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© 2005 Rennsport Systems

Updated 12/15/05

Carrera Front

Carrera Rear

930 Front

930 Rear

     Porsche High Performance Brake Systems 

                     Twin-Turbo Big Red caliper and drilled rotor

Porsche Brakes have set the standard by which all other manufacturers have been compared since 1964 when they started installing ATE disc brakes on the 356C.Today, the 993 TT & 996 GT-3 brakes are the benchmarks of brake performance for the rest of the world. To that end, we have several options for increasing the braking power of your 911/930, C2/C4, 993, 996, 997 and Boxster models.

Brake improvements consist of upgrading 5 major items: Calipers, Rotors, Pads, Fluid, and Cooling. Rennsport Systems offers several levels of brake upgrades from simple caliper replacements to full 4-wheel systems incorporating larger rotors and calipers. We also have high-performance brake pads from Pagid, Brembo, & Mintex. A major part of any brake upgrade is using the proper brake fluid and additional cooling for the rotors and calipers.

We use and recommend both Motul Racing Brake Fluid and ATE Super Blue Racing Brake Fluid. The wet boiling temperature is very important for climates that see a lot of moisture, or for Porsche owners that change brake fluid infrequently. The higher the wet boiling temperature, the less moisture will be absorbed by the fluid. Moisture causes corrosion inside the caliper and contributes to sudden brake failure by lowering the temperature at which the fluid will boil.

You can read more technical information about Porsche Brakes on the "Lets Talk" page: http://www.rennsportsystems.com/brakes.html

Brake Cooling for 911's

Here is the superb Brake Cooling kit made by AJ/USA for 911's 69-89. Together with the inner air block-off plates, this makes a significant difference in the performance of these brakes.

This is a very effective solution for cooling the brakes found on the 69-89 911's, and 930 through Carrera braking systems.

                                           Brake Kits

These kits use various Brembo Calipers and Rotors. Used by many Formula 1 teams, ALMS teams, and most Porsche racers, Brembo Racing Brake components are among the finest brake systems available anywhere in the world. Some of these rotors are drilled however, so please remember that all cross-drilled rotors can develop cracks, sooner or later. Gas-slotted rotors are much more durable with a small increase in weight over its cross-drilled equivalent. This list is just a sample of the Brake Upgrades that we have available.

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930 Turbo Brakes for all 911's 1969 - 1989

A very popular kit for narrow-fendered 911's, 69-89 is the 930 Turbo brake setup. These rotors and calipers can be adapted to any of these cars and will provide amazing braking power since these cars are much lighter than a Turbo. These are the biggest brakes that will fit inside the 15" Fuchs wheels and fit inside the narrow front fenders of this generation of 911.

These kits are complete with 4 excellent, used 930 calipers, 4 new custom 2-piece rotors, a new 23mm master cylinder and all hardware & machine work required to bolt these on. Contact us for availability.

Here are just a few of our Brake kits:

  '69 to '89  911 - '76 & '77 Turbo -  '78 to '89 Turbo                                      

930 Turbo: Front: Factory 930 calipers (used-perfect) with custom Brembo 304mm rotor/hat assembly, all mounting hardware, short lines & spacers. Rear: Factory 930 calipers (used-perfect) machined to fit, OEM rotors, mounting hardware, and custom short lines. The required 23mm MC and ATE Super Blue fluid is included. Pads are extra with choice of Ferodo DS 2500 or various Pagid street & racing pads. (Fits inside 15" or 16" Fuchs wheels)

GTP Brakes

Brembo’s new GTP line of Porsche Performance Braking Upgrades features a variety of improvements over the ubiquitous "Big Reds".

Available in front or rear kits for 1969 – 1989 911 and 930 Turbo vehicles, the GTP system includes all mounting hardware, stainless steel braided brake lines, high performance brake pads and the following components:

Brembo High Performance Aluminum 4 Piston fixed Caliper – This caliper offers dramatic increases in both stopping power and pedal feel over the stock Porsche calipers, even the "Big Red" calipers that have become so popular. The Brembo calipers are both lighter and of higher rigidity than Big Reds, the decreased weight means better handling through decreased unsprung mass while the increased rigidity allows both higher clamping force and incredibly consistent pedal response.

12.7" (322mmx32mm front & 322x28mm rear) Porsche cross-drilled and vented performance rotors – The front rotor is a 2 piece assembly with a light-weight billet aluminum hat that both saves additional weight and shields the hub from a large portion of the intense heat that builds in the rotor in performance braking situations. The rear rotor is of the single piece design but with the Brembo-exclusive drum extension that allows proper functioning of the stock parking brake mechanism. The nearly 13" diameter of the discs contribute to the overall stopping power of the system by increasing the available brake torque.

Brembo engineered mounting Brackets – Manufactured to exacting specifications by Brembo, these high grade, billet aluminum brackets position the Brembo calipers in the optimum position to maximize the caliper/rotor package.

· Increased Performance and Improved Balance

· Complete, Ready to Install kits

· Brembo Engineered and Manufactured

· Improved Brake Torque and Modulation with High Performance Brembo Calipers

· Front calipers use 40mm & 44mm pistons; rears have 36mm & 40mm pistons

· Allows for Full Coverage, Fully Functioning, Parking Brake

· High Performance Pads, Stainless Brake Lines and all Hardware Included

· 23mm MC and ATE Super Blue brake fluid included

The Brembo GTP Brake Systems for the 911, 911S, 911SC, 911 Carrera and 930 Turbo are available now. Available in Black, Red or Silver these systems offer significantly increased performance with retail prices of $1990 for a complete front kit and $1890 for a complete rear kit.

Brembo North America also introduced the GTP Lightweight kits for 1969-1989 Porsche 911s and 930s with 16" wheels. The GTP-L utilizes upgraded Brembo 4 Piston Calipers front and rear with a 2 piece, floating, Brembo race disc in front and either a 1 piece cast or 2 piece Brembo in the rear. These kits have been designed to fit under most 16" wheels, allowing a much wider range of applications and fitments. Engineered, designed and manufactured by Brembo with all the attention to detail for which Brembo is known, the GTP-L kits include all mounting hardware and brackets, SS brake lines, and high performance brake pads as well as the following calipers and rotors:

Brembo Cast Aluminum, High Performance, 4 Piston Calipers in Red, Black or Silver

Front - 2 Piece Brembo Racing vented and cross-drilled or slotted 12.3" (313mmx28mm) rotor with Brembo Racing lightweight billet aluminum hats. These rotors are true "floating" rotors using Brembo’s Racing derived technology that allows extreme performance with very low weight and reduced rotating mass.

Rear – 1 Piece Porsche Cross-Drilled and Vented 12" (305mmx28mm) disc with full parking brake capability.

Rear – 2 Piece Brembo Racing vented and cross-drilled or slotted rotors with lightweight, floating, hats. This option is for the enthusiast who values weight savings and does not allow for the stock parking brake.

· Fits under most 16" Wheels. 911's need 944 Turbo-offset Fuchs on the front end for caliper clearance

· Lightweight, Full Floating Brembo Racing Disc at the Front with Option for Rear

· Brembo 4 Piston Calipers with larger diameter, sequential Pistons (36mm-40mm front & 28mm-30mm rear))

· Available in Red, Black or Silver

· High Performance Pads, Stainless Brake Lines and all Hardware Included

· 23mm MC and ATE Super Blue brake fluid included

Pricing for the GT-L kits runs $2390 for the front and rear 2 piece and $1890 for the rear 1 piece option that retains the emergency brake.

Big Red Twin-Turbo Brakes (964-993 only)

Big Red Twin-Turbo Brakes: TT front Calipers with Brembo OEM 322x32mm rotors, billet caliper adapters, all hardware, short lines, OEM pads. Rear: Matching Big Red Carrera RS calipers, billet adapters, Brembo OEM 322x28mm rotors, and all machine work completed to fit. OEM pads and ATE Super Blue included. Stock Turbo MC will work fine. (Must use 17" or larger modular wheels)

-Tip-

When using the S4 or Twin-Turbo Calipers on the front and rear, a brake proportioning valve is highly recommended for race cars. Tilton Engineering makes an excellent one. One can also fine-tune proportioning with different pad compounds.

Big Red Twin-Turbo Brake kit

'89-'94   911 C2/C4 & RS America

Big Red Twin-Turbo brakes: TT front Calipers with Brembo 322mm rotors and pads. Rear: 3.6 Turbo Calipers with Brembo 317mm rotors and pads. (Must use 17" Cup or larger modular wheels)

Brembo GT Brakes: F-50 front calipers with Brembo 355mmx32mm full floating rotors and pads. Rear: 355mmx28mm rear two-piece rotors with 993 RS calipers and pads. Must use 18" wheels. These are 2-3 lbs/wheel lighter than Big Reds.

'91-'93   C2 3.3 litre Turbo (965)

Brembo GT Brakes: F-50 Calipers with full-floating 355mmx32mm cross-drilled rotors and pads. Rear: 993 RS calipers with 355mmx28mm two-piece rear rotors with pads. ATE Super Blue fluid is included. These are lighter than Big Reds by 2-3 lbs/wheel. Must use 18" wheels.

You can also use stock Porsche Calipers with custom AP racing cross-drilled, full-floating 13" rotors and hats to save 3 lbs per side of unsprung weight compared to stock rotors.

'95-'98   993 and Twin Turbo

Big Red Twin-Turbo Brakes: TT Calipers with Brembo 322mm rotors and OEM pads. Rear: Matching Carrera RS calipers and 322mm rotors and OEM pads. Stock MC works OK but TT MC is better. ATE Super Blue fluid is included.

Brembo EVO Brakes:  Big Red F-50 calipers with Brembo 355mmx32mm cross-drilled, full-floating rotors and pads. Rear: Carrera 3.8 RS rear calipers and 355mmx28mm two-piece rear rotors. This kit is 2-3 lbs/wheel lighter than Big Red TT brakes!

996 - 996 TT - GT-3

We have various Twin-Turbo & GT-3 caliper and rotor upgrades as well as replacements for the troublesome PCCB rotors. Call Rennsport Systems for details.

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All Brake kits include :

1)  New Calipers in Red or Black (except 930 kits).

2)  New Rotors with hats, fully assembled and torqued, ready for installation.

3) Custom billet, anodized, caliper adapters (except 930 kits)) with all necessary hardware.

4) 1 liter of Brake Fluid (ATE Super Blue).

5) Stainless Steel lines to the calipers.

6) A 23mm Master Cylinder (manual or boosted)

We also carry and recommend the excellent Pagid racing or street brake pads in the Orange (RS-4-4), Black (RS-14), Yellow (RS-19) or Sport (RS-4-2) compounds for all Porsches. Here is a sample of what we stock:

Rennsport Systems has a lot more kits for racing applications. Orders for custom brake kits are accepted but please remember that the prices will vary and a reasonable lead time is required.

-Tips-

Brake Performance increases from the various upgrades is dependent upon rotor diameter, thickness, caliper piston size, and brake pad area. The latter may be used to make a rough estimation of brake performance.

930 Turbo Pads are almost twice as large as Carrera Pads.

928 S4-type Pads are approximately 45% larger than 930 Pads.

Big Red/Turbo 3.6/C2 RSR Pads are approximately 100% larger than the 930 Pads.

There are several variations of Brembo Calipers that use the 928 S4-type pad. These have different size pistons and mounting options. Both Red and Black versions are available. Other colors are available at extra cost