Yamaha YZ 2017 Series, Owner'S Service Manual, Page: 49 / 410

CHASSIS SPECIFICATIONS
2-8
Rear brake
Type Hydraulic single disc brake
Operation Right foot operation
Brake pedal position 5 mm (0.20 in)
Rear disc brake
Disc outside diameter

thickness 245.0

4.0 mm (9.65

0.16 in)
Brake disc thickness limit 3.5 mm (0.14 in)
Brake disc runout limit (as measured on wheel) 0.15 mm (0.0059 in)
Brake pad lining thickness
6.4 mm (0.25 in)
Limit 1.0 mm (0.04 in)
Master cylinder inside diameter 11.0 mm (0.43 in)
Caliper cylinder inside diameter 25.40 mm (1.00 in)
Specified brake fluid DOT 4
Steering
Steering bearing type Taper roller bearing
Center to lock angle (left) 43.0 °
Center to lock angle (right) 43.0 °
Front suspension
Type Telescopic fork
Spring/shock absorber type Coil spring/Hydraulic damper
Front fork travel 310.0 mm (12.2 in)
Fork spring free length 470.0 mm (18.50 in)
Limit 465.0 mm (18.31 in)
Fork spring installed length 470.0 mm (18.50 in)
Spring rate K1 4.40 N/mm (0.45 kgf/mm, 25.12 lbf/in) (USA)
(CAN) (EUR) (AUS) (NZL) (ZAF)
4.10 N/mm (0.42 kgf/mm, 23.41 lbf/in) (JPN)
Spring stroke K1 0.0–310.0 mm (0.00–12.20 in)
Inner tube outer diameter 48 mm (1.9 in)
Inner tube bending limit 0.2 mm (0.01 in)
Optional spring available Yes
Recommended oil Yamaha Suspension Oil S1
Quantity 526.0 cm
3
(17.78 US oz, 18.55 Imp.oz) (USA)
(CAN) (EUR) (AUS) (NZL) (ZAF)
496.0 cm
3
(16.77 US oz, 17.49 Imp.oz) (JPN)
Rebound damping adjusting positions
Minimum 20 clicks out*
Standard 10 clicks out*
Maximum Fully turned in
* With the adjuster fully turned in
Compression damping adjusting positions
Minimum 20 clicks out*
Standard 14 clicks out*
Maximum Fully turned in
* With the adjuster fully turned in