Stillen - ZL1 AP Radi-CAL Big Brake Kit

[Team STILLEN]

For the last 30 years, Stillen has been one of the world leaders in providing the best in aftermarket products, service and expertise.

A little over a year ago, I started a thread to introduce our NEW AP Radi-CAL Big Brake Kit to the Camaro 5 world and now we would like show what our Big Brake Kit can do for the ZL1!

Here is a little quick rundown again on our AP Radi-CAL Big Brake Kit…

Stillen and AP Racing has launched the new AP Racing Radi-CAL line of calipers used in the STILLEN-engineered Big Brake Kits. These new Radi-CAL road calipers get there heritage from the racing Radi-CAL high performance calipers launched in motorsports in 2007, which have been dominating the likes of F1, F3, NASCAR and countless others. This new caliper design features a 2-piece aluminum body with H-structure, and a non-symmetrical design developed to have a large reduction in mass yet improved resistance to braking torque. Another benefit is increased caliper cooling surface without decreasing structural rigidity.

- Each kit is designed specifically to the vehicle application with special attention to proper piston and rotor sizing to match OE ABS, stability control systems and brake balance.

- Hats and brackets are designed and engineered in Stillen's R&D Department and machined in house with the latest CNC lathe and mill machining.

- Each Kit design is based on vehicle weight, heat index required at maximum speed and GVW to provide repeated high speed stops while managing the heat in the most efficient way using components designed and validated for a high performance environment and every day road use.

- Each kit is complete with calipers, pads, rotor assemblies, hardware, brake lines and instructions.

- Track braking performance that is safe and compliant for road registered vehicles.

Radi-CAL Calipers

- Derived from AP Racing's patented and widely successful race Radi-CAL Calipers

- The unique asymmetrical designed and forged aluminum caliper bodies are tested at over 500,000 cycles of pressure and torque to meet AP Racing's stringent high performance and OE road use validation requirements to provide maximum stiffness and reducing weight.

- Opposed piston design provide better pedal feel and immediate brake response.

- The 6 and 4 piston caliper design allows larger pad surface area to be used which decreases heat at the friction point between the pad material and rotor surface.

- Differential piston sizing to minimize pad taper.

- Forged removable bridge support for east pad change and additional strength to the caliper mouth.

AP Racing Rotor Technology

The AP Racing discs in the Radi-CAL big brake kits are directionally curve vane vented for maximum air flow through the disc. AP Racing's unique curve vaned discs are Dyno and race proven as the best designed rotors for optimized cooling. The curve vane rotor acts like an air pump pulling air into the center of the rotor and blowing it through the veins and out of the top of the rotor. This act allows the rotor to be self-cooling and work extremely efficiently.

AP Racing's Wide Disc Technology (WDT) is used for the most efficient way to transfer heat from the disc. Designs using wider discs with larger air gaps increase air flow rates within the discs as proven by AP Racing's FEA, CFD and TSA testing. This goal was achieved while not increasing disc weight or disc stress and decreasing disc temperatures by up to 300 degrees F.

Larger two piece rotors allow for greater thermal capacity with an eye on weight by using aluminum center bells (hats) that minimize the unsprung weight of the overall disc assembly. This means greater heat management without increasing corner weight. It also increases the effective radius (leverage point) of the brake system which creates more brake torque with same braking effort.

- Designed for larger and wide rotors with taller annulus to increase thermal capacity and reduce rotor surface temperatures for increased pad and rotor life.

Last week, one of our customers took his ZL1 out to Laguna Seca with a newly installed Front and Rear AP Radi-CAL Big Brake Kit!

Front and rear kit details

10-14 Camaro APR77300 Front 6-Piston Calipers 390x36mm 2-Piece floating Rotors

10-14 Camaro APR77600 Rear 4-Piston Calipers 380x26mm 2-Piece floating Rotors

Stainless steel braided brake lines

Aluminum mounting brackets and bells engineered and manufactured at STILLEN in Costa Mesa, California

Fits with factory ZL1 wheels

What happened next was a very happy customer!!

Our customer was able to knock off nearly 5 seconds from his lap time switching from his stock Brembo Brakes to our AP Radi-CAL Kit! No other modification had been made to the vehicle between his previous Laguna Seca session. He reported to us that he was able to enter the corners deeper – well into the 300-200 ft braking zone with confidence and no brake fade using the standard brake pads that come with the kit. His confidence in the brakes allowed him to set the attitude of the car confidently and consistently. Something he reported was not possible with the factory Brembo brakes which exhibited fade and overheating after just a few laps during his previous track sessions.

Even though our customer is an intermediate driver, if you don’t have confidence in your brakes at the race track, you will not be able to reduce your lap times.

Here are a few pictures…

[NW Sam]

What is the cost of the J hook brake kit front and rear? Thanks, Sam.

[ZL1-V]

Very nice! I used a somewhat similar kit from you years ago on my supercharged Escalade. For being so damn heavy, that particular SUV could really STOP!

[Team STILLEN]

Originally Posted by NW Sam

What is the cost of the J hook brake kit front and rear? Thanks, Sam.

PM sent!

Thanks

Originally Posted by ZL1-V

Very nice! I used a somewhat similar kit from you years ago on my supercharged Escalade. For being so damn heavy, that particular SUV could really STOP!

Yeah, these kits are, I believe, the best in the market right now!

JT

[ZL1-V]

Originally Posted by Team STILLEN

PM sent!

Thanks



Yeah, these kits are, I believe, the best in the market right now!

JT

Um, I think you might be a bit biased?

I have used Baer brakes kit, your AP Racing kit, and Brembo twice with a CTS-V and now the ZL1. They all worked well.

[Team STILLEN]

Originally Posted by ZL1-V

Um, I think you might be a bit biased?

I have used Baer brakes kit, your AP Racing kit, and Brembo twice with a CTS-V and now the ZL1. They all worked well.

Just a little.

JT

[KaBoom1701]

5 secs improvement ove the stock OEM Brembo set up...

Kinda find that hard to belive.

What makes these calipers/brake pads better over the OEM set up?

Not trying to bash this aftermarket kit. Just trying to understand the difference or improvement over the OEM Brembo's'.

Thx

[Team STILLEN]

Originally Posted by KaBoom1701

5 secs improvement ove the stock OEM Brembo set up...

Kinda find that hard to belive.

What makes these calipers/brake pads better over the OEM set up?

Not trying to bash this aftermarket kit. Just trying to understand the difference or improvement over the OEM Brembo's'.

Thx

Hey,

No worries man. I knew that posting the info that we will get questions.

The customer wasn't very confident with his OEM set up because of over heating. So after switching over to the AP Radi-CAL kit, he was able to get around the corners a lot sooner and braking later. Our customer told us he had a lot of brake fade. With the AP Kit he did not have any brake fade.

The OEM set up uses a Front 370x34 mm 2pc rotor and the rear uses a 365x28mm 1pc rotor.

Our AP Radi-CAL kit uses a 390x36mm 2pc rotor and the rear uses a 380x28mm 2pc rotor.

This gives you a bigger pad area against the rotor, better air flow and a trackable brake system for the street.

The biggest thing here when we designed the kit was managing the heat through a larger brake system.

JT

[KaBoom1701]

Originally Posted by Team STILLEN

Hey,

No worries man. I knew that posting the info that we will get questions.

The customer wasn't very confident with his OEM set up because of over heating. So after switching over to the AP Radi-CAL kit, he was able to get around the corners a lot sooner and braking later. Our customer told us he had a lot of brake fade. With the AP Kit he did not have any brake fade.

The OEM set up uses a Front 370x34 mm 2pc rotor and the rear uses a 365x28mm 1pc rotor.

Our AP Radi-CAL kit uses a 390x36mm 2pc rotor and the rear uses a 380x28mm 2pc rotor.

This gives you a bigger pad area against the rotor, better air flow and a trackable brake system for the street.

The biggest thing here when we designed the kit was managing the heat through a larger brake system.

JT

Ok, that makes for a better comparison.

Thx for the info.

[Team STILLEN]

Originally Posted by KaBoom1701

Ok, that makes for a better comparison.

Thx for the info.

No worries man!

JT

[Nickey31]

Great looking brakes kit. Was the test vehicle using OEM brake fluid and what brake fluid is used for your kit? I am sure you will agree that will account for some improvement in peddle feel and brake fade.

[Team STILLEN]

Originally Posted by Nickey31

Great looking brakes kit. Was the test vehicle using OEM brake fluid and what brake fluid is used for your kit? I am sure you will agree that will account for some improvement in peddle feel and brake fade.

The customer was using the AP Ultra 5.1 fluid.

The temperature did not get high enough where he needed to go with a higher boiling point fluid.

But we do have customers with track only cars running AP 600 and AP PRF660.

JT

[Team STILLEN]

I am able to offer a discount on our AP Radi-CAL kit if you are interested!

The discounted price will be good until May 14th!!

Front and rear kit details

10-14 Camaro APR77300 Front 6-Piston Calipers 390x36mm 2-Piece floating Rotors

10-14 Camaro APR77600 Rear 4-Piston Calipers 380x26mm 2-Piece floating Rotors

PM or Call me with any questions!

Thanks

JT

[ZL1Naboz]

PM Price please

Originally Posted by Team STILLEN

I am able to offer a discount on our AP Radi-CAL kit if you are interested!

The discounted price will be good until May 14th!!

Front and rear kit details

10-14 Camaro APR77300 Front 6-Piston Calipers 390x36mm 2-Piece floating Rotors

10-14 Camaro APR77600 Rear 4-Piston Calipers 380x26mm 2-Piece floating Rotors

PM or Call me with any questions!

Thanks

JT