Disc Brake Component Specifications

JM3 (Front)
Rotor Discard Thickness * 24.51 mm (0.965 in)
Rotor Minimum Allowable Thickness After Refinish 24.89 mm (0.980 in)
Rotor Thickness (new) 26.2 mm (1.03 in)
Rotor Maximum Allowable Lateral Runout 0.051 mm (0.002 in)
Rotor Maximum Allowable Scoring 1.5 mm (0.059 in)
Rotor Maximum Allowable Thickness Variation 0.025 mm (0.001 in)

JC1 (Front)
Rotor Discard Thickness * 27.5 mm (1.08 in)
Rotor Minimum Allowable Thickness After Refinish 28.0 mm (1.10 in)
Rotor Thickness (new) 29 mm (1.14 in)
Rotor Maximum Allowable Lateral Runout 0.051 mm (0.002 in)
Rotor Maximum Allowable Scoring 1.5 mm (0.059 in)
Rotor Maximum Allowable Thickness Variation 0.025 mm (0.001 in)

JC1 (Rear)
Rotor Discard Thickness * 18.50 mm (0.728 in)
Rotor Minimum Allowable Thickness After Refinish 19.64 mm (0.735 in)
Rotor Thickness (new) 20 mm (0.787 in)
Rotor Maximum Allowable Lateral Runout 0.051 mm (0.002 in)
Rotor Maximum Allowable Scoring 1.50 mm (0.059 in)
Rotor Maximum Allowable Thickness Variation 0.025 mm (0.001 in)

* All brake rotors have a discard dimension cast into them. Replace any rotor that does not meet this specification. After refinishing the rotor, replace any rotor that does not meet the minimum thickness specifications.