Sakebomb Garage Competition Rear Big Brake Kit - RX-8 Caliper Conversion
 

Sakebomb Garage is proud to introduce the ultimate rear brake solution for the S2000!

The Problem:
The S2000 is a brilliant performance platform, but I think we can all agree…the rear brakes are unacceptable for performance applications. Specifically, the solid 282x12mm rear rotors are woefully inadequate for a car of this level of horsepower and handling capabilities. For some perspective, the stock rear rotor is essentially the same size as the rear rotor from the Mazda Miata, which makes 128hp and weighs over 400lbs less! We saw a problem with this ;) . The solid rear rotor cannot cool effectively at all because of lack of venting. In simple terms, the small, solid rotors have no ability to cool themselves. These factors cause extreme rotor temperatures, which lead to: destroyed wheel bearings, melted pads, necessity for extreme race compounds, brake fade, and eventually loss of braking. All of this you know.

After searching high and low, we were shocked to find there were no suitable solutions. We knew we had to do something…and we did!


Solution:
Introducing the Sakebomb Garage Vented, Directional Curved Competition Rear Brake Kit! We looked at doing a kit using the OEM S2000 caliper but found that we were greatly handicapped by its narrow width. The stock caliper proved to be a poor candidate for our goals. We felt that retaining the e-brake was a requirement, as well as cost of replacement parts. Piston bore size, increased caliper width, and parts availability were also important factors. We finally settled on the RX-8 caliper based on these criteria.

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Rotor design: Weight and fitment also played into our design goals. We designed a lightweight custom two piece rotor employing directional curved vanes, to further maximize cooling efficiency. The hats were designed for extreme temperatures, using a competition racing standard 2024-t351 aluminum, instead of basic 6061, which is more stable at high temperatures. As with all of our brake kits, hard-anodizing, mil-spec hardware, and silver plated locking jet-nuts are standard.

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Benefits:

• Increased rotor diameter 282mm to 314mm - for increased braking torque
• Increased rotor width - 12mm SOLID to 20mm directional curved vane VENTED
• Lightweight two-piece rotors
• Retains e-brake functionality
• Reliable and affordable OEM RX-8 Caliper - easily sourced from Ebay used, rebuilt online, or new from Mazda.
• Wide variety of pads to choose from

What’s in the box:

• SBG Designed 314x20mm 2-piece Vented Directional Curved Vane rotors - 2024-t356 Hard Anodized hats with mil-spec locking hardware
• SBG Designed 6061-t6 Caliper Brackets
• SBG RX8->S2000 E-Brake Rotational Mechanism and Hard Mount Brackets
• SBG Chassis E-Brake Cable Mounting Extension Brackets
• SBG DOT Approved Stainless Brake Lines
• Installation Instructions

*Brake pads are NOT included, but are widely available in all compounds for RX8 Rear Caliper. We offer Endless and Hawk through our website.


Additional notes:
We designed this rear brake kit to be used with our 325 x 32mm Front AP Competition Brake kit, or Track-Day Brake Kit. This rear brake kit provides about 20% increase in effective torque so you may need to select a rear pad with lower coefficient of friction if you are using an existing front BBK with undersized pistons, or stock front calipers. Proper brake bias will depend on a variety of factors including suspension setup and tire compound. Let us know if you need pointers with pad compound selection.


More Pictures:
http://s20.postimg.org/dbakz1tf1/bra...comparison.jpg
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I don't see any PFC options for the RX-8 calipers. All I want is a way to run PFC08s in front and rear.

Looks like a great solution for better rear brakes.

So the kit (box) doesn't come with the RX8 caliper?

It doesn't look like it. At first I was thinking wtf? But honestly with as cheap as parts are online compared to having an account with the dealer it doesn't make much sense to include them. They would have to mark up their price on them to make it worth the hassle of stocking them and it's cheaper for the end user to just buy from an online website. Not terribly inconvenient and I'm sure if they offered them with the caliper it wouldn't take long for somebody to realize they can get them cheaper elsewhere.

Hey guys,
No it doesn't come with the RX-8 caliper. We thought exactly that. We figured everyone would prefer to source their own. They are pretty easy to find pretty much everywhere (junkyard, ebay, rockauto, craigslist). Rotaries are not particularly known for reliability, and they made a lot of them...so there's an unreasonable number of them in the junkyard :p. It's refreshing to be on s2ki because we can't exactly speak freely about 'rotary reliability' in the RX-8 forum...but the brakes are phenomenal...so... :).

But yes, the goal here was to make an affordable solution that would actually solve the problem while using readily available parts.

How readily available are replacement rings? Are they a Sakebomb exclusive thing?

No offence, but companies come and go all the time. It is important to know the future potential issues we may face when it comes time for new rings.

Do these retain use of the Emergency brake?

It is listed that it does.

Very neat!

Have you done any brake temp testing? Rear brake temps tend to kill wheel bearings... so if they reduce brake temps significantly, I'd imagine wheel bearings would last longer.