- Rear BBK (Big Brake Kit), JHM 325mm (12.8") for B5 A4-S4
Rear BBK (Big Brake Kit), JHM 325mm (12.8") for B5 A4-S4
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PROUDLY DESIGNED AND BUILT IN THE USA
**NOTE: As of 8/1/2012, all JHM Lightweight Rotors will now look like the picture below!!!***
Click to enlarge picture
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 325mm rear BBK (Big Brake Kit) for your B5 A4/S4. This is the BEST BBK we make to compliment our massive 350mm 6-piston Cayenne Caliper BBK for the front. Also this kit cannot be bought anywhere else since it is a custom rotor ring and hat that is not available from any other source. NOTE: A4 requires S4 rear calipers and caliper hangers to do this conversion. Use the drop down box on the ordering page to add these.
Stock vs. JHM
-Rotor OD: Stock B5 S4 = 256mm(10.07"), Stock B5 A4 = 245mm(9.64"), JHM = 325mm(12.8") - Almost 3 full inches LARGER for B5 S4 and over 3 inches for B5 A4 for better braking performance.
-Rotor Weight: Stock = 12lbs(each), JHM = 11.5lbs(each) - 5% LIGHTER, .5lbs less each - BIG BRAKES WITH NO WEIGHT GAIN!
-Rotor Cooling Air-gap: Stock = 8.5mm(.334"), JHM = 13mm(.511") - LARGER for better cooling
-Rotor Cooling Center Fin Design: Stock = Straight Fin, JHM = Airfoil - MORE EFFICIENT for better cooling
-Rotor Thickness: Stock = 22mm(.866"), JHM = 22mm(.866") - SAME
-Bolt pattern: - SAME (fits like an OEM rotor would)
INSTALL NOTES: Due to the relocation of the rear caliper making it more outboard you are required to unsnap and release the plastic sleeve for the parking brake cable in the lower rear control arm. This is necessary to allow the cable to be pulled rearward some so it can reach the caliper without kinking or excessive stretching. (NOTE: This sleeve is usually brittle and prone to breaking and sometimes hard to release, so do not be worried if it breaks when performing this mod. As long as you can get it so the cable can be pulled rearward some you did the job correctly)
2 - JHM 2-piece Lightweight 325mm (12.8") Rear Rotors.
2 - Caliper adapter brackets made from 1/2" stainless steel.
4 - Caliper adapter bracket mount bolts
2 - DOT Stainless Brake Lines for B5 S4 calipers
-Works with stock replacement B5 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 FOR B5 A4 OWNERS: You need these parts to complete the kit (new or used)
1 x 8D0615423C - LR Caliper
1 x 8D0615424C - RR Caliper
2 x 8D0615425 - Caliper Hanger (each)
4 x N10240901 - Caliper to Caliper Hanger bolts
4 x N10181502 - Caliper Hanger to Spindle bolts
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 A4-S4. 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.
NOTE: With the installs we have done we have found that our slot design is whisper quiet.
Click to enlarge picture
Note - This brake upgrade will fit under most 18" inch or larger wheels. However, we have had customers inform us that this Rear BBK does not fit under VMR V710 Wheels in the 18 x 8.5, ET 35 configuration.
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|Audi||S4||B5 (1997-2002)||2.7t V6 30v|
By Purchasing any Off-Road use ONLY products from JH Motorsports, Inc. I acknowledge and understand the following disclosure. (This notice is located at the bottom of the page description of affected products on our website.)Vehicle Code § 27156:
(b) No person shall operate or leave standing upon a highway a motor vehicle that is required to be equipped with a motor vehicle pollution control device under Part 5 (commencing with Section 43000) of Division 26 of the Health and Safety Code or any other certified motor vehicle pollution control device required by any other state law or any rule or regulation adopted pursuant to that law, or required to be equipped with a motor vehicle pollution control device pursuant to the National Emission Standards Act (42 U.S.C. Secs. 7521 to 7550, inclusive) and the standards and regulations adopted pursuant to that federal act, unless the motor vehicle is equipped with the required motor vehicle pollution control device that is correctly installed and in operating condition. No person shall disconnect, modify, or alter any such required device.
(c) No person shall install, sell, offer for sale, or advertise any device, apparatus, or mechanism intended for use with, or as a part of, a required motor vehicle pollution control device or system that alters or modifies the original design or performance of the motor vehicle pollution control device or system. Health and Safety Code § 43000:
43001. The provisions of this part shall not apply to:
(a) Racing vehicles.
As the aforementioned code sections outline, it is against the law to operate or use a vehicle on public streets or highways with modified, altered, or disconnected motor vehicle pollution control devices. This may include but is not limited to, Evaporative Fuel Controls, Catalysts, DPF, PTOX, PCV Systems, Exhaust Gas Recirculation Systems, Oxygen Sensors, Thermostatic Air Cleaners, Air Intake Systems, Fuel Injectors, Regulators, Adjustable Cam Gears, ECU Programming, Mapping, or other Computer Modifications. Air Pumps, Air Injection, Timing, and any other Emission System Modification(s).
Purchaser acknowledges and certifies to JH Motorsports Inc., that Purchasers vehicle will only be used for racing applications or off road vehicle use only. Purchaser requests these modifications for the purpose of enhancing the vehicle for competitive Racing Applications and will not use this vehicle on public streets or highways. Purchaser agrees to indemnify JH Motorsports Inc., all employees, officers, owners, and subsidiaries for any civil or criminal liability arising out of use of Purchasers vehicle on public streets or highways as Purchaser has been duly notified of the laws and regulations regarding disconnecting, alteration, or modification of a vehicle’s pollution control devices. Purchaser understands and has been advised the driving of a vehicle on public streets or highways could result in criminal or civil penalties.
Warning: This product may contain a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.
Learn More: www.p65warnings.ca.gov
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