Cylinder 478cc for Yamaha YZ 450 F 03-05, WR 450 F 03-06 Big Bore
Tecnical Data:
CYLINDER BORE: 98 mm
STROKE: 63,4 mm
DISPLACEMENT: 478,2 cc
COMPRESSION RATIO: 12,4:1
REAR WHEEL HORSE POWER: 56 HP / 8.500 RPM
- Aluminium cylinder with nickel-carbide coating designed with wider water jackets.
- Forged piston with moly coating.
- Special gasket kit.
Athena [56 HP] Tests made with:
- Athena cylinder kit Ø98 mm
- Athena air filter
- Athena electronic unit
- Complete Akrapovic exhaust pipe
Original [54 HP] Tests made with stock engine and with complete Akrapovic exhaust pipe.
Original [52,4 HP] Tests made with stock engine.
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