Yamaha 2009 YZF-R1 (Y) Service Manual page 48

Rear suspension
Type
Spring/shock absorber type
Rear shock absorber assembly travel
Spring free length
Installed length
Spring rate K1
Spring stroke K1
Optional spring available
Enclosed gas/air pressure (STD)
Spring preload adjusting positions
Minimum
Standard
Maximum
Rebound damping adjusting positions
Minimum
Standard
Maximum
Compression damping setting
(for fast compression damping)
Minimum
Standard
Maximum
Compression damping setting
(for slow compression damping)
Minimum
Standard
Maximum
Swingarm
Swingarm end free play limit (radial)
Swingarm end free play limit (axial)
Drive chain
Type/manufacturer
Number of links
Drive chain slack (when adjusting the drive
chain)
Drive chain slack (when replacing the drive
chain and sprocket)
15-link length limit
Shift pedal
Installed shift rod length
CHASSIS SPECIFICATIONS
Swingarm (link suspension)
Coil spring/gas-oil damper
60.0 mm (2.36 in)
159.5 mm (6.28 in)
147.5 mm (5.81 in)
98.10 N/mm (10.00 kgf/mm, 560.15 lb/in)
0.0–60.0 mm (0.00–2.36 in)
No
1200 kPa (12.0 kgf/cm², 174.0 psi)
16
8
0
20
15
3
4
3
0
20
9
1
1.0 mm (0.04 in)
1.0 mm (0.04 in)
50VAZ/DAIDO
120
25.0–35.0 mm (0.98–1.38 in)
20.0–30.0 mm (0.79–1.18 in)
239.3 mm (9.42 in)
262.5–264.5 mm (10.33–10.41 in)
2-11