By model year
Kawasaki KX450
2024 to 2026
3 model-year records side by side. A row is compared only where manual pages print the value; spec-sheet figures are shown but not judged.
On the manual pages
1 different24 the same0 printed differently3 not compared
Different on the manual pages
"Not compared" means fewer than two records have the value from a manual page; it says nothing about whether the bike changed. "Printed differently" marks descriptions (the fork, the oil, pressures with printed conversions) that the manuals word differently; read both before assuming a change.
| Spec | Manual pages | 2024 | 2025 | 2026 |
|---|---|---|---|---|
| Stock front sprocket | Same on the manuals | 13TOwner's manual p. 11 | 13TOwner's manual p. 12 | Not yet verified |
| Stock rear sprocket | Same on the manuals | 50TOwner's manual p. 11 | 50TOwner's manual p. 12 | Not yet verified |
| Chain pitch | Not comparedBlank in a record | 520Owner's manual p. 108 | Not yet verified | Not yet verified |
| Stock chain links | Not comparedBlank in a record | 114Owner's manual p. 108 | Not yet verified | Not yet verified |
| Front rim | Same on the manuals | 21 x 1.60Owner's manual p. 12 | 21 x 1.60Owner's manual p. 13 | Not yet verified |
| Rear rim | Same on the manuals | 19 x 2.15Owner's manual p. 12 | 19 x 2.15Owner's manual p. 13 | Not yet verified |
| Front tire | Same on the manuals | 80/100-21 51MOwner's manual p. 12 | 80/100-21 51MOwner's manual p. 13 | 80/100-21Manufacturer spec sheet (research) |
| Rear tire | Same on the manuals | 120/80-19 63MOwner's manual p. 12 | 120/80-19 63MOwner's manual p. 13 | 120/80-19Manufacturer spec sheet (research) |
| Fork | Same on the manuals | Telescopic fork (upside-down)Owner's manual p. 12 | Telescopic fork (upside-down)Owner's manual p. 13 | 49mm Showa inverted telescopic coil-spring forkManufacturer spec sheet (research) |
| Fork travel | Same on the manuals | 305 mm (12.0 in)Owner's manual p. 12 | 305 mm (12.0 in)Owner's manual p. 13 | 305 mm (12.0 in)Manufacturer spec sheet (research) |
| Shock travel | Same on the manuals | 307 mm (12.1 in)Owner's manual p. 12 | 307 mm (12.1 in)Owner's manual p. 14 | 307 mm (12.1 in)Manufacturer spec sheet (research) |
| Engine oil spec | Same on the manuals | SAE 10W-40; API SG, SH, SJ, SL or SM with JASO MA, MA1 or MA2Owner's manual p. 11 | SAE 10W-40; API SG, SH, SJ, SL or SM with JASO MA, MA1 or MA2Owner's manual p. 12 | Not yet verified |
| Engine oil capacity | Same on the manuals | 900 ml (30.4 fl oz)Owner's manual p. 50 | 900 ml (30.4 fl oz)Owner's manual p. 52 | Not yet verified |
| Coolant capacity | Same on the manuals | 1100 ml (37.2 fl oz)Owner's manual p. 52 | 1100 ml (37.2 fl oz)Owner's manual p. 55 | Not yet verified |
| Fuel capacity | Same on the manuals | 6.2 L (1.64 gal)Owner's manual p. 10 | 6.2 L (1.64 gal)Owner's manual p. 11 | 6.2 L (1.64 gal)Manufacturer spec sheet (research) |
| Fork oil | Different on the manuals | Type Kawasaki Fork Oil A15-00; Amount: Cylinder Unit 248 mL (8.38 US oz.); Outer Tube 321 mL (10.9 US oz.)Owner's manual p. 12 | Type Kawasaki Fork Oil A15-00; Amount: Cylinder Unit 248 mL (8.38 US oz.); Outer Tube KX450M 321 mL (10.9 US oz.)Owner's manual p. 14 | Not yet verified |
| Brake fluid | Same on the manuals | Front Brake Fluid : DOT4 or DOT5.1; Rear Brake Fluid : DOT4Owner's manual p. 117 | Front Brake Fluid : DOT4 or DOT5.1; Rear Brake Fluid : DOT4Owner's manual p. 120 | Not yet verified |
| Coolant type | Same on the manuals | Permanent type of antifreeze (ethylene glycol plus corrosion and rust inhibitor chemicals for aluminum engines and radiators); Water and Antifreeze Mixing Ratio 1:1 (water:antifreeze)Owner's manual p. 52 | Permanent type of antifreeze (ethylene glycol plus corrosion and rust inhibitor chemicals for aluminum engines and radiators); Water and Antifreeze Mixing Ratio 1:1 (water:antifreeze)Owner's manual p. 55 | Not yet verified |
| Fuel octane | Same on the manuals | Antiknock Index 90Owner's manual p. 23 | Antiknock Index 90Owner's manual p. 26 | Not yet verified |
| Idle speed | Same on the manuals | 2 250 – 2 350 r/min (rpm)Owner's manual p. 71 | 2 250 – 2 350 r/min (rpm)Owner's manual p. 74 | Not yet verified |
| Valve clearance | Same on the manuals | Intake 0.08 – 0.12 mm (0.0031 – 0.0047 in.); Exhaust 0.14 – 0.18 mm (0.0055 – 0.0071 in.)Owner's manual p. 99 | Intake 0.08 – 0.12 mm (0.0031 – 0.0047 in.); Exhaust 0.14 – 0.18 mm (0.0055 – 0.0071 in.)Owner's manual p. 102 | Not yet verified |
| Seat height | Not comparedBlank in a record | Not yet verified | Not yet verified | 960 mm (37.8 in)Manufacturer spec sheet (research) |
| Wheelbase | Same on the manuals | 1480 mm (58.3 in)Owner's manual p. 10 | 1480 mm (58.3 in)Owner's manual p. 11 | 1481 mm (58.3 in)Manufacturer spec sheet (research) |
| Weight | Same on the manuals | 112.6 kg (248 lb)Owner's manual p. 10 | 112.6 kg (248 lb)Owner's manual p. 11 | 112.6 kg (248 lb)Manufacturer spec sheet (research) |
| Stock final drive ratio | Same on the manuals | 3.846 : 1Owner's manual p. 11 | 3.846 : 1Owner's manual p. 12 | Not yet verified |
| Tire pressure (off-road) | Same on the manuals | 100 – 125 kPa (1.0 – 1.2 kgf/cm², 14 – 18 psi)Owner's manual p. 160 | 100 – 125 kPa (1.0 – 1.2 kgf/cm², 14 – 18 psi)Owner's manual p. 167 | Not yet verified |
| Chain slack | Same on the manuals | 48 – 54 mm (1.9 – 2.1 in.)Owner's manual p. 105 | 48 – 54 mm (1.9 – 2.1 in.)Owner's manual p. 108 | Not yet verified |
| Spark plug and gap | Same on the manuals | NGK CPR8EB-9Owner's manual p. 10 | NGK CPR8EB-9Owner's manual p. 12 | Not yet verified |