Yamaha WR450F 2-TRAC User Manual

SPEC
MAINTENANCE SPECIFICATIONS
7
MAINTENANCE SPECIFICATIONS
CHASSIS
Item Standard Limit
Front suspension:
Shock absorber travel 300 mm •••
Fork spring free length 467 mm 460 mm
Installed length 463 mm (4 mm preload) •••
Collar length – •••
Spring rate (K1) 4.5 N/mm (Left leg), 4.1 N/mm (Right leg) •••
Spring rate (K2) 10 N/mm (Top out spring) •••
Spring stroke (K1) 300 mm •••
Spring stroke (K2) 25 mm (approximately) •••
Optional spring available Yes •••
Quantity 625 cm
2
(approximately) •••
Level 105 mm •••
Recommended oil Öhlins part no: 1305-01 (SAE 5W) •••
Inner tube outer diameter 46 mm •••
Rear suspension:
Rear shock absorber assembly travel 132 mm •••
Rear wheel travel 315 mm •••
Spring free length 270 mm •••
Installed length 251.5 mm (18.5 mm preload) ± 5 mm
Spring rate (K1) 52 N/mm •••
Spring stroke (K1) 0~132 mm •••
Optional spring available Yes •••
Enclosed gas/air pressure (STD) 10 bar •••
Recommended oil Öhlins part no: 1306-01 •••

Yamaha WR450F 2-TRAC Specifications

General

Displacement	449cc
Compression Ratio	12.5:1
Transmission	5-speed
Final Drive	Chain
Front Tire	80/100-21
Engine Type	Liquid-cooled, 4-stroke, DOHC, 5-valve
Bore x Stroke	95.0mm x 63.4mm
Front Brake	Single disc
Rear Brake	Single disc