PORSCHE 911 GT3 (991): BREMBO 2-PIECE TYPE III DISCS

Porsche’s 911 GT3 (991) is a demanding platform on the OE brake package with unique demands (475 horsepower, over 3200 lbs curb weight, and multiple electronic braking / traction aids). The Brembo OE brakes equipped on the Porsche 911 GT3 & Turbo models are some of the most sophisticated designed for an OE application. The Porsche Brembo OE brakes utilize 6-piston aluminum fixed monobloc calipers front and 4-piston aluminum fixed monobloc calipers rear. The brake discs are heavy duty 380 x 34 mm ventilated front & 380 x 30 mm rear brake discs. The Porsche 911 GT3 brakes use a wide annulus (radial depth) front and rear pad for maximum swept area. The OE pads are also 18 mm thick front and rear which is comparable to most high performance aftermarket calipers.

Generally speaking about later model 911 platforms: The GT3 has always been more demanding on the rear brakes due to aggressive rear brake balance while the Turbo models are generally more demanding on the front brakes. While the OEM specification Porsche brakes all look similar, the caliper piston sizes, hydraulic systems and car balance can be considerably different.

There are certain limitations with the OE components on any high performance application as they are designed specifically for the car manufacturers to their requirements of comfort, wear rates in various road environments, cost and serviceability.

As the braking system’s primary function is to dissipate heat, Brembo uses purpose-designed discs in order to increase the fade resistance and thermal capacity of the system. These discs are directionally ventilated for enhanced cooling and slotted for better performance and continuously refreshing the pad surface. Brembo 2-piece discs are made up of a proprietary advanced cast-iron alloy which offers an exceptional coefficient of friction and resistance to thermal shock and fatigue.

The same Brembo Racing discs trusted every weekend in professional motorsports are also utilized in the Brembo Performance Program (GT, GT-R & Race Systems).

GMG 991 GT3 with Brembo Type III 2 piece discs. Photo Credit : GMG Racing

BENEFITS OF BREMBO 2-PIECE DISC UPGRADES:

• OEM INTEGRATION: Brembo 2-piece disc upgrades are designed to work seamlessly with the OE calipers and systems (manufactured by Brembo for Porsche). This guarantees the utmost in safety and seamless fitment.
• LIGHTWEIGHT: Disc assemblies include an outer iron disc with aluminum bell/hat and provide decreased corner weights to improve vehicle dynamics including handling, acceleration, and braking.
• TYPE III SLOT PATTERN: Extensively used in professional motorsports, the Type III slot pattern offers a high initial response with excellent release characteristics.
• HIGH THERMAL CAPACITY: Greatly improved thermal capacity and heat management over OE discs and other aftermarket discs in the market. This also improves braking performance and allows for greater longevity of the components.
• FRICTION MATERIALS: Everything we learn by supporting top professional racing teams throughout the world goes into selecting the best brake pad options for all levels of street, track and racing use.
  

PACKAGES INCLUDE:

1. Outer Brembo Type III discs (qty 2)
2. 6061 T6 aluminum (machined from billet), hard anodized bell/hat
3. Complete Brembo disc hardware (D-type bobbin) w/ anti-rattle springs. (Full Floating Option Available Upon Request

GMG Racing 991 GT3 Equipped with Brembo Racing discs. Photo Credit: GMG Racing

BREMBO 911 GT3 (991) 2-PIECE DISC OPTIONS:

FRONT BREMBO 2-PIECE DISC OPTIONS: 911 GT3 OE IRON EQUIPPED

MSRP COMPLETE AXLE SET: $1,895.00
911 GT3 Front disc specifications:

–          380 x 34 disc – Lightweight
–          Type III slot type
–          20 mm air-gap (wide air-gap for overall brake disc weight reduction)
–          72 vane ventilation
–          21 lbs – disc ring
–          23 lbs – complete 2-piece disc assembly
–          Compatible with 911 Turbo (991) Models

911 GT3 Front “High Thermal” disc specifications:

–          380 x 34 disc – High Thermal
–          Type III or Type V “Endurance” slot type available.
–          17 mm air-gap (narrow air-gap for the brake disc to have extra thermal capacity and durability under higher brake demand conditions)
–          72 vane ventilation
–          23 lbs – disc ring
–          24.5 lbs – complete 2-piece disc assembly
–          Compatible with 911 Turbo (991) Models

REAR BREMBO 2-PIECE DISC OPTIONS: 911 GT3 OE IRON EQUIPPED

MSRP COMPLETE AXLE SET: $1,895.00

911 GT3 Rear “High Thermal” disc specifications:

–          380 x 30 disc – High Thermal
–          Type III slot type
–          16 mm air-gap
–          48 vane ventilation
–          20 lbs – disc ring.
–          22 lbs – complete 2-piece disc assembly
–          Compatible with factory braking brake (e-brake)
–          Compatible with 911 Turbo (991) Models

PORSCHE 911 GT3 (991) OEM DISC WEIGHTS – FOR REFERENCE:

– Front, 380 x 34: 24 lbs
– Rear, 380 x 30: 23.4 lbs

PORSCHE 911 Turbo (991) OEM DISC WEIGHTS – FOR REFERENCE:

– Front, 380 x 34: 27.8 lbs
– Rear, 380 x 30: 24 lbs

2015 BREMBO RACING AND PORSCHE MOTORSPORTS INVOLVEMENT:

Brembo Racing works very closely with Porsche Motorsport as a technical partner on multiple factory motorsport programs. Some of these include, but are not limited to, the 2015 spec Porsche 919 Le Mans Prototype program for the LMP class and the 911 (991) RSR for the GT Class. The 919 Hybrid is Porsche Motorsport’s latest fully factory supported effort since 2014 and features various cutting edge technologies which will eventually be carried through to road going vehicles.

LMP Class:

For 2015, to be competitive in the top prototype class, the Porsche 919 Hybrid has been re-engineered from the ground up. One of the many key changes is a Brembo Racing carbon brake package to maximize braking performance and reliability since the new 2015 model has an upgraded chassis, aerodynamics and has more power compared to 2014.

Brembo Racing Porsche 919 brake package:

Brake Calipers: Brembo Racing motorsport calipers.
Brake Discs: Brembo Racing carbon-carbon brake discs.

2015 Porsche 919 Hybrid LMP1 Car. Photo Credit: Porsche AG

GT Class:

Porsche’s 911 (991) RSR is built to compete at the 24 hours of Le Mans and is the most sophisticated GT racing sports-car offered by Porsche Motorsport unlike the Cup Cars designed generally for customer / private teams. The 991 RSR is also specified with a Brembo Racing cast iron brake package. Teams can choose disc and pad configurations based on their individual car balance, setup, circuit and brake demand.

Brembo Racing Porsche 991 RSR brake package:

Brake Calipers: Brembo Racing motorsport calipers (6 piston – front, 4 piston – rear)
Brake Discs: Brembo Racing 380 mm and 355 mm cast iron brake discs.

Brembo is the OE brake supplier to Porsche, offering Performance upgrades for the various 991 platforms (Carrera S, GT3, Turbo models) using similar components and technology developed for professional motorsport.

MOTORSPORTS IMAGERY
Photo Credits: James Boone, Porsche Motorsport