#27417 Alternate Brakes for Production

1. Non-stock brake calipers must have a max of 4-pistons and the caliper body must be made of ferrous or aluminum material.
Calipers must be mounted in the same location and orientation as the stock positioning. Mounting brackets are unrestricted, but
must be made of ferrous or aluminum material. Stock caliper mounting tabs may be modified or removed to facilitate caliper
installation. In all other regards, non-stock brake calipers are unrestricted.
2. Non-stock-size brake rotors are unrestricted, provided they fit inside the max wheel limitations on a vehicle’s spec line.
c. All brake rotors must be made of ferrous material, and can be cross-drilled and/or slotted. A two-piece hat and rotor design
may be utilized, but the hat must be made of ferrous or aluminum material.
d. Alternate drums can be used, but must be made of ferrous or aluminum material, and be the stock diameter, width, and
design.
b e. Cars fitted with rear drum brakes, can convert to rear disc brakes without penalty. Note that the “Brakes Std.” and “Brakes
Alt.” listings on a vehicle’s spec line do not prohibit a car that was fitted with rear drum brakes stock, from converting to rear disc
brakes under this rule. When converting from rear drum brakes to rear disc brakes:
1. Rear brake rotors must be solid and can be no larger in diameter than the largest permitted front brake rotor, as defined on
the vehicle’s spec line. Rear brake rotors must be solid and made of a ferrous material. Rear brake rotors cannot be cross drilled
or slotted.
2. Rear brake rotor hats can be made of a ferrous or aluminum material.
3. 2. Rear calipers and mounting brackets are unrestricted but must be made of a ferrous or aluminum material.
The standard and alternate brake listings on a vehicle’s specification line, does not prohibit a car that was fitted with rear drum
brakes as stock from converting to rear disc brakes under this rule.
c f. Dual braking systems are required. Any dual brake master cylinder(s) and pedal assembly can be fitted. Pressure equalizing
and proportioning valve devices are unrestricted.
d g. Servo assists are unrestricted.
e h. Drum brake wheel cylinders are unrestricted.
f i. Brake pads and brake linings are unrestricted.
g j. Brake lines are unrestricted.
h k. The hand brake and its operating mechanism can be removed.
i l. Brake Ducting Brake air ducts can be fitted. Front duct inlet(s) cannot extend to the side beyond the center-lines of the front
wheels, or beyond the forward most part of the front bodywork/air-dam. Rear duct inlet(s) must face forward, cannot extend to
the side beyond the center-lines of the rear wheels, or be located more than 24” forward of the rear axle center-line.
1. Brake air ducts can be fitted.
2. The front brake duct inlet(s) must not extend to the side beyond the centerlines of the front wheels, or forward of the
forward most part of the front of the body or front air dam.
3. Rear brake duct inlet(s) must face forward, they must be located no more than 24” forward of the rear axle centerline and
must not extend to the side beyond the centerlines of the rear wheels.
m.4. Backing plates and dust shields are unrestricted."