Brakes (all models)

Specifications
Disc brakes
Brake fluid type Dot 4
Brake pad minimum thickness 2 mm (0.08 inch)
Front disc thickness
XL600R, XR600R
1983 through 1987
Standard 3.5 mm (0.14 inch)
Limit 3.0 mm (0.12 inch)*
1988 and later models
Standard 3.0 mm (0.12 inch)
Limit 2.5 mm (0.10 inch)*
XR650L
Standard 4.0 mm (0.16 inch)
Limit 3.5 mm (0.14 inch)
XR650R
All except Australian models
Standard 2.8 to 3.2 mm (0.11 to 0.13 inch)
Limit 2.5 mm (0.10 inch)
Australian models
Standard 3.3 to 3.7 mm (0.13 to 0.15 inch)
Limit 3.0 mm (0 .12 inch)
Rear disc thickness
XL600R, XR600R
Standard 4.5 mm (0.18 inch)
Limit : 4.0 mm (0.16 inch)*
XR650L
Standard 5.0 mm (0.20 inch)
Limit 4.0 mm (0.16 inch)
XR650R
All except Australian models
Standard 3.8 to 4.2 mm (0.15 to 0.17 inch)
Limit 3.5 mm (0.14 inch)
Australian models
Standard 4.3 to 4.7 mm (0.17 to 0.19 inch)
Limit 4.0 mm (0.16 inch)
Disc runout limit
XL600R, XR600R
Front 0.30 mm (0.012 inch)
Rear 0.15 mm (0 .006 inch)
XR650L
Front 0.30 mm (0 .012 inch)
Rear 0.40 mm (0.020 inch)
XR650R
Front 0.20 mm (0.008 inch)
Rear 0.30 mm (0.012 inch)
Drum brakes
Brake lining minimum thickness
Brake pedal height
Drum diameter
XL600R
Standard 130 mm (5.12 inches)
Wear limit 131 mm (5.16 inches)*
XR600R
Standard 110 mm (4.33 inches)
Limit 111 mm (4.37 inches)*
*Refer to marks cast into the drum (they supersede information printed here)