New Product: Essex/AP Racing Front and Rear Complete Radi-CAL GT3 Brake Kit..finally!
#61
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We have miles of wheel clearance on the rear as well...
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'09 Carrera 2S, '08 Boxster LE (orange), '91 Acura NSX, Tesla Model 3 Performance, Fiesta ST
Jeff Ritter
Mgr. High Performance Division, Essex Parts Services
Essex Designed AP Racing Radi-CAL Competition Brake Kits & 2-piece J Hook Discs
Ferodo Racing Brake Pads
Spiegler Stainless Steel Brake Lines
704-824-6030
jeff.ritter@essexparts.com
'09 Carrera 2S, '08 Boxster LE (orange), '91 Acura NSX, Tesla Model 3 Performance, Fiesta ST
Jeff Ritter
Mgr. High Performance Division, Essex Parts Services
Essex Designed AP Racing Radi-CAL Competition Brake Kits & 2-piece J Hook Discs
Ferodo Racing Brake Pads
Spiegler Stainless Steel Brake Lines
704-824-6030
jeff.ritter@essexparts.com
#62
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Below are some pics comparing the OEM calipers to the AP Racing Radi-CAL calipers we are using in our kit. We'll be posting up some comparative disc pics and other details early next week.
Our front six piston is considerably smaller, and weighs 6.1 lbs. vs. 9.3 lbs. for the OEM unit.
Our caliper isn't nearly as tall, allowing it to hug the disc more tightly, and offering fewer issues with debris in the wheel barrel/across the top of the caliper. Also note that the fluid paths in the AP Racing Radi-CAL are internal. There is no external cross-over pipe/tube from one side of the caliper to the other. Internal fluid pathways reduce the risk of the crossover tube being damaged by track debris, or by knocking a wheel against it when pulling the wheel off or putting it back on. The bleed screws on the front AP Racing calipers are also protected from those situations to a much greater extent.
The front AP Racing caliper only requires the removal of two 6mm bridge bolts for a pad change:
Our customer has about 6,000 miles total on his car, of which about 3800 are track miles, and he already has a cracked ceramic piston cap and dust boot:
Here is the rear caliper comparison. Our rear caliper is 4.85 lbs. vs. 7.5 lbs. for the OEM unit:
Pad changes on the rear AP caliper are even easier...just one bolt.
Our front six piston is considerably smaller, and weighs 6.1 lbs. vs. 9.3 lbs. for the OEM unit.
Our caliper isn't nearly as tall, allowing it to hug the disc more tightly, and offering fewer issues with debris in the wheel barrel/across the top of the caliper. Also note that the fluid paths in the AP Racing Radi-CAL are internal. There is no external cross-over pipe/tube from one side of the caliper to the other. Internal fluid pathways reduce the risk of the crossover tube being damaged by track debris, or by knocking a wheel against it when pulling the wheel off or putting it back on. The bleed screws on the front AP Racing calipers are also protected from those situations to a much greater extent.
The front AP Racing caliper only requires the removal of two 6mm bridge bolts for a pad change:
Our customer has about 6,000 miles total on his car, of which about 3800 are track miles, and he already has a cracked ceramic piston cap and dust boot:
Here is the rear caliper comparison. Our rear caliper is 4.85 lbs. vs. 7.5 lbs. for the OEM unit:
Pad changes on the rear AP caliper are even easier...just one bolt.
#64
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#66
Last edited by Mech33; 02-19-2018 at 06:34 PM.
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Would these by chance work on a base 991 5-lug?
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#69
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Thanks!
Our 981 GT4 kit with 5 lug hats will be launching at the same time as our GT3 kit. We are still trying to get our hands on a base or S 991 to take measurements. If that would be of interest to you, please shoot me a PM.
We have already released complete front and rear kits for the Boxster and Cayman 987, 981, and 718:
Here they are on a 718 Boxster S:
Pre-op:
Would these by chance work on a base 991 5-lug?
We have already released complete front and rear kits for the Boxster and Cayman 987, 981, and 718:
981 and 718
Essex Designed AP Racing Radi-CAL Competition Brake Kit (Front 9661/355mm)- Porsche 981 and 718 Boxster & Cayman
Essex Designed AP Racing Radi-CAL Competition Brake Kit (Rear CP9451/340mm)- Porsche 987, 981, 718 Boxster & Cayman
987
Essex Designed AP Racing Radi-CAL Competition Brake Kit (Front 9661/355mm)- Porsche 986/987 Boxster & Cayman
Essex Designed AP Racing Radi-CAL Competition Brake Kit (Rear CP9451/340mm)- Porsche 987, 981, 718 Boxster & Cayman
Here they are on a 718 Boxster S:
Pre-op:
#70
How do do the AP caliper selections differ for the regular 981 Catman kits, or are they the same?
Thanks!
Our 981 GT4 kit with 5 lug hats will be launching at the same time as our GT3 kit. We are still trying to get our hands on a base or S 991 to take measurements. If that would be of interest to you, please shoot me a PM.
We have already released complete front and rear kits for the Boxster and Cayman 987, 981, and 718:
Here they are on a 718 Boxster S:
Pre-op:
Our 981 GT4 kit with 5 lug hats will be launching at the same time as our GT3 kit. We are still trying to get our hands on a base or S 991 to take measurements. If that would be of interest to you, please shoot me a PM.
We have already released complete front and rear kits for the Boxster and Cayman 987, 981, and 718:
981 and 718
Essex Designed AP Racing Radi-CAL Competition Brake Kit (Front 9661/355mm)- Porsche 981 and 718 Boxster & Cayman
Essex Designed AP Racing Radi-CAL Competition Brake Kit (Rear CP9451/340mm)- Porsche 987, 981, 718 Boxster & Cayman
987
Essex Designed AP Racing Radi-CAL Competition Brake Kit (Front 9661/355mm)- Porsche 986/987 Boxster & Cayman
Essex Designed AP Racing Radi-CAL Competition Brake Kit (Rear CP9451/340mm)- Porsche 987, 981, 718 Boxster & Cayman
Here they are on a 718 Boxster S:
Pre-op:
#71
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Essex BBK installed on the front of customer Gary Forlenza's 987S. Now he can hardly wait to get to the track.
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Direct: 843-299-0997
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#72
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How do do the AP caliper selections differ for the regular 981 Catman kits, or are they the same?
Essex BBK installed on the front of customer Gary Forlenza's 987S. Now he can hardly wait to get to the track.
Pads
I had a customer ask me about pads via email. Pads are not included with our kit. Many of our competitors include a set of junk/cheap street pads with their brake kit. We don’t bother doing that, as it’s ultimately a disservice to the customer. Instead, we offer a heavily subsidized first set of Ferodo pads with our kits. Our recommendation for track use would be the Ferodo DS1.11. The fronts would be $200 for the set, and the rears $150. Needless to say, that is a steal for a fantastic set of pads that many owners here are already enjoying in their stock calipers.
#73
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I just finished gathering the final numbers on unsprung weight savings, and it looks like our team was able to just about match the weight of the OEM PCCB brake system! Here they are from lightest to heaviest, and all weights below are in pounds...drum roll please:
Front
OEM PCCB
Caliper= 9.3
Pads= 7.7
Discs= 15.2
Total brake corner weight= 32.2
Essex/AP Racing Radi-CAL BBK
CP9661 caliper= 6.1
Caliper bracket= 1.0
Pads= 5.2
Assembled discs= 21.5
Total brake corner weight= 33.8
OEM Iron
Caliper= 9.3
Pads= 7.7
Discs= 24.2
Total brake corner weight= 41.2
Rear
OEM PCCB
Caliper= 7.5
Pads= 6.1
Discs= 13.5
Total brake corner weight= 27.1
Essex/AP Racing Radi-CAL BBK
CP9449 caliper= 4.85
Caliper bracket= 0.7
Pads= 3.85
Assembled discs= 19.1
Total brake corner weight= 28.5
OEM Iron
Caliper= 7.5
Pads= 6.1
Discs= 24.0
Total brake corner weight= 37.6
The primary benefit of carbon ceramic discs vs. iron is unsprung weight savings. If you're tracking your car, that is pretty much the only tangible benefit. Our system provides the primary benefit of carbon ceramic discs, without all of the pitfalls, compromises, etc. Our system strips approximately 33 pounds of unsprung weight from the car vs. the OEM iron system, and is within 1.5 lbs. per corner of the OEM PCCB system weights.
Front
OEM PCCB
Caliper= 9.3
Pads= 7.7
Discs= 15.2
Total brake corner weight= 32.2
Essex/AP Racing Radi-CAL BBK
CP9661 caliper= 6.1
Caliper bracket= 1.0
Pads= 5.2
Assembled discs= 21.5
Total brake corner weight= 33.8
OEM Iron
Caliper= 9.3
Pads= 7.7
Discs= 24.2
Total brake corner weight= 41.2
Rear
OEM PCCB
Caliper= 7.5
Pads= 6.1
Discs= 13.5
Total brake corner weight= 27.1
Essex/AP Racing Radi-CAL BBK
CP9449 caliper= 4.85
Caliper bracket= 0.7
Pads= 3.85
Assembled discs= 19.1
Total brake corner weight= 28.5
OEM Iron
Caliper= 7.5
Pads= 6.1
Discs= 24.0
Total brake corner weight= 37.6
The primary benefit of carbon ceramic discs vs. iron is unsprung weight savings. If you're tracking your car, that is pretty much the only tangible benefit. Our system provides the primary benefit of carbon ceramic discs, without all of the pitfalls, compromises, etc. Our system strips approximately 33 pounds of unsprung weight from the car vs. the OEM iron system, and is within 1.5 lbs. per corner of the OEM PCCB system weights.
Last edited by JRitt@essex; 02-21-2018 at 01:05 PM.
#74
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Another item I haven't spent too much time on in this thread...service. We offer lifetime service support on our brake kits, which includes caliper rebuilds. If and when the time comes to rebuild your AP Racing calipers, we operate the only authorized AP Racing caliper re-certification center in North America. You send us your tired and abused calipers, and we send them back to you fresh as a daisy. They are disassembled, take a bath in an ultrasonic cleaner, reassembled, and pressure tested. You barely have to get your hands dirty! Here's a shot of the master cylinder and caliper rebuild mayhem leading up to the Rolex 24 Hours at Daytona and the Daytona 500. We had AP Radi-CALs hanging from the ceiling!
#75
Race Director
Sounds like the "golden solution" is some Essex lightweight calipers, together with the ST carbon rotors, in order to achieve:
-ease of pad switching without removing caliper
-lowest weight Combo all of all
-refurbishable rotors
I see trakcar making a run at this.
-ease of pad switching without removing caliper
-lowest weight Combo all of all
-refurbishable rotors
I see trakcar making a run at this.