Yamaha YZ 2019 Series, Owner'S Service Manual

Page: 47 / 398

CHASSIS SPECIFICATIONS
2-6
EAM20129
CHASSIS SPECIFICATIONS
Chassis
Frame type Semi double cradle
Caster angle 26.3

Trail 114 mm (4.5 in)
Front wheel
Wheel type Spoke wheel
Rim size 21 x 1.60
Radial wheel runout limit 2.0 mm (0.08 in)
Lateral wheel runout limit 2.0 mm (0.08 in)
Wheel axle bending limit 0.50 mm (0.02 in)
Rear wheel
Wheel type Spoke wheel
Rim size 18 x 2.15
Radial wheel runout limit 2.0 mm (0.08 in)
Lateral wheel runout limit 2.0 mm (0.08 in)
Wheel axle bending limit 0.50 mm (0.02 in)
Front tire
Type With tube
Size 80/100-21 51M
Manufacturer/model DUNLOP/MX3SF
Rear tire
Type With tube
Size 110/100-18 64M
Manufacturer/model DUNLOP/MX3S
Tire air pressure (measured on cold tires)
Front 100 kPa (1.00 kgf/cm², 15 psi)
Rear 100 kPa (1.00 kgf/cm², 15 psi)
Front brake
Type Hydraulic single disc brake
Disc outside diameter

thickness 270.0

3.0 mm (10.63

0.12 in)
Brake disc thickness limit 2.5 mm (0.10 in)
Brake disc runout limit (as measured on
wheel)
0.15 mm (0.0059 in)
Brake pad lining thickness limit 1.0 mm (0.04 in)
Master cylinder inside diameter 9.52 mm (0.37 in)
Caliper cylinder inside diameter (Left) 22.65 mm, 22.65 mm (0.89 in, 0.89 in)
Specified brake fluid DOT 4
Rear brake
Type Hydraulic single 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 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