Specs compared

Kawasaki KX125 2004–2008 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, stock gearing, fork travel, shock travel and seat height. The same on both: front tire and rear tire. Checked 26 Sep 2026 and 16 Oct 2026.

SpecKawasaki KX125 2004–2008Triumph TF 250-X 2026
EnginePrinted differently124cc 2T250cc 4T
Stock gearingPrinted differently13T / 51TOwner's manual p. 1-813T / 48TManufacturer spec sheet (research)
Final drive ratio3.923 : 1Owner's manual p. 1-83.69 : 1Calculated from the stock sprockets
Chain pitch520Owner's manual p. 10-4 Not yet verified
Front tireSame80/100-21 51MOwner's manual p. 1-880/100-21Manufacturer spec sheet (research)
Rear tireSame100/90-19 57MOwner's manual p. 1-8100/90-19Manufacturer spec sheet (research)
Fork travelPrinted differently300 mm (11.8 in)Owner's manual p. 1-8310 mm (12.2 in)Manufacturer spec sheet (research)
Shock travelPrinted differently310 mm (12.2 in)Owner's manual p. 1-8305 mm (12.0 in)Manufacturer spec sheet (research)
Premix ratio32:1Owner's manual p. 1-7 Not yet verified
Coolant capacity970 ml (32.8 fl oz)Owner's manual p. 2-18 Not yet verified
Seat heightPrinted differently940 mm (37.0 in)Owner's manual p. 1-7960 mm (37.8 in)Manufacturer spec sheet (research)
Weight Not yet verified104 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 KX125: 520 chains · Front tires 80/100-21 · Rear tires 100/90-19. 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.