By model year
Honda CRF450RX
2026 vs 2027
2 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
5 different6 the same0 printed differently7 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 | 2026 | 2027 |
|---|---|---|---|
| Stock front sprocket | Not comparedSpec sheet only | 13TManufacturer spec sheet (research) | 13TManufacturer spec sheet (research) |
| Stock rear sprocket | Not comparedSpec sheet only | 50TManufacturer spec sheet (research) | 51TManufacturer spec sheet (research) |
| Chain pitch | Not comparedSpec sheet only | 520Manufacturer spec sheet (research) | 520Manufacturer spec sheet (research) |
| Stock final drive ratio | Different on the manuals | 3.846 : 1Owner's manual p. 73 | 3.923 : 1Owner's manual p. 74 |
| Front tire | Same on the manuals | 90/90-21 54MOwner's manual p. 72 | 90/90-21 54MOwner's manual p. 73 |
| Rear tire | Same on the manuals | 120/90-18 65MOwner's manual p. 72 | 120/90-18 65MOwner's manual p. 73 |
| Fork | Not comparedSpec sheet only | 49mm inverted Showa coil-spring forkManufacturer spec sheet (research) | 49mm inverted Showa forkManufacturer spec sheet (research) |
| Fork travel | Not comparedSpec sheet only | 310 mm (12.2 in)Manufacturer spec sheet (research) | 310 mm (12.2 in)Manufacturer spec sheet (research) |
| Shock travel | Not comparedSpec sheet only | 307 mm (12.1 in)Manufacturer spec sheet (research) | 305 mm (12.0 in)Manufacturer spec sheet (research) |
| Engine oil spec | Same on the manuals | SAE 10W-30, JASO T 903 MAOwner's manual p. 73 | SAE 10W-30, JASO T 903 MAOwner's manual p. 74 |
| Engine oil capacity | Different on the manuals | 1000 ml (33.8 fl oz)Owner's manual p. 73 | 1070 ml (36.2 fl oz)Owner's manual p. 74 |
| Coolant capacity | Same on the manuals | 1080 ml (36.5 fl oz)Owner's manual p. 73 | 1080 ml (36.5 fl oz)Owner's manual p. 74 |
| Fuel capacity | Different on the manuals | 8 L (2.11 gal)Owner's manual p. 72 | 7.1 L (1.88 gal)Owner's manual p. 73 |
| Tire pressure (off-road) | Same on the manuals | 15 psi (100 kPa) front and rearOwner's manual p. 72 | 15 psi (100 kPa) front and rearOwner's manual p. 73 |
| Spark plug and gap | Same on the manuals | NGK SILMAR9A-9S, gap 0.80-0.90 mmOwner's manual p. 74 | NGK SILMAR9A-9S, gap 0.80-0.90 mmOwner's manual p. 75 |
| Seat height | Different on the manuals | 958 mm (37.7 in)Owner's manual p. 72 | 951 mm (37.4 in)Owner's manual p. 73 |
| Wheelbase | Different on the manuals | 1478 mm (58.2 in)Owner's manual p. 72 | 1490 mm (58.7 in)Owner's manual p. 73 |
| Weight | Not comparedSpec sheet only | 116.1 kg (256 lb)Manufacturer spec sheet (research) | 108.9 kg (240 lb)Manufacturer spec sheet (research) |