Brake Pad Upgrade - IRS Stock FFR System

[cv2065]

Looks like my rear brake pads are on backorder until the middle of October, and even then it will be prioritized on a wait list, so no guarantees when I’ll receive them.

I’ve got lots to do and really no time to wait, so figured I’d just grab a set of rear pads. I’ve read that Hawk is the best, but what year Mustang am I looking for to get rear pads for the FFR stock IRS brake setup?

[cv2065]

Can anyone verify the rear brake pads that come with the complete kit and IRS setup? I think Stop Tech makes them. FFR stated that these are equivalent to brake pads from an 87-88 T bird, but in buying a pair of Wagner TQ’s, these aren’t the right pads.

[John4337]

Mine is the old IRS, and came with Wagner. I wasn’t happy, ended up with Hawks, which were a big improvement.

John

[cv2065]

Mine is the old IRS, and came with Wagner. I wasn’t happy, ended up with Hawks, which were a big improvement.

John

Thanks. Just trying to get a baseline now of which model number of pads are used, so I could go Hawk, Wagner etc

[John4337]

I learned there were several variations, thick or thin rotor, etc. Mike Forte got me set up

John

[CraigS]

Measure the pads you have and do an outline drawing and then look here starting on pg 28
http://www.hawkperformance.com/sites/default/files/downloads/2017_HAWK_COMPLETE_CATALOG_LOW_RES.pdf
Once you find it you can look at the various Hawk compounds it is available in. Also the FMSI number is a good cross reference to other brands that are the same size.

[MPTech]

This is what I'm running for ’92 Lincoln MK-VII disc brakes
Hawk HPS (High Performance Street) Brake Pads
• 580F.627.5618R 1991-1992 LINCOLN MARK VII LSC - 5.0L

[cv2065]

Thanks for the suggestions guys. I'll use it for future reference. I was able to get the brand and model of pads that are sent out with the complete kit. I'll start with those and see how they wear. I can always change down the road.

[BEAR-AvHistory]

You also want to check the rotor thickness to be sure the pads match.

[rich grsc]

You have the New Mustang IRS, not the same as the old Thunderbird/Lincoln brakes.

[FF33rod]

Thanks for the suggestions guys. I'll use it for future reference. I was able to get the brand and model of pads that are sent out with the complete kit. I'll start with those and see how they wear. I can always change down the road.

Perhaps you want to post that info for the benefit of everyone :)

[cv2065]

Perhaps you want to post that info for the benefit of everyone :)

Sorry...meant to do that! The stock IRS rear brake pads from FFR are from Stop Tech, model #309-0545. Even though the IRS is from a 2015 Mustang, the pads are for a '93 Mustang GT

[cv2065]

Hey all. Just received these rear brake pads and had a question. The 2015 IRS brakes instructions just say to install the brake pads as is in the caliper, but the pads came with the little metal clips. Can these pads be installed without the clips or are the instructions just missing that part? These clips are a bear to install as they don't stay put and I'm not sure what purpose they serve to keep the pads in there.

The front instructions were very explanatory and the clips just popped right in and held the pads. These not so much.

Thanks!

[rich grsc]

What clips? You mean the springs? Yes they must be used. You put the pads on the rotor in the bracket, the install the caliper on them. They do not fit into the caliper.

[cv2065]

What clips? You mean the springs? Yes they must be used. You put the pads on the rotor in the bracket, the install the caliper on them. They do not fit into the caliper.

Talking about these clips (pic below). These came with the pads, but I don't see them added in the FFR instructions. Also, should any kind of brake pad lubricant be added to avoid noise, or are they good as is?

94280

[cv2065]

Ok, so got these figured out. The 2015 IRS directions say to put this entire assembly together first, before you place on the rotor and don't mention the vibration clips which was making it a little confusing. As Rich pointed out, this is not correct as you need to have the lower half on the rotor first.

Pads fit in easily, as well as the clips, and then the caliper over the top. I suppose you could put it all together first, but the vibration clips are very hard to keep still while putting the pads in. You really need to have it on the rotor. The instructions also do not mention these clips, which I think will be necessary from a noise and fitment perspective, as the pads had about an 1/16" of play in them without the clips. You can see them through the little caliper window on each side.

942829428394284