Tweet
*** rough and incomplete draft***
Poll options:
1- You are interested and would like to be added to the waitlist.
2- You are interested but need to know more. Pricing is where you expect it to be. (Please post with questions)
3- You would be interested but have 17" wheels or don't want to install new hardware.
4- You are happy with your current brake system and don't mind the feel, performance, or dust.
5- You do not use your brakes. These would only be hidden away in your garage.
CCM technology is great for the track yet it’s benefits for the street are commonly overlooked. These benefits make a big impact on classic less powerful and less developed vehicles when compared to modern performance vehicles. As classic vehicles become more valuable, the desire to preserve them while also improving their usability is a common desire. For a long time, CCM technology was reserved for the latest and greatest supercars, but now it has become available for classic vehicles as well. Of course, the product is easier to implement on some vehicles than others but the 993 (and 964) platform lends well to this newly offered custom engineered bolt-on CCM solution.
As you may be aware, Racing Brake offers a high-performance kit for the 993 utilizing common CCM rotors found on modern cars such as the C6 Corvette ZR1. However, the typical 18” wheels found on these cars do not fit with this brake kit. So, new wheels and tires are required along with a new appearance.
That’s where this new product comes into play. This new kit will fit under most of the common 18” wheels (forged or 3 piece) found on our cars. And is specifically designed to complement the factory braking system. (See below for more details)
We are looking to gauge the market for this product and receive feedback. If it is well received and there is enough interest, we will go into production.
Please participate in the poll and leave a comment if you have any questions.
The primary goal of the system is to:
This kit includes:
PROs:
- Fully bolt-on
- Fits under 18" 3 piece wheels (like Speedline CUP/993RS/GT2, Tramont Cup II, and BBS E88), factory 18" turbo twist wheels, etc.
- Engineered to play nice with factory brake bias, master cylinders, and ABS (may require a M/C swap with another factory 993 unit if you don't have the 25.4mm M/C)
- Reduces unsprung weight (quicker suspension response)
- Reduces rotating mass (less inertia to accelerate of decelerate)
- Reduces braking distances (TBD by how much)
- Reduces brake dust
- Increases brake life
- Increases acceleration
- Increases thermal capacity (read: better on-track performance and more resistance to brake fade)
-fully reversible
- Replacement rotor rings available
CONs:
Costs for the system would be in-line with other kits on the market. Pricing would probably be around $15,000-$17,000
Technical info:
Rotors-
350mmx34mm Front
*Effective rotor diameter = 285mm
410mm diameter to the outermost caliper point
350mm x 28mm Rear with OEM parking brake compatibility.
Effective rotor diameter = 297mm
400 mm diameter to the outermost caliper point
Calipers- Front 32/34/36mm pistons ; Rear 32/34mm pistons
Coefficient of Friction = .45
F/R hydraulic bias = 1.594
Pedal ratio with 25.4mm master cylinder (recommended and stock for 993GT, TT, RS, C4S, C4 and 964RS) = 35.067
Pedal ratio with 23.81 mm master cylinder = 39.94
Brake TQ @ 70bar without PV = 2914 nm Front, 1798 nm rear (1.530 net bias)
Brake TQ @ 70 bar with 55bar PV = 2914 nm Front, 737 nm rear (3.326 net bias)
*removing the PV isn’t required but can be beneficial for track use*
Of note, these rotors are the same size as the 996 PCCB option but using modern tech/construction methods. The 350mm CCM rotor size is also becoming more and more common and a selection of CCM type pads and OEM or replacement rotors are on the market.
Replacement brake pads:
Front: PD1666-360
Rear: PD968-360
Wheel fitment template:
Front: 2R30-K
Rear: 2R31-K
Wheel Compatibility
****so far***
993 Turbo Twists
Tramont Cup II 993 WB fitment 18"
BBS E88 18" for NB or WB fitment
Reference for other brake systems:
Poll options:
1- You are interested and would like to be added to the waitlist.
2- You are interested but need to know more. Pricing is where you expect it to be. (Please post with questions)
3- You would be interested but have 17" wheels or don't want to install new hardware.
4- You are happy with your current brake system and don't mind the feel, performance, or dust.
5- You do not use your brakes. These would only be hidden away in your garage.
CCM technology is great for the track yet it’s benefits for the street are commonly overlooked. These benefits make a big impact on classic less powerful and less developed vehicles when compared to modern performance vehicles. As classic vehicles become more valuable, the desire to preserve them while also improving their usability is a common desire. For a long time, CCM technology was reserved for the latest and greatest supercars, but now it has become available for classic vehicles as well. Of course, the product is easier to implement on some vehicles than others but the 993 (and 964) platform lends well to this newly offered custom engineered bolt-on CCM solution.
As you may be aware, Racing Brake offers a high-performance kit for the 993 utilizing common CCM rotors found on modern cars such as the C6 Corvette ZR1. However, the typical 18” wheels found on these cars do not fit with this brake kit. So, new wheels and tires are required along with a new appearance.
That’s where this new product comes into play. This new kit will fit under most of the common 18” wheels (forged or 3 piece) found on our cars. And is specifically designed to complement the factory braking system. (See below for more details)
We are looking to gauge the market for this product and receive feedback. If it is well received and there is enough interest, we will go into production.
Please participate in the poll and leave a comment if you have any questions.
The primary goal of the system is to:
- improve performance to meet the modern conditions on and off track
- reduce brake dust without sacrificing noise or wheel choice. This option doesn’t require new wheels for most owners running 18". (A fitment check is always a good idea but these have been checked for compatibility with number of known combinations listed below)
This kit includes:
- 2 RB 6-Piston front caliper (6061-T6 forged aluminum alloy)
- 2 RB 4-Piston rear caliper (6061-T6 forged aluminum alloy)
- 2 Front RB CCB rotors 350x34
- 2 Rear RB CCB rotors 350x28
- custom floating brake hats
- custom caliper mounts
- 1 car set brake pads for CCM rotors
- 1 car set SS brake lines
PROs:
- Fully bolt-on
- Fits under 18" 3 piece wheels (like Speedline CUP/993RS/GT2, Tramont Cup II, and BBS E88), factory 18" turbo twist wheels, etc.
- Engineered to play nice with factory brake bias, master cylinders, and ABS (may require a M/C swap with another factory 993 unit if you don't have the 25.4mm M/C)
- Reduces unsprung weight (quicker suspension response)
- Reduces rotating mass (less inertia to accelerate of decelerate)
- Reduces braking distances (TBD by how much)
- Reduces brake dust
- Increases brake life
- Increases acceleration
- Increases thermal capacity (read: better on-track performance and more resistance to brake fade)
-fully reversible
- Replacement rotor rings available
CONs:
Costs for the system would be in-line with other kits on the market. Pricing would probably be around $15,000-$17,000
Technical info:
Rotors-
350mmx34mm Front
*Effective rotor diameter = 285mm
410mm diameter to the outermost caliper point
350mm x 28mm Rear with OEM parking brake compatibility.
Effective rotor diameter = 297mm
400 mm diameter to the outermost caliper point
Calipers- Front 32/34/36mm pistons ; Rear 32/34mm pistons
Coefficient of Friction = .45
F/R hydraulic bias = 1.594
Pedal ratio with 25.4mm master cylinder (recommended and stock for 993GT, TT, RS, C4S, C4 and 964RS) = 35.067
Pedal ratio with 23.81 mm master cylinder = 39.94
Brake TQ @ 70bar without PV = 2914 nm Front, 1798 nm rear (1.530 net bias)
Brake TQ @ 70 bar with 55bar PV = 2914 nm Front, 737 nm rear (3.326 net bias)
*removing the PV isn’t required but can be beneficial for track use*
Of note, these rotors are the same size as the 996 PCCB option but using modern tech/construction methods. The 350mm CCM rotor size is also becoming more and more common and a selection of CCM type pads and OEM or replacement rotors are on the market.
Replacement brake pads:
Front: PD1666-360
Rear: PD968-360
Wheel fitment template:
Front: 2R30-K
Rear: 2R31-K
Wheel Compatibility
****so far***
993 Turbo Twists
Tramont Cup II 993 WB fitment 18"
BBS E88 18" for NB or WB fitment
Reference for other brake systems:
| System Name | Rotors | Piston Area | MC | Hyd Bias | TQ | Bias | TQ w/PV | Bias | Leg |
| 993 18" CCM | |||||||||
| Front | 350x34 | 5460.08803 | 25.4 | 1.594495 | 2450.89702 | 1.530071 | 2450.897 | 3.326242 | 35.067 |
| Rear | 350x28 | 3424.33599 | 1601.81877 | 736.8366 | |||||
| 993RS | |||||||||
| Front | 322x32 | 5076.81373 | 25.4 | 1.472 | 2075.75683 | 1.425637 | 2075.757 | 3.099211 | 33.654 |
| Rear | 322x28 | 3449.46873 | 1456.02075 | 669.7695 | |||||
| 993TT | |||||||||
| Front | 322x32 | 5076.81373 | 25.4 | 2.061 | 2075.75683 | 1.996619 | 2075.757 | 4.340476 | 33.896 |
| Rear | 322x28 | 2463.00864 | 1039.63595 | 478.2325 | |||||
| 964RS | |||||||||
| Front | 322x32 | 5076.81373 | 25.4 | 1.571984 | 2142.92307 | 1.712568 | 2142.923 | 3.722975 | 32.78567 |
| Rear | 299x24 | 3229.55725 | 1251.29196 | 575.5943 | |||||
| Brembo GT 18" 6/4 | |||||||||
| Front | 355x32 | 4680.97305 | 25.4 | 1.769596 | 2219.1323 | 1.830407 | 2219.132 | 3.979146 | 28.91686 |
| Rear | 345x28 | 2645.22101 | 1212.37092 | 557.6906 | |||||
| 997.2 GT3RS | |||||||||
| 380x34 | 4253.71645 | 26.99 | 1.17128 | 2115.73476 | 1.266748 | 2115.735 | 2.753799 | 27.565 | |
| 350x28 | 3631.68111 | 1670.21014 | 768.2967 | ||||||
| 996 GT3RS PCCB | |||||||||
| 350x34 | 5108.22965 | 25.4 | 1.676289 | 2284.91112 | 1.635966 | 2284.911 | 3.556447 | 32.19046 | |
| 350x28 | 3047.34487 | 1396.67434 | 642.4702 | ||||||
Comment