This is the BEST Rear BBK made to compliment the massive 350mm 6-piston Cayenne Caliper BBK offered for the front. This kit cannot be bought anywhere else since it is made custom by JHM, lightweight rotor ring and hat in house. These parts are not available from any other source. This kit includes a JHM exclusive park brake spring relocation kit to allow the largest rotor possible on a stock wheel. The factory park brake spring limits the rear rotor diameter (it protrudes outboard and would hit a stock wheel on a rotor of this size).

Stock vs. JHM
- Rotor OD: Stock B6-B7 S4 = 300mm (11.8 inches) JHM = 330mm (13.0 inches) - More than 1 inch LARGER than stock better braking performance.
- Rotor Weight: Stock = 13.0 lbs (each), JHM = 11.5 lbs (each) - A total of 3 lbs LIGHTER with IMPROVED braking performance.
- Rotor Cooling Air-gap: Stock = 8.5mm (.334 inches), JHM = 13mm (.511 inches) - LARGER for better cooling
- Rotor Cooling Center Fin Design: Stock = Straight Fin, JHM = Airfoil - MORE EFFICIENT for better cooling

- Rotor Thickness: Stock = 22mm (.866 inches), JHM = 22mm (.866 inches) - SAME
- Bolt pattern: - SAME (fits like an OEM rotor would)

NCLUDES:
2 - JHM 2-piece Lightweight 330mm Rear Rotors.
2 - Caliper adapter brackets made from Stainless Steel
4 - Caliper adapter bracket mount bolts
2 - Park brake springs
2 - Park brake spring brackets
2 - Longer caliper to caliper hanger bolts for Park brake spring brackets
-Works with stock sized, replacement B6-B7 S4 rear brake pads. Such as OEM, Hawk, PBR, Mintex, Etc. We sell pads as well, if you do not see the ones you want contact us for details.

Note - This brake upgrade fits under the Stock B6-S4 "Avus" style, 18" inch wheels. It also fits under both stock B7 S4 18" wheel designs. Even more room under most aftermarket 18" wheels and larger.