2023 Honda CRF450R suspension sag & service guide
By the Garagely suspension teamUpdated 2026-07-28
For the 2023 Honda CRF450R (motocross), aim for fork rider (race) sag of 25-30% of travel and fork static sag of 10-16%. At the rear, target shock rider sag of 30-34% and shock static sag of 8-14%. These are percentage-of-travel starting points for the bike's discipline, not exact millimetre settings. Set sag first, then fine-tune the clickers from the stock baselines below, and re-check after any change.
Starting points, not exact settings. Sag targets and spring-rate estimates are reference values that vary by rider weight, model, and conditions. Verify against your owner's manual, dial them in to your own feel, and re-check after any change. Suspension affects handling and safety; consult a qualified suspension technician if unsure.
Specification and setup data below is provided in English from the shared knowledge base; numbers are not translated.
Suspension sag targets
Fork (front)
- Rider (race) sag
- 25-30%
- Static (free) sag
- 10-16%
Shock (rear)
- Rider (race) sag
- 30-34%
- Static (free) sag
- 8-14%
Source: Suspension tuning reference (sag-first method; Race-Tech-style spring estimate).
Adjuster baselines
| Component | Adjuster | Stock baseline | Range |
|---|---|---|---|
| fork | compression | 8.0 clicks | 1.0-16.0 clicks |
| fork | rebound | 9.0 clicks | 1.0-16.0 clicks |
| fork | spring | 5.0 N/mm | 4.8-5.2 N/mm |
| shock | compression hs | 3.0 turns | 0.0-3.5 turns |
| shock | compression ls | 9.0 clicks | 1.0-13.0 clicks |
| shock | preload | 237.0 mm | 230.0-239.0 mm |
| shock | rebound | 7.0 clicks | 1.0-17.0 clicks |
| shock | spring | 56.0 N/mm | 54.0-58.0 N/mm |
Starting points, not exact settings. Sag targets and spring-rate estimates are reference values that vary by rider weight, model, and conditions. Verify against your owner's manual, dial them in to your own feel, and re-check after any change. Suspension affects handling and safety; consult a qualified suspension technician if unsure.
Service intervals
| Service | Mileage | Hours | Time |
|---|---|---|---|
| air | n/a | 2.5 h | n/a |
| brake | n/a | n/a | 730 d |
| brakepad front | n/a | 2.5 h | n/a |
| brakepad rear | n/a | 2.5 h | n/a |
| chain | n/a | 7.5 h | n/a |
| coolant | n/a | n/a | 730 d |
| fork | n/a | 22.5 h | n/a |
| fuelsys efi | n/a | 7.5 h | n/a |
| oil | n/a | 15.0 h | n/a |
| oilfilter | n/a | 15.0 h | n/a |
| spoke front | n/a | 2.5 h | n/a |
| spoke rear | n/a | 2.5 h | n/a |
| valve | n/a | 15.0 h | n/a |
Starting points, not exact settings. Sag targets and spring-rate estimates are reference values that vary by rider weight, model, and conditions. Verify against your owner's manual, dial them in to your own feel, and re-check after any change. Suspension affects handling and safety; consult a qualified suspension technician if unsure.
Key specifications
- Engine oil
- Honda 4-stroke motorcycle oil API Service Classification SJ or higher (excluding Energy Conserving/Resource Conserving); SAE 10W-30; JASO T 903 standard MA
- Oil capacity
- 1000 ml
- Coolant capacity
- 1080 ml
- Tire sizes
- 80/100-21 51M (front)120/80-19 63M (rear)
- Stock fork spring
- 5.0
- Stock shock spring
- 56.0
- Fuel capacity
- 6.3 L
- Spark plug
- NGK SILMAR9A-9S
Starting points, not exact settings. Sag targets and spring-rate estimates are reference values that vary by rider weight, model, and conditions. Verify against your owner's manual, dial them in to your own feel, and re-check after any change. Suspension affects handling and safety; consult a qualified suspension technician if unsure.
Calculate your exact sag
Measure your bike, enter the numbers, and the free calculator checks your sag against this model's target band.
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