RENNKIT™ Brake System Upgrades
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Cal*Cool™ Brake Caliper Cooling Radiators
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Girodisc 2-Piece Rotors
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Brake Pads – Ferodo Racing & Performance Friction (PFC)
RENKIT™ Cal*Cool™ CALIPER COOLING RADIATORS
for 996 Turbo / Carrera 4S and 997.1 C2S / C4S with Larger 350 mm Rotors (not PCCB)
A popular upgrade to the 996 Carrera 4S and Turbo are larger diameter rotors. By swapping out stock 330 mm rotors to larger 350 mm rotors better braking is achieved, like the 997 Turbo. This change provides ultimate cooling, better braking action and feel. Everything you need to move the caliper further out to accommodate the 350 mm rotor swap.
FRONT Cal*Cool™ KIT $139.99
REAR Cal*Cool™ KIT $149.99
SAVE $ with BOTH FRONT & REAR Cal*Cool™ KIT $289.99
Cal*Cooler™ Kit + Girodiscs – ALL 4 CORNERS
BEST VALUE – Set of 4 Girodisc 350mm 2-Piece Rotors PLUS Cal*Cooler Kit for all 4 Corners – Save over purchasing separately!
ULTIMATE upgrade, use existing pads (or upgrade to more aggressive track pads).
SAVE $ – Girodisc + Cal*Cool™ ALL 4 CORNERS
$2999
A known problem is brake calipers over-heat and cook the brake fluid during high speed track use:
NOTE: You may have to slightly modify the cooling plates depending upon your aftermarket equiment (e.g. coil overs) or model (e.g. 997 C4S).
Rennkit™ has the solution: Cal*Cool™ brake caliper coolers. A quick modification that allows excess heat to dissipate much faster. Conductive and convective heat transfer quickly dissipates brake caliper heat while driving. When parked, conductive and radiative heat transfer continue to effectively remove heat from hot calipers.
Track Test #1 – Autobahn Country Club, Joliet, IL – 996 Turbo with Stage 1 tune, NASA HPDE advanced group; all 4 corners remained below 370F:
Track Test #2, The monster, Road America in Wisconsin – 996 Turbo with Stage 1 tune, PCA HPDE advanced run group. Two days on track. Added lower temperature Thermolabels to all 4 corners. NEVER EXCEEDED 330F!
NEVER EVEN REACHED 330F!
From our customer Billy Browne: “My 02tt is proof positive of your track statement. I added your Cal*Coolers… & she braked relentlessly without any surrender!”
Save your brakes! Cal*Cool™ brake coolers are easily inserted between caliper and wheel hub carrier using provided bolts. Far more stability, conduction and surface area than simple collars that others sell. Reduced brake vibration, fade and fatigue. All hardware is included, along with easy to follow step by step illustrated instructions backed by the customer service that Rennkit™ is known for. Come with 2 year limited warranty.
(NOT FOR CARS WITH STOCK 330 mm ROTORS or PCCB Ceramic brakes)
Kit contents:
- Cal*Cool™ Brake Caliper Coolers for 350 mm Brake rotors
- Hex Socket Bolts
- High Temp Heat Transfer Paste
- Detailed Illustrated Step by Step Instructions (emailed with order):
READ MORE
2-PIECE ROTORS
Leading rotor upgrade for 996 / 997 / 991 Series Porsches®
Model
|
Price
|
| 996.2, 997.1 GT3 – FRONT |
$ 1,300 |
|
|
| 996.1 GT3, incl. spacers & bolts – FRONT |
$ 1,300 |
|
|
| 986, 987, 996, 997.1 – FRONT |
$ 1,200 |
|
|
| 996, 997, incl. spacers & bolts – FRONT |
$ 1,300 |
|
|
| 981, incl. spacers & bolts – FRONT |
$ 1,200 |
|
|
| 380mm – FRONT |
$ 1,700 |
|
|
| 993 RS, Turbo – FRONT |
$ 1,200 |
|
|
| 991.1 S, 4S, GTS – FRONT |
$ 1,300 |
|
|
| 997 GT3 Cup 380x34mm – FRONT |
$ 1,700 |
|
|
| 997 GT3, 380mm – FRONT |
$ 1,700 |
|
|
| 991 GT3 – FRONT |
$ 1,700 |
|
|
| 996 GT3 Cup – FRONT |
$ 1,300 |
|
|
| Carrera, 981, 718, incl. spacers & bolts – FRONT |
$ 1,300 |
|
|
| 991 GT3, GT2RS PCCBIron Rotor Conversion – FRONT |
$ 1,900 |
|
|
| GT4, 991, 992 PCCBIron Rotor Conversion – FRONT |
$ 1,900 |
|
|
| 991 GT3 Cup (380×34) – FRONT |
$ 1,700 |
|
|
| GT4 Clubsport (380×34) – FRONT |
$ 1,700 |
|
|
| 718 S, 991.2, 992 Carrera, incl. spacers & bolts – FRONT |
$ 1,300 |
|
|
| 991 GT3 Cup (380×32) – FRONT |
$ 1,700 |
|
|
| GT2 RS Clubsport – FRONT |
$ 1,900 |
|
|
| GT4 Clubsport (380×32) – FRONT |
$ 1,700 |
|
|
| 992 GT3 – FRONT |
$ 1,900 |
|
|
| 992 GT3 PCCBIron Rotor Conversion – FRONT |
$ 1,900 |
|
|
| 986, 987 – REAR |
$ 1,200 |
|
|
| 350mm – REAR |
$ 1,300 |
|
|
| 996, 997, incl. spacers & bolts – REAR |
$ 1,300 |
|
|
| 996, 991, 992, incl. spacers & bolts – REAR |
$ 1,300 |
|
|
| 996, 997.1 Carrera, incl. spacers & bolts – REAR |
$ 1,200 |
|
|
| 981, 718 incl. spacers & bolts – REAR |
$ 1,200 |
|
|
| Cayman Iron Conversion, 981 Spyder – REAR |
$ 1,300 |
|
|
| 718 GTS 4.0, incl. spacers & bolts – REAR |
$ 1,300 |
|
|
| 993 RS, Turbo – REAR |
$ 1,200 |
|
|
| 997 GT3 Cup – REAR |
$ 1,300 |
|
|
| 996 GT3 Cup, incl. spacers & bolts – REAR |
$ 1,300 |
|
|
| 991 GT3 – REAR |
$ 1,700 |
|
|
| 991 GT3, GT2RS PCCBIron Rotor Conversion – REAR |
$ 1,900 |
|
|
| 981 GT4, 991 Turbo – REAR |
$ 1,700 |
|
|
| GT4, 991, 992 PCCBIron Rotor Conversion – REAR |
$ 1,900 |
|
|
| GT4 Clubsport (380×32) – REAR |
$ 1,700 |
|
|
| 991 GT3 Cup (380×30) – REAR |
$ 1,700 |
|
|
| GT2 RS Clubsport – REAR |
$ 1,900 |
|
|
| GT4 Clubsport (380×30) – REAR |
$ 1,700 |
|
|
| 992 GT3 – REAR |
$ 1,700 |
|
|
| 992 GT3 PCCB Iron Rotor Conversion – REAR |
$ 1,900 |
|
|
Why upgrade to Girodisc rotors on your high-performance Porsche 911?
- Replaces current heavy 1-piece iron rotors with the lighter weight Girodisc 2-piece unit (Aluminum/Iron)
- Reduces unsprung weight at each corner – more responsive suspension
- For 996 Turbo and C4S; easily upgrade to larger diameter 350 mm rotors for better stopping force
- Replace expensive PCCB ceramic rotors with less costly 2-piece aluminum/iron rotors, especially on the track.
The central hat is 6061-T6 aluminum. The disc is a proprietary cast iron and machined start to finish by Girodisc. Rotors utilizes a curved vane design, developed in racing to act as a centrifugal fan, forcing cooling air through the disc.
Drilled holes are not used as they tend to crack under heavy use such as at the track. The rotor and hat have a floating mount system, utilizing 8 or 10 high strength alloy steel drive pins, manufactured to Girodisc specifications, with cadmium plating for long lasting corrosion protection. The pins take the load from braking actions while maintaining axial and radial float between hat and disc. The pins are secured with grade 12 cap screws and hardened washers. To keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers. This allows the rotor to grow with heat expansion, but eliminates rattle and noise associated with floating rotors. This float allows the rotor to self center between the pads.
READ MORE
Bonus: Once the Girodisc rotors are in place, simply replace the cast iron disc once worn below suggested limits.
We have the rebuild kit as well; iron rings with all hardware and instructions to replace the iron rotors. CONTACT US for rings only pricing.
BRAKE PADS
There are four compounds to choose from, Street/Track to full on Endurance Racing. Ferodo is currently a top choice at the track.
Ferodo DS UNO Compound
Ferodo Racing has made great strides in pad development over the past few years and DS UNO is their latest offering. For those that enjoy the performance of the DS1.11 in club racing, HPDE, and time trials, but just want a more aggressive bite, the DS UNO is a great choice. They don’t wear quite as long as the DS1.11, but do offer a higher overall mu once reaching track temperatures.
Year/Model
2016
|
981 GT4
|
2013
|
991 GT3
|
2013
|
991 Turbo
|
Ferodo DS3.12 Compound
The DS3.12 is the latest evolution of Ferodo’s DS line. Sports cars today have more of everything: More horsepower, more aero, higher curb weight and stickier tires. These attributes place great demands on the vehicle’s brake system. The Ferodo DS3.12 is a modern pad compound designed to explicitly handle those demands. Ferodo Racing’s DS3.12 pad compound is proving to be a tremendous asset for Porsche drivers participating in club racing, HPDE, and time trials. The DS3.12 shows the flattest torque curve across the broadest temperature range we’ve ever tested. The brake pedal is going to feel exactly the same heading into every turn of every lap, providing tremendous consistency and repeatability. The DS3.12 has a higher mu than Ferodo’s other compounds, so less pedal pressure is required to initiate the desired response. It is also unfadable, showing no drop in performance at any temperature. In dyno testing, the DS3.12 has shown superior wear rates to the other Ferodo compounds, while minimizing excessive disc wear. The DS3.12 pads are becoming the gold standard in comparison to other race pad compounds.
Year/
|
Model
|
2016
|
981 GT4
|
2013
|
991 GT3
|
2013
|
991 Turbo
|
Year/
|
Model
|
2008
|
997 Carrera 3.6, 3.4
|
Year/
|
Model
|
2012
|
981 Boxster S/Cayman S
|
2017
|
718 Cayman S/GTS/Cayman (Base)
|
Year/
|
Model
|
2012
|
991.1 and 991.2 Carrera S/GTS
|
Year/
|
Model
|
1999-2004
|
996 Turbo
|
2005-2008
|
997 Carrera S
|
2006
|
996 Carrera S
|
2009
|
997 Carrera S/GTS
|
Year/
|
Model
|
1999-2004
|
996 C2/C4
|
2005-2008
|
997 Carrera/C2/C4
|
2005-2012
|
987 Cayman S
|
2005-2012
|
987 Boxster S
|
Year/
|
Model
|
2002-2005
|
996 GT3
|
Year/
|
Model
|
2005-2008
|
997.1 – 997.2 GT3/RS & Turbo
|
2009-2012
|
997.2 GT3/RS & Turbo
|
Year/
|
Model
|
2014+
|
Cup Car
|
Ferodo DS1.11 Compound
The DS1.11 is one of Ferodo Racing’s latest endurance race pad offerings. The DS1.11 is known for its extremely flat torque curve, which means that as temperatures go up, the response through the brake pedal remains consistent. The DS1.11 can be thrashed all day without having it burn up or fade, it’s easy on discs, and doesn’t have many of the judder or vibration issues that competing products exhibit. If you want an extremely solid, all-around race pad that will perform well and last longer, the DS1.11 is the perfect choice.
Year/
|
Model
|
2016
|
981 GT4
|
2013
|
991 GT3
|
2013
|
991 Turbo
|
Year/
|
Model
|
2017
|
718 Cayman S/GTS, Cayman (Base)
|
2012
|
981 Boxster S/Cayman S
|
Year/
|
Model
|
2008
|
997 Carrera 3.6, 3.4
|
Year/
|
Model
|
2012
|
991.1 and 991.2 Carrera S/GTS
|
Year/
|
Model
|
2009
|
997 Carrera S, GTS
|
2006
|
996 Carrera S
|
2005-2008
|
997 Carrera S
|
1999-2004
|
996 Turbo / C4S
|
Year/
|
Model
|
2005-2008
|
997 Carrera, C2, C4
|
2005-2012
|
987 Cayman S
|
2005-2012
|
987 Boxster S
|
1999-2004
|
996 C2/C4
|
Year/
|
Model
|
2002-2005
|
996 GT3
|
2005-2008
|
997.1 997.2 GT3, RS & Turbo
|
2009-2012
|
997.2 GT3, RS & Turbo
|
Ferodo DS2500 Compound
Although we always recommend using a dedicated race pad for the track, the DS2500 is one of the best hybrid street/track pads on the market. It features a moderately high bite and solid fade resistance of a track pad, with relatively low dust and noise levels of a traditional street pad. When used as a street pad, it may produce some squeal on certain vehicle platforms under certain conditions (cold rotors). During aggressive driving, the DS2500 is known for its flat torque curve, which means as temperatures go up, the response through the brake pedal remains consistent. If you drive aggressively on the street, do some canyon runs, autoX, or occasional HPDE track time, the DS2500 is a solid choice.
When used on higher HP, heavier cars (2,800 lbs+) at the track with race tires, pad wear rates tend to be higher than with Ferodo’s other pad compounds. Under these conditions, the Ferodo DS1.11 or DS UNO are better choices.
Year/
|
Model
|
2002-2005
|
996 GT3
|
Year/
|
Model
|
2005-2008
|
997.1 997.2 GT3, RS & Turbo
|
2009-2012
|
997.2 GT3, RS & Turbo
|
Year/
|
Model
|
1999-2004
|
996 C2/C4
|
2005-2012
|
987 Boxster S
|
2005-2012
|
987 Cayman S
|
Year/
|
Model
|
1999-2005
|
996 Turbo
|
2005-2009
|
997 Carrera S
|
2005
|
996 Carrera S
|
2009
|
997 GTS
|
Year/
|
Model
|
2012
|
991.1 and 991.2 Carrera S/GTS
|
Year/
|
Model
|
2008
|
997 Carrera 3.6, 3.4
|
Year/
|
Model
|
2012
|
981 Boxster S/Cayman S
|
2017
|
718 Cayman S/GTS/Cayman (Base)
|
Year/
|
Model
|
2013 –
|
991 GT3
|
2013 –
|
991 Turbo
|
2016
|
981 GT4
|
Year/
|
Model
|
2005-2008
|
997 Carrera, C2, C4
|
These highly recommended pads come in two compounds. PFC is involved with numerous Sports Car events across the globe, including:
– IMSA
– Continental Tire Sportscar Challenge
– Porsche Cup Racing
– Pirelli World Challenge
…and many more.
08 Brake Pad Compound
Less aggressive bite and fade resistance than the 11 compound pad with better wear for track use. Best when rotors are warmed up. Many enthusiasts use this pad for the larger fronts and the 11 compound pad on the rears to slightly increase braking bias toward the rear’s smaller pads – particularly on the water cooled Turbos.
Year/
|
Model
|
1996-2005
|
986 Boxster
|
2005
|
987 Boxster
|
2005-2008
|
Cayman
|
Year/
|
Model
|
1999 – 2004
|
996, C2, C4
|
1999-2005
|
986, Boxster S
|
2005
|
987, Boxster S
|
2005
|
997 Carrera
|
2005 – 2008
|
997 Carrera
|
2009-2012
|
Cayman
|
2005-2012
|
Cayman S
|
Year/
|
Model
|
2006 -2012
|
997 GT3 RS w factory Steel rotors
|
Year/
|
Model
|
2012
|
981 Boxster S
|
2013
|
981 Cayman S
|
Year/
|
Model
|
2008
|
997 Carrera
|
Year/
|
Model
|
1999 – 2001
|
911 (996) GT3 Cup Car All Models
|
2001 – 2005
|
911 (996) Turbo All 4S
|
2002-2004
|
996 C4S
|
2005 – 2008
|
997 Carrera S
|
2009
|
997 Carrera S, GTS
|
Year/
|
Model
|
2002 – 2005
|
911 (996) GT3 Cup Car All Models
|
Year/
|
Model
|
2004-2006
|
Carrera GT
|
2006-
|
997 Turbo
|
Year/
|
Model
|
2005 – 2008
|
997 Cup
|
2006-2012
|
997 GT3 RS w PFC slotted Rotors
|
Year/
|
Model
|
2002 – 2005
|
996 GT2
|
11 Brake Pad Compound
More aggressive initial/hot bite and fade resistance than the 08 pad for track use. Best when rotors are warmed up. Many enthusiasts use this pad on the rear brakes to bump-up bias toward the rear’s smaller pads.
Year/
|
Model
|
1996-2005
|
986 Boxster
|
2005
|
987 Boxster
|
2005-2008
|
Cayman
|
Year/
|
Model
|
1999 – 2001
|
996 GT3 Cup Car All Models
|
2001 – 2005
|
996 Turbo All / 4S
|
2005 – 2008
|
997 Carrera S
|
2009 –
|
997 Carrera S / GTS
|
Year/
|
Model
|
2002 – 2005
|
996 GT3 Cup Car All Models
|
Year/
|
Model
|
2004-2006
|
Carrera GT
|
2007-2011
|
997 Turbo
|
2005 – 2008
|
997 Cup
|
2006-2012
|
997 GT3 RS w/ PFC slotted Rotors
|
Year/
|
Model
|
1996-2005
|
986 Boxster
|
2005
|
987 Boxster
|
2005-2008
|
Cayman
|
2012
|
981 Boxster S
|
2013
|
981 Cayman S
|
REAR – $269
Year/
|
Model
|
2006 -2012
|
997 GT3 RS w factory Steel rotors
|
2008
|
997 Carrera
|
Year/
|
Model
|
2002 – 2005
|
996 GT2
|
Year/
|
Model
|
2013
|
991 GT3 / Turbo
|
2016
|
981 GT4
|
This site is in no way associated with Porsche Cars North America, Inc.
Porsche is a registered trademark of Dr. Ing. h.c. F. Porsche AG.
2-PIECE ROTORS
