The 2007 YZ450FM is a further development of the machine that propelled legendary Stefan Everts to his ‘06 world title, winning all but one of the GP’s. With Joshu Coppins and Marc De Reuver as new riders, the Rinaldi team technicians have tuned the machine anew to accommodate the specific riding styles of the challengers. It is what the team does best and the riders have felt ‘at home' on the YZ from the outset.
Main innovations of the production YZ450F are a new five speed gearbox and a new engine. This power house is mated with a new aluminum frame with changed geometry, making the base for Coppins’ factory bike extremely competitive straight from the crate. In essence the team only needs to tailor the production bike to suit the riders' specific riding styles.
| Engine |
| Engine type |
Single cylinder liquid-cooled 4-stroke, DOHC 5-valve |
| Displacement |
449cc |
| Carburation |
FCR39×1 |
| Ignition |
YRRD Computer adjustable CDI |
| Lubrication system |
Semi-pressurized wet sump |
| Maximum power |
60ps |
| Exhaust |
Arrow |
| Transmission |
| Type |
5-speed |
| Primary drive |
Gear |
Clutch
|
Wet with 9 plates with two options: hydraulic or cable operation |
| Final drive |
Chain |
| Chassis and running gear |
| Frame type |
Aluminium semi-double cradle |
| Rear frame |
Carbon fibre |
| Triple clamps |
CNC machined from billet, made by Ergal |
| Front suspension |
Factory fully adjustable 50mm upside down Kayaba forks |
Rear suspension
|
Monocross with factory Kayaba gas shock absorber with titanium spring |
Front/rear wheels |
20/21 inch front, 19 inch rear |
| Front brake |
φ270mm single disc,Brembo radial caliper |
| Rear brake |
φ245mm single disc |
| Fuel capacity |
Carbon fibre, 8 litres capacity |
