Specs compared
Kawasaki KX450 2026 vs Suzuki RM-Z450 2027
Motocross, stock specs side by side. Each value names the page it came from; a blank on either side stays blank.
Printed differently: rear tire and weight. The same on both: engine, front tire and seat height. Checked 28 Sep 2026 and 29 Sep 2026.
| Spec | Kawasaki KX450 2026 | Suzuki RM-Z450 2027 |
|---|---|---|
| EngineSame | 449cc 4T | 449cc 4T |
| Chain pitch | Not yet verified | 520Manufacturer spec sheet (research) |
| Front tireSame | 80/100-21Manufacturer spec sheet (research) | 80/100-21 51MOwner's manual p. 6-40 |
| Rear tirePrinted differently | 120/80-19Manufacturer spec sheet (research) | 110/90-19 62MOwner's manual p. 6-40 |
| Fork travel | 305 mm (12.0 in)Manufacturer spec sheet (research) | Not yet verified |
| Shock travel | 307 mm (12.1 in)Manufacturer spec sheet (research) | Not yet verified |
| Engine oil capacity | Not yet verified | 1050 ml (35.5 fl oz)Owner's manual p. 6-26 |
| Coolant capacity | Not yet verified | 1100 ml (37.2 fl oz)Owner's manual p. 3-6 |
| Seat heightSame | 960 mm (37.8 in)Manufacturer spec sheet (research) | 960 mm (37.8 in)Manufacturer spec sheet (research) |
| WeightPrinted differently | 112.6 kg (248 lb)Manufacturer spec sheet (research) | 112 kg (247 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. Suzuki RM-Z450: 520 chains · 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.