Specs compared
Kawasaki KX250FX 2027 vs Kawasaki KX450X 2026
Enduro, 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, engine oil capacity, coolant capacity, seat height and weight. The same on both: stock gearing, final drive ratio, front tire, fork travel and shock travel. Checked 16 Oct 2026.
| Spec | Kawasaki KX250FX 2027 | Kawasaki KX450X 2026 |
|---|---|---|
| EnginePrinted differently | 249cc 4T | 449cc 4T |
| Stock gearingSame | 13T / 50TOwner's manual p. 12 | 13T / 50TOwner's manual p. 12 |
| Final drive ratioSame | 3.846 : 1Owner's manual p. 12 | 3.846 : 1Owner's manual p. 12 |
| Front tireSame | 80/100-21 51MOwner's manual p. 13 | 80/100-21 51MOwner's manual p. 13 |
| Rear tirePrinted differently | 110/100-18 64MOwner's manual p. 13 | 120/90-18 65MOwner's manual p. 13 |
| Fork travelSame | 305 mm (12.0 in)Owner's manual p. 1-3 | 305 mm (12.0 in)Owner's manual p. 1-3 |
| Shock travelSame | 307 mm (12.1 in)Owner's manual p. 1-3 | 307 mm (12.1 in)Owner's manual p. 1-3 |
| Engine oil capacityPrinted differently | 950 ml (32.1 fl oz)Owner's manual p. 50 | 900 ml (30.4 fl oz)Owner's manual p. 52 |
| Coolant capacityPrinted differently | 940 ml (31.8 fl oz)Owner's manual p. 53 | 1100 ml (37.2 fl oz)Owner's manual p. 55 |
| Seat heightPrinted differently | 945 mm (37.2 in)Manufacturer spec sheet (research) | 950 mm (37.4 in)Manufacturer spec sheet (research) |
| WeightPrinted differently | 110.3 kg (243 lb)Owner's manual p. 1-2 | 113.4 kg (250 lb)Owner's manual p. 1-2 |
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 KX250FX: Front tires 80/100-21 · Rear tires 110/100-18. Kawasaki KX450X: Front tires 80/100-21 · Rear tires 120/90-18. These are affiliate links: we may earn a commission, at no cost to you, and it never changes the specs. Affiliate disclosure.