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BMW 3-Series (E90 E92) Forum > E90/E92/E93 Marketplace (For Sale / Trade / Wanted) > SPONSORS Classifieds/Groupbuys/Specials Area > Suspension & Brakes & Handling Upgrades > HP Autowerks | Racing Brake BBK E9x 335i



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      06-27-2012, 11:23 AM   #1
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HP Autowerks | Racing Brake BBK E9x 335i

This kit includes:
•2 Two-piece center-mount rotors
•2 4-Piston calipers (RB460)
•2 Aluminum adapters made of 7075-T6 Alloy (stronger and stiffer than 6061-T6)
•1 Set of RB ET300 brake pads (PD1149-33)

--------------------------------------------------------------------------------
Two-piece rotor: •True floating two-piece rotors with patent pending center-mount design.
•Direct bolt on, easy to install.
•Alloyed iron formula adds strength and heat resistance. Heat treated for a more uniform microstructure and ultimate performance.
•EDP Coating w/cross cut grinding on friction surface.

Benefits of using RB calipers versus stock calipers:
For street driving, here are the benefits: 1.More responsive braking, as pistons are coming from both sides of the rotor, versus just one side on the OE calipers.
2.Lighter weight calipers, which means that you are removing unpsrung weight from your vehicle, which results in better cornering and handling.
3.Better cosmetic looks - our caliper looks much more impressive in your wheel versus the OE caliper. The calipers are powder coated in California with glossy powder coat.
4.Brake pads are readily available (FMSI pad shape D1149) and easy to replace.
5.Quality Assurance - each caliper is assembled and hydro tested in our California facility.

For drivers who race, our calipers offer an even greater benefit versus OEM and other companies' Big Brake Kits:
1.The pistons are made out of stainless steel versus the usual aluminum material, resulting in less heat being transferred back to the brake fluid. This means that there is less of a chance of air being introduced into your brake line.
2.Pistons are dust sealed and pressure sealed to maintain longevity and reduce maintenance

Rotor Design:

Our unique and patented rotor designs make our discs cooler and last longer.
1.Convergent vane design

The cooling vanes are of a convergent nozzle design, which increases airflow and turbulence and makes discs cooler. (Illustration #1)

2. Center-mount design

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.True floating design

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

***Ships in 6-8 weeks***


$2247.46
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      08-14-2012, 09:00 PM   #2
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      11-17-2012, 10:39 AM   #3
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Anything for xi?
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      01-24-2013, 12:43 PM   #4
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Anything for xi?
Yes, xi kits are available!
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      03-19-2013, 11:30 PM   #5
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