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Challenger SRT Hellcat
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Discussion Starter · #1 ·
Are the previous years brake pads the same size for 2021 with the slightly larger calipers?
 

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2021 widebody Redeye Pitch Black.
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1,294 Posts
Yes, same size pads. I think the composition of the material is different, but same basic pad.
 

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Challenger SRT Redeye
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186 Posts
I've run the same Powerstop pad on the '19 and the '21 RE. There seems to be no functional difference.
 

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2020 Challenger Hellcat Redeye Wide Body
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10,247 Posts
Seems odd. Bigger rotors without bigger pads? What are they gaining without changing to bigger pads? @Blickie
 

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45 Posts

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45 Posts
Powerstop’s website doesn’t offer front pads for 6 piston calipers.

Application:
2015
Dodge
Challenger
SRT 392, SRT Hellcat Models - Power Stop OEM Design 2-pc

Part Numbers:
16-1405
17-1405
Z23-1405
Z26-1405
PST-1405

The "1405" denotes the FMSI number which defines the shape and thickness of the OEM pad style. #1405 is used for both 15.4" & 15.7" 6-pot front Brembos, the 14.2" 4-pot Brembos use pad #1149, and all three use the same 13.8" 4-piston rears pad #1053.
 

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Premium Member
2021 widebody Redeye Pitch Black.
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1,294 Posts
Of course they do, just like mentioned above.
1405 front
1053 rear
They work like a charm.
 

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Challenger SRT 392
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7,311 Posts
They probably say they don't fit because they haven't yet personally verified it.


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Premium Member
2021 widebody Redeye Pitch Black.
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1,294 Posts
I think the pad material (not size) is different on 21's.
21's have more compacted dust 😳
 

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The Friction Materials Standards Institute pad number the caliper uses is the same since the 2015 Hellcat 6-pot Brembos - D1405. Several people across the forums and online have confirmed this and I already listed all the Powerstop part numbers - what's the confusion?

Yes, brake pad compounds change - that's what differentiates brake pad manufacturers and gives consumers options. Hell, the compound could be a solidified peanut butter but formed to a backing plate in accordance to D1405 standards - not saying that it'll work well but it will fit like factory pads.

Now, 2021 did start the federal environmental mandate of restricting copper in brake pads to 5% or less, which will go down to 0.5% or less in 2025. Still plenty of pads being made and available.
 

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‘21 SRT SUPER STOCK
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1,391 Posts
They probably say they don't fit because they haven't yet personally verified it.


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Yeah just like doctors say you may or may not die but just sign here
 
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