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Old 05-23-2014, 06:14 PM   #21
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We truly appreciate Shawn's efforts to pioneer RB caliper installation, and we apologize for the inconvenience caused to him by sending you the "correct OE replacement brake line" but is incorrect for our calipers.

Nevertheless his discovery also leads us to this development for a brake line kit that is simpler and easy to install and maintain.

To honor his involvement and contribution & assistance (to us as well as the GT-R community) we will assign this kit with a P/N "BL-SH01" SH=Shawn Hayes, so people install RB kits would know how this kit was made.

Thank you again Shawn and congratulations to your marriage, enjoy your honeymoon. BL-SH01 brake line kit is being sent to you today in time for your installation after your honeymoon.
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Old 05-25-2014, 09:04 AM   #22
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Brake pad pins, the set on left is Brembo, the set on right is RB:

Both would keep your pads in place but why RB design is better:

Brembo is a tap out (uninstall), and tap in (install) design, with a hammer, screw driver or something, work on the front to tap out and from the back to tap in:

RB's design using M6x1.0 cap bolt to screw in and out - Very easy to install and secured (w/locktite), no rattling, never come loose or fall off. You just need a 6mm Allen wrench and work on the front to replace your pads with easiness and confidence.

Brembo caliper situation:

No. 1 - The pin can get stuck.

Front top caliper pin is stuck

R35 Brembo - Lower Pin Stuck!

No. 2 - The pin can get lost.

So I noticed this today

Be careful enough not to tap the hammer into the caliper body, or you will need some touch up work like other member suggested.

RB solution:

Brembo Caliper Pad Pin Punch
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Old 05-28-2014, 02:08 PM   #23
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Default Caliper Corner Pad Springs

Why pad spring is so important for an efficient braking system:

The above picture showing GTR front brake pad coming out of OE Brembo caliper.

As you can see the contact marking on the side of backing plate, some are at bottom, and some are on the top. These marks symbolize a "rocking" movement during the engagement and release of braking action. This movement will result to loss of braking efficiency due to the slippage, and a smooth & stable movement against the caliper as the pad wears out is lacking.

Below is a GTR OE Brembo Caliper - Corner is only machined. No spring and it leaves good room to play with the brake pad. You should notice it, as you replace the pad - just drop it down. (Caliper pad spacing when new is 190.1mm vs. pad 189.6mm). The pad spacing will increase over the usage due to the wear.

RB Calipers:

Notice RB Calipers equipped with 4-corner Stainless Spring Steel (replaceable but you never need) which I believe is a must for a true high performance caliper to keep the pad snug fit inside the caliper w/o rocking movement, and also provide a smooth and stable pad movement as it wears out.

Another real life example on why a better designed caliper can make the difference in the performance and durability, from the caliper down to pad and rotor.
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Old 07-22-2014, 09:39 PM   #24
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Default Pad taper wear

Hammad brought his 2012 GTR back to our shop two weeks ago to check how RB replacement rotors performed after all these heavy track days:

Rotor Surface: Looks very healthy, smooth and shining, shows no sign of any crack.

Rotor Wear: Literally no wear, measured as 33.92mm (34.0mm when new)

pad Wear: Uneven pad wear was noticed:

Driver Side:


Top/Bottom: 16.05mm/16.07

Leading/Trailing: 15.98/16.22

Top/Bottom: 16.00mm/16.60

Leading/Trailing: 16.32/15.88
Passenger Side:


Top/Bottom: 16.27mm/16.13

Leading/Trailing: 15.62/16.52

Top/Bottom: 16.20mm/16.70

Leading/Trailing: 16.45/16.28
New pad=18.5mm, so the pad had worn ~2.0 mm which shows good pad/rotor compatibility and durability, however the uneven wear resulting from the uneven hydraulic pressure can affect the overall performance and other ill effect including vibration under higher speed braking, overheating, accelerating pad wear, shorten rotor life etc.

In general any pad thickness variation over 1.0mm (between leading and trailing-In red) should be rectified by rebuilding the caliper with new seals or new pads, especially for a long (186mm) and wide (65mm) pads like GTR, I would recommend to keep it under 0.6mm for peak track performance.

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Old 08-04-2014, 10:50 AM   #25
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Default Some reference kits for GT-R

Tommy Kaira Rowen kit ($17,000)

CCM rotor kit by Overtake Carbon ($14,600)

CCM Rotor kit by AMS Alpha R35 GT-R ($12,500)

Alcon CCX Carbon Ceramic Brake Kit ($35,000) - Was it $25,000?

Alcon Iron Rotor Kit ($15,000)

Alcon Iron Rotor Kit-Race version ($16,600)

RB complete iron kit retail under $10,000 vs. their $17,000
RB complete ZR1 CCM rotor ki $15,000 vs. their rotors only
Complete S-T CCM rotor kit $18,000 vs. Alcon's $35,000

Latest review on RB calipers in GT-R Forum
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Old 11-28-2014, 05:51 PM   #26
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Good comment Shawn,

All OE CCM brake set up have the pads overhang as you pointed out, let alone the aftermarket retrofit kit like ZR1 or AP/Stillen CCM rotors fitted with ZR1 pads.

In my observation there are two typical "brake pad" set up for modem muscle cars:

1. Iron rotor like for GTR
2. CCM rotors like for ZR1

They use different brake pad size per below illustration, assume GTR pad is adequate (assume the system design is proper) for it's better thermal conductivity then CCM, however as you change the rotors to CCM, due to it's poorer thermal conductivity (or can't drain the heat as faster as iron), it would require larger pads (and lager rotors) to deal with the same amount of heat yet still keep the braking temperature under threshold w/o overheating.

Adopting a larger pad (like ZR1) with the same caliper body (like GTR or ZR1) is a retrofit, it may help some but not a fundamental solution. Why don't Brembo offer a more proper caliper design for ZR1 pad? that's a questionable conspiracy or a cost factor between them and can manufacturers.
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Old 11-10-2017, 04:09 PM   #27
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GTR front and rear calipers: 15.1 lbs

RB front and rear calipers: 17.8 lbs

ZR1/Z28 front and rear calipers: 19 lbs
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