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HT-Spec Stage 4 & 5 brake kits are ALL NEW with RB Performance Brake Kits

  • Posted: 03-09-2012 12:39 PM
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RB Performance (used to be called Racingbrake for you old timers) has just given us all the specs on their new long-awaited brake kits! We are so amped about these brakes we are superseding our existing Stage 4 HT-Spec kit to these new RB packages. First some eye candy:

The top-of the line kit is the Stage 5 4-pot kit with 1- or 2-piece324mm (12.8") RB rotors. The calipers and rotor hats are forged aluminum with all stainless hardware. Rotor temperature control is beyond reproach, featuring convergent vane design, patented open-slots, and patented center-mount rotor location. 2-piece rotors offer a huge weight savings.

The basic kit the line kit is the Stage 4 4-pot kit with 1- or 2-piece RB rotors in standard 300mm (11.8") diameter. The calipers and rotor hats are forged aluminum with all stainless hardware. Rotor temperature control is achieved with convergent vane design and patented center-mount rotor location. The only thing you lose over the 2-piece kit is some weight savings.

Kit contents:

324mm BBK (1 pc) $1,470 (retail) (Sept 2011)
Disc: 90371A (Slot)
Caliper: RB4045-RD (Red or Black available)
Adapter: AD137
Pads: PD647-33 (ET 300), option up to ET500 or ET800
Brake Lines: BStainless Braided

324mm BBK (2pc) $1,850 (retail) (End July 2011)
Disc: D216-09-381 (Open Slot)
Hat: H704-18 (Forged aluminum)
Caliper: RB4045-RD (Red or Black available)
Adapter: AD137
Pads: PD647-33 (ET 300), option up to ET500 or ET800
Brake Lines: Stainless Braided

These kits are simply amazing value for technology offered. Where do I begin? How about the most obvious part; the calipers.

RB Performance calipers are designed from the ground-up to be the most cost-effective, high-performance caliper on the market.

 

    RB Performance calipers:
  • Caliper Body: Light weight at only 4.5lbs, these new RB4000 calipers are re-designed and built for the toughest brake jobs with extended service life before any rebuild is required.
  • Low Profile: Together with RB Center-Mount design two-piece rotors, you hardly even need to require a spacer to install the kit. It fits under 16’ wheel for 300mm rotors.
  • Piston Material: Made of stainless steel instead of aluminum commonly used by other caliper mfgrs which can substantially reduce the heat transfer (approx 1/10 of aluminum) from the pad to brake fluid. Pistons are vented to further reduce the heat contact area and improve air circulation thereby reducing more heat transfer. Being that stainless steel has a comparable melting point (2700°F) to brake pads’ steel backing plates, the pistons will never melt to the pad backing plates. Aluminum pistons (1220°F) can melt to brake pad backing plates under extreme high speed braking.
  • Dust Seal: Our dust seal is of built-in type (instead of external boot type) uniquely designed to shield the dust and foreign material from contamination and will not rip – as commonly seen on boot type dust seals.
  • Hardware: Brake pad pins and banjo connections were re-designed for easier brake line connection and brake pad replacement.
  • Surface Coating: Powder coating with most durable finish for lasting appeal.
  • Hardware: Most hardware is made of stainless steel for durable performance and appearance.
  • Never Get Lost Bleeder Cap: Newly designed with a retaining loop so you will never have to find it again and/replace the lost ones. (made of durable EPDM)
  • Use standard FMSI brake pads (D647): A very common P/N (same as WRX 4-pot fix pistons calipers, plenty of choice for suppliers and compounds.
  • Made in USA: Calipers are designed, fully assembled and hydro-tested in our Fullerton, CA facility, with full after sales support/service.

Stainless steel pistons are a major feature, as they significantly reduce heat transfer from pads to brake fluid as opposed to aluminum used by other companies.

The brake pads included in the kit are ET300, but a number of upgraded compounds are available in upgrade. We ET500 will offer the same low/no noise and dust of the ET300 but will work better with more aggressive driving. For the maximum in street performance we suggest the ET800 pads, which again are quiet, clean and livable but withstand higher temperatures.

Lastly, brake lines are included to provide the best possible pedal pressure and modulation ability.



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