SpeedLogic Demon Rotors vs OEM
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You'll have to let us know how they perform.
A Rotor with more Mass (larger heat sponge) is designed/can absorb more Brake Heat before Brake Fade occurs.
Let us know...
Best!
Lots of great reviews of the demon performance rotors on the forums.
For street use I have no complaints. Many have tracked with them and said they're great.
FYI speedlogix will price match or beat competitors--so sometimes pays to shop around.
The only thing I have in my notes is to not use Porterfield RS-4 pads with the girodisc rotors on the track--one person reported getting red flagged because they were shooting flames.
For street use I have no complaints. Many have tracked with them and said they're great.
FYI speedlogix will price match or beat competitors--so sometimes pays to shop around.
The only thing I have in my notes is to not use Porterfield RS-4 pads with the girodisc rotors on the track--one person reported getting red flagged because they were shooting flames.
Understand, but with no Brake Dyno Data, one should lean towards Rotor Mass. That's why Dodge made the '21, '22 Rotors slightly larger... a brake enhancement.
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I installed a set a year ago, no track time, they are light too, before you put your tire on spin the rotor and you can feel the air move near the fins.
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They for sure have half the mean an OE rotor has. How to prove it is just as safe?
There's people on here that have logged plenty of track time with them. There are other vehicles that use girodisc rotors also--lots of good reviews.
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Funny thing that you mention Girodisc, notice the box my rotors came from
The Demon rotors are made by Girodisc. They even have Girodisc on the box when you receive them.
So is there any truth that the '21-up cars got bigger brake pads too due to the removal of copper to meet CA specs? I assumed that's why the rotors had to be slightly larger too....they needed more surface area to stop the car like the old pads did....
- At least that's what I've read on these forums...
Love the Demon rotors! Enjoy 
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Has anyone put them on a scale and if so, what is the weight difference?
Also, can you reuse your factory hats or do you have to get these per-assembled? I saw on the website they have replacement rings but didn't see anything that said they don't fit the factory hats.
Also, can you reuse your factory hats or do you have to get these per-assembled? I saw on the website they have replacement rings but didn't see anything that said they don't fit the factory hats.
Front brembo rotors weigh 31lbs each.
Front DP/girodisc rotors weigh 24.4lbs each.
The DP girodisc hats are not the same as the stock brembo hats--thus they use different rings.
Allegedly it's possible to buy a girodisc ring that does fit the stock hat, but I've not found the listing for them.
Several of the places that sell the DP rotors also sell just the rings.
Front DP/girodisc rotors weigh 24.4lbs each.
The DP girodisc hats are not the same as the stock brembo hats--thus they use different rings.
Allegedly it's possible to buy a girodisc ring that does fit the stock hat, but I've not found the listing for them.
Several of the places that sell the DP rotors also sell just the rings.
The front rotors are 24.4 lbs vs. 31 lbs for the stock HC 2 piece units.
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Damn, that's pretty significant. I don't drag race but for those that do that would make a difference in time slips even. I believe it's something like 10 pounds of rotating mass removed equals close to 100 pounds of weight. Just those two rotors would be like dropping almost 200 pounds off the car. That should be in the description. Not huge for a pig like our cars but in chasing that time slip it would make a difference.
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