SUSPENSIONS
Yamaha 450 YZF 2004
Standard: Fourche: 43.2-485-4.4 / 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 | 0.52 | 6.0 |
Yamaha 450 YZF 2010-2011
Standard: Fourche: 43.5-470-4.6 / Amortisseur: 64/66-260-56
| Poids du pilote | Ressorts de fourche | Ressort d'amortisseur |
| 45-55kg | 0.40 | 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 |
Yamaha 450 YZF 2016-2017
Standard: Fourche: 43.5-498-4.9 / Amortisseur: 64/66-260-56
| Poids du pilote | Ressorts de fourche | Ressort d'amortisseur |
| 45-55kg | 0.44 | 5.0 |
| 55-65kg | 0.46 | 5.2 |
| 65-75kg | 0.48 | 5.4 |
| 75-85kg | Standard | Standard |
| 85-95kg | 0.50 | 5.8 |
| 95-105kg | 0.52 | 6.0 |
| 105-115kg | 0.52 | 6.2 |
| 115-125kg | 6.4 |
Yamaha 450 YZF 2005
Standard: Fourche: 43.5-470-4.4 / 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 | 0.52 | 6.0 |
Yamaha 450 YZF 2012-2013
Standard: Fourche: 43.5-470-4.6 / 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 450 YZF 2018-2019
Standard: Fourche: 43.5-498-5.0 / Amortisseur: 64/66-275-56
| Poids du pilote | Ressorts de fourche | Ressort d'amortisseur |
| 45-55kg | 0.44 | 5.0 |
| 55-65kg | 0.46 | 5.2 |
| 65-75kg | 0.48 | 5.4 |
| 75-85kg | Standard | Standard |
| 85-95kg | 0.52 | 5.8 |
| 95-105kg | 0.54 | 6.0 |
| 105-115kg | 0.54 | 6.2 |
| 115-125kg | 6.4 |
Yamaha 450 YZF 2006-2009
Standard: Fourche: 43.8-455-4.6 / Amortisseur: 59/62-270-54
| 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 450 YZF 2014
Standard: Fourche: 43.5-498-4.6 / Amortisseur: 64/66-260-56
| Poids du pilote | Ressorts de fourche | Ressort d'amortisseur |
| 45-55kg | 0.40 | 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 |
Yamaha 450 YZF 2020-2022
Standard: Fourche: 43.5-498-5.0 / Amortisseur: 64/66-275-56
| Poids du pilote | Ressorts de fourche | Ressort d'amortisseur |
| 45-55kg | 0.44 | 5.0 |
| 55-65kg | 0.46 | 5.2 |
| 65-75kg | 0.48 | 5.4 |
| 75-85kg | Standard | Standard |
| 85-95kg | 0.52 | 5.8 |
| 95-105kg | 0.54 | 6.0 |
| 105-115kg | 0.56 | 6.2 |
| 115-125kg | 6.4 |
