Paragon 400mm rotors

[TrackDay]

Has anyone tried these in an aggressive road course scenario? Since I need to replace my rotors for next year anyway I'm considering a move to the 21+ rotors and this looks like a reasonable option since I don't have a 21+ factory center hat.
https://paragonbrakes.com/2-piece-r...34mm-21-dodge-charger-challenger-srt-hellcat/

I have the ACR calipers so it's just a different spacer for them and I can use the larger rotors.

 

[rayzazoo]

Has anyone tried these in an aggressive road course scenario? Since I need to replace my rotors for next year anyway I'm considering a move to the 21+ rotors and this looks like a reasonable option since I don't have a 21+ factory center hat.
https://paragonbrakes.com/2-piece-r...34mm-21-dodge-charger-challenger-srt-hellcat/

I have the ACR calipers so it's just a different spacer for them and I can use the larger rotors.

I've run fronts for ~1 year. I swapped from the NOA Brembo P37018N to the non-NOA Brembo P37018 shortly after a few drives. The braking difference was noticeable since the NOA are ceramic based vs non-NOA semi-metallic. Unfortunately, I haven't had them on a road course or with track-focused pads.

From a weight perspective:

OEM Hat: 1.8lbs
OEM 390mm: 29.2 lbs (31 total)
390mm: 25.6 lbs (27.4 total)
400mm: 26.3 lbs (28.1 total)

A few pictures here
https://www.hellcatforum.org/threads/paragon-brake-rotor-rings-oem-hat.15704/#post-448564

There's also https://www.ceramicdisctech.com/ and still in development.

 

[TrackDay]

Thanks for the feedback.

 

[rayzazoo]

Thanks for the feedback.

You're welcome, and it would be great to see a track comparison of Paragon versus Demon Performance rotors.

You mentioned Viper ACR calipers. It's the same rotor/caliper size as the 2015-2020 Hellcats, but with the benefit of lighter/prolonged heat transfer titanium pistons (~2 lbs savings per front caliper).

The 2021+ cars have 400mm rotors and that's ~16lbs added in unsprung weight vs 2015-2020. Wesley Motorsports had a 2021 Charger Redeye and venture to say that is why the opt'd for the Viper ACR Caliper/rotors; 400mm to 390mm and piston benefit.

Material:
Demon Performance: proprietary cast iron
Paragon: CM-250 special formulated high carbon alloy cast iron

400mm rotors
OEM: 38.65 lbs (with OEM hat)

Demon Performance: 30.75 lbs (with DP aluminum hat)

Paragon: 29.7 lbs (with Paragon aluminum hat)

https://paragonbrakes.com/2-piece-r...34mm-21-dodge-charger-challenger-srt-hellcat/

390mm rotors
OEM: 31 lbs (with OEM hat)

Demon Performance: 25.39 lbs (with DP aluminum hat)
Demon Performance: ~24 lbs (rotor ring)

Paragon: 27.4 lbs (with OEM hat)
Paragon: 25.6 lbs (rotor ring)

360mm rotors (SuperStock/Demon)
OEM: 22.6 lbs

Demon Performance: 22.6 lbs

Brake Pads
Hawk DTC-70

• Type: Motorsport-grade race pad
• Material: High-performance race compound
• Friction Coefficient (μ): 0.80 ~ 0.90
• Operating Temperature Range: 400°F to 1,600°F (204°C to 871°C)
• Optimal Temperature Range: 800°F to 1,200°F (427°C to 649°C)
• Torque: Extremely high
• Initial Bite: Aggressive and controllable
• Modulation & Release: Superior
  
  

Paragon PBP690T6-15 R7

• Type: Advanced high-speed track/competition pad
• Material: Metallic
• Friction Coefficient (μ): 0.48 ~ 0.53
• Operating Temperature Range: 212°F to 1,562°F (100°C to 850°C)
• Recommended Use: Advanced high-speed track events, competitions, and heavier cars requiring maximum braking performance

Brembo P37018

• Material: Low-Metallic
• Friction Coefficient (μ): 0.35 ~ 0.45
• Operating Temperature Range: -40°F to 1,200°F (-40°C to 650°C)

https://www.hellcatforum.org/threads/demon-performance-rotors-for-road-courses.13473/page-2

 

[TrackDay]

Thanks. I'm not too concerned about weight of the rotors. My focus is at least getting a little more surface area and thus heat capacity in the rotors to help me avoid brake fade. At Road America I can fade the DTC70 in 2 hard laps. I have a set of DTC80 front pads that are still in the box, waiting for the next time I think I've changed the hardware enough to possibly move the needle.
I know 390 to 400mm is a small difference, but it's an easy experiment when I replace the rotors.

 

[BULL]

Thanks. I'm not too concerned about weight of the rotors. My focus is at least getting a little more surface area and thus heat capacity in the rotors to help me avoid brake fade. At Road America I can fade the DTC70 in 2 hard laps. I have a set of DTC80 front pads that are still in the box, waiting for the next time I think I've changed the hardware enough to possibly move the needle.
I know 390 to 400mm is a small difference, but it's an easy experiment when I replace the rotors.

Given your ability to move your calipers out to accommodate 400mm, I'd do it..

.25