WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.PROUDLY DESIGNED AND BUILT IN THE USA
**NOTE: As of 8/1/2012, all JHM Lightweight Rotors will now look like the picture below!!!***
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Due to popular demand, all of our 2-piece, lightweight rotors will now come with black anodized rotor hats featuring Type 3, hard anodizing, the highest quality and hardest anodizing available for aluminum. This will make the rotor hats more resistant to fade and wear and will hide brake dust better. Due to popular, demand all lightweight rotor rings will also feature zinc plating. This high quality coating will slow the effects of corrosion and keep your rotor rings looking good through the winters.
IN STOCK AND READY TO SHIP!
FINALLY a low cost front BB (Big Brake) solution for your B5 S4 that uses the popular Porsche Cayenne caliper that bolts right to your stock spindle with NO MODIFICATIONS! Only minor clearancing of the spindle for the rotor. NOTE: These rotors require the use of Cayenne 6-piston 330mm brembo calipers to do this conversion. The price on this page is only for the rotors. We sell optional hardware and brake lines to make the swap easier as well.
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Stock 321mm vs. JHM 350mm 2-piece for the Porsche Cayenne Caliper
-Rotor OD: Stock = 321mm(12.6"), JHM = 330mm(13") - .4" larger
-Rotor Thickness: Stock = 30mm(1.18"), JHM = 32mm(1.26") - thicker
-Rotor Weight: Stock = 21lbs(each), JHM = 19.5lbs(each) - 7% LIGHTER, 1.5lbs less each
-Rotor Cooling Air-gap: Stock = 11mm(.433"), JHM = 15.5mm(.610") - LARGER for better cooling
-Rotor Cooling Center Fin Design: Stock = Straight Fin, JHM = Airfoil - MORE EFFICIENT for better cooling
-Bolt pattern: - SAME (fits like an OEM rotor would)
Why the Porsche Cayenne caliper? With its 6-piston design and MASSIVE brake pads it is a strong performer. Also it bolts right up to your spindles with NO brackets. All you need is some bolts, nuts, brake lines and JHM rotors and you have a 350mm BBK. Being that it is an OEM part they are readily available and can be found used for great prices.
INCLUDES: 2 - JHM 2-piece Lightweight Slotted Front Rotors. (Each rotor weighs 1.5lbs less than stock for a total of 3lbs weight savings.) 7% lighter!
OPTIONS:
- Go back one section if you need a hardware kit for adapting the calipers to your car (bolts, washers and nuts).
- Go back one section if you need need stainless brake lines that adapt these calipers to the B5 S4.
Outer ring specs:
We worked closely with a race brake manufacturer that supplies many NASCAR racers and a couple major brake kit companies. Due to their expertise we chose to have them build us the outer rings to our specs to fit the B5 S4 with a Cayenne caliper bolted on. 12 attachment points for durability and strength.
Center hat specs:
We CNC machine the Aluminum center hats in house based on their recommended materials and thicknesses for durability. 12 attachment points for durability and strength. We also engrave JHM in them in 3 locations equal from each other, it looks clean and doesn't jump out or look tacky.
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Note - This brake upgrade only fits under 17" wheels or larger. It fits stock 17" B5 S4 wheels with NO wheel spacer and most other OEM and aftermarket wheels as well.
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