IRS Rear Hawk Pads

[smccoy]

I am planning to use Hawk HPS pads for both my front and rear brakes. I have the stock complete kit front brakes. I purchased a salvage IRS pallet said to be from a 2021 Mustang. They have 13" slotted rotors which seems to mean they are from an EcoBoost Performance Pack. Based on Hawk's reference data, it looks like I need the following pads for the car:

Front: HB274F.610
Rear: HB803F.639

Do these look like the right parts?

[CraigS]

I used to be able to find a reference chart at Hawkperformance.com listing pads and a diagram of their dimensions but I can't find it there now. This may help you confirm your #s by comparing them to the oe pads in the calipers.
https://www.pegasusautoracing.com/document.asp?DocID=TECH00057

[nuhale]

What is your front caliper? Is it the stock PBR one FFR supplies? If so that would be HB274F.610. I'm not sure on the rear but maybe HB580F.627?

I have the GT rears on mine with the older pre-2015 IRS which are HB183F.585.

[alexmak]

Front HB274F.610
Rear HB580F.627

[smccoy]

Thanks for the feedback! I have the stock PBR front calipers so will order HB274F.610 for the fronts. For the rear brakes (OEM EcoBoost Performance Pack), I pulled a set of pads tonight and measured the pad and then the diagrams to find a match. HB803F.639 matches the dimensions and Hawk shows that it fits 2015-2020 vehicles. It looks like they don;t have 2021 loaded into their cross-reference system at all for whatever reason... Now to order more parts...