100/90-19Manufacturer 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 heightSame960 mm (37.8 in)Manufacturer spec sheet (research)960 mm (37.8 in)Manufacturer spec sheet (research)
WeightPrinted differently112.6 kg (248 lb)Manufacturer spec sheet (research)104 kg (229 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 KX450: Front tires 80/100-21 · Rear tires 120/80-19. Triumph TF 250-X: Front tires 80/100-21 · Rear tires 100/90-19. These are affiliate links: we may earn a commission, at no cost to you, and it never changes the specs. Affiliate disclosure.