Yamaha 250 YZF 2005
Standard: Fourche: 43.5-470-43 / Amortisseur: 59/62-270-50
| Poids du pilote | Ressorts de fourche | Ressort d'amortisseur |
| 45-55kg | 0.36 | 4.4 |
| 55-65kg | 0.38 | 4.6 |
| 65-75kg | 0.40 | 4.8 |
| 75-85kg | Standard | Standard |
| 85-95kg | 0.44 | 5.2 |
| 95-105kg | 0.46 | 5.4 |
| 105-115kg | 0.48 | 5.6 |
| 115-125kg | 0.50 | 5.8 |
Yamaha 250 YZF 2009-2013
Standard: Fourche: 43.5-455-45 / Amortisseur: 59/62-270-52
| Poids du pilote | Ressorts de fourche | Ressort d'amortisseur |
| 45-55kg | 0.38 | 4.6 |
| 55-65kg | 0.40 | 4.8 |
| 65-75kg | 0.42 | 5.0 |
| 75-85kg | Standard | Standard |
| 85-95kg | 0.46 | 5.4 |
| 95-105kg | 0.48 | 5.6 |
| 105-115kg | 0.50 | 5.8 |
| 115-125kg | 6.0 |
Yamaha 250 YZF 2006-2007
Standard: Fourche: 43.5-455-42 / Amortisseur: 59/62-270-48
| Poids du pilote | Ressorts de fourche | Ressort d'amortisseur |
| 45-55kg | 0.36 | 4.2 |
| 55-65kg | 0.38 | 4.4 |
| 65-75kg | 0.40 | 4.6 |
| 75-85kg | Standard | Standard |
| 85-95kg | 0.44 | 5.0 |
| 95-105kg | 0.46 | 5.2 |
| 105-115kg | 0.48 | 5.4 |
| 115-125kg | 0.50 | 5.6 |
Yamaha 250 YZF 2014-2018
Standard: Fourche: 43.5-498-46 / Amortisseur: 64/66-260-54
| Poids du pilote | Ressorts de fourche | Ressort d'amortisseur |
| 45-55kg | 0.40 | 4.8 |
| 55-65kg | 0.42 | 5.0 |
| 65-75kg | 0.44 | 5.2 |
| 75-85kg | Standard | Standard |
| 85-95kg | 0.48 | 5.6 |
| 95-105kg | 0.50 | 5.8 |
| 105-115kg | 0.52 | 6.0 |
| 115-125kg | 6.2 |
Yamaha 250 YZF 2008
Standard: Fourche: 43.5-455-44 / Amortisseur: 59/62-270-52
| Poids du pilote | Ressorts de fourche | Ressort d'amortisseur |
| 45-55kg | 0.38 | 4.6 |
| 55-65kg | 0.40 | 4.8 |
| 65-75kg | 0.42 | 5.0 |
| 75-85kg | Standard | Standard |
| 85-95kg | 0.46 | 5.4 |
| 95-105kg | 0.48 | 5.6 |
| 105-115kg | 0.50 | 5.8 |
| 115-125kg | 6.0 |
Yamaha 250 YZF 2019-2022
Standard: Fourche: 43.5-498-47 / Amortisseur: 64/66-25-56
| Poids du pilote | Ressorts de fourche | Ressort d'amortisseur |
| 45-55kg | 5.0 | |
| 55-65kg | 0.42 | 5.2 |
| 65-75kg | 0.44 | 5.4 |
| 75-85kg | Standard | Standard |
| 85-95kg | 0.48 | 5.8 |
| 95-105kg | 0.50 | 6.0 |
| 105-115kg | 0.52 | 6.2 |
| 115-125kg | 6.4 |
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