Racingbrake Two-piece rotor (Slot) (STi REAR 04-08)

This is for the Set! (Left & Rear Side)

Rotor will fit on 5 each of lug holes both on 100.00 and 114.3 bolt hole circles. Please read the installation note prior to your purchase.

Rotor Material: Racing Formula Alloyed Gray Iron & Heat treated
Machining: Straight Slot
Surface: EDP Coating w/cross cut grinding on friction surface

NOTE: Retaining and jack screw holes have been removed to prevent the screws from rusting and causing difficult removal of the rotors. Our two-piece rotor hats are made of aluminum which is easier for installation and removal. See detail view here.

Installation note:

Trim the back plate edge approximately 2-3mm (0.1") to avoid interference with the rotor.

For 2008 models, it is necessary.

Click images to enlarge

Material:

1. Alloyed iron formula adds strength and heat resistance. Heat treating further improves rotor performance for a more uniform and stabilized microstructure.

Design:

1. The cooling vanes are of a convergent nozzle design, which increases airflow and turbulence and makes discs cooler. (Illustration #1)
   
   
   
   
   
   
   
   
   
   
   
   
   
   
    
2. The center-mount flanges for hat mounting to the rotor ring have several benefits. (Illustration #2)
• It allows the ring to be used on either side of the vehicle simply by mounting the hat on either side of the ring (unidirectional).
• The stress load transferred from the ring to the hat is balanced.
• Air inlets are widely open to both inboard and outboard sides of the rotor. More air suctions and even temperature on both sides of the disc surface.
• Heat transfer from the disc surfaces to the hat is even and minimized by increasing the flange length and the airflow around the flanges.
• Mounting flanges are on both friction surfaces ultimately provides excellent heat balance.
  
  
3. Exclusive full floating design with 10.9 grade alloyed hardware. Hardware is DACRO coated and crimp locking. DACRO is highly corrosion resistant and provides a film for easier movement between the hat and rotor ring as disc expands and contracts and the crimp design provides positive engagement without rattling or torque loss at temperature.