Installing ATS Brembos on the Cobra.

A poster earlier in the thread claimed their Cosmis XT206R's needed a 5mm spacer. I have no idea if they share similar dimensions behind the spokes as the 005r

I've been debating the XT005R myself, but I really hate the idea of using any spacers at all. I'm going to be using 98 Cobra wheels for now. I did my first mock up last week

So I’m finally putting my brembos on my fox. I ordered the Baer Remaster 1 1/8” MC and have added the hydroboost.


Anyway, I decided to try out a ‘11-14 GT non-brembo rotor to see how it fit.

The rotor mounts up perfectly. Hub hole is the right size. No slop at all.



diameter-wise, the fit is perfect. The rotor is about 1mm beyond the edge of the pad. Plenty of clearance in the caliper. Could even run a larger rotor and clear. This rotor us 13.2” in OD


Offset-wise it’s way off. I thought someone mentioned it needed a 0.100” spacer to center up. My calipers are machined 0.075” (so no spacer needed with cobra rotors) but I needed to use a spacer in addition to center the rotor. It was still offset, so I needed a thicker spacer in addition to the machining I had done.

Left side is in towards the car



right side is wheel side.

probsbly need another 0.025” to center it. In this condition, the rotor drags.

My spacer is 0.075” thick. I machined 0.075” off . So equivalent is a 0.150” spacer. I think 0.175” would do it.

gonna return the rotor, and maybe I’ll make a spacer at some point and test it again

Mustang5L5 said:

So I’m finally putting my brembos on my fox. I ordered the Baer Remaster 1 1/8” MC and have added the hydroboost.


Anyway, I decided to try out a ‘11-14 GT non-brembo rotor to see how it fit.

The rotor mounts up perfectly. Hub hole is the right size. No slop at all.

View attachment 1674187 View attachment 1674188

diameter-wise, the fit is perfect. The rotor is about 1mm beyond the edge of the pad. Plenty of clearance in the caliper. Could even run a larger rotor and clear. This rotor us 13.2” in OD


Offset-wise it’s way off. I thought someone mentioned it needed a 0.100” spacer to center up. My calipers are machined 0.075” (so no spacer needed with cobra rotors) but I needed to use a spacer in addition to center the rotor. It was still offset, so I needed a thicker spacer in addition to the machining I had done.

Left side is in towards the car

View attachment 1674189

right side is wheel side. View attachment 1674190

probsbly need another 0.025” to center it. In this condition, the rotor drags.

My spacer is 0.075” thick. I machined 0.075” off . So equivalent is a 0.150” spacer. I think 0.175” would do it.

gonna return the rotor, and maybe I’ll make a spacer at some point and test it again

Click to expand...

That’s good stuff thank you for testing that!

Now back on a PC, so I can type up a few more thoughts.

The '11GT rotor was a physically larger rotor than the cobra 13" rotor. It measured 13.2 x 1.2" compared to the 13.0 x 1.1" of the cobra rotor. Not a huge increase, but the rotor did feel a bit chunkier. May not be a bad thing when combined with the Brembo caliper.

The fit on the pads was spot on. Hard to get a sense of depth of the above photo, but the pad stopped and there was a tiny sliver of rotor that would remain uncontacted. On the ID, the pad stopped well within the rotor swept face as well. I'd say the pad contacted 99% of the available surface. Tight, but perfect.

I know I said I was going to return the rotor, but i'll hang onto it for now. I have some time. I need to laser cut up a spacer and do a final test fit just to see what it takes to mount these perfectly.

Whether or not i'll run this is a different story. My estimated spacer size would be a 0.175" spacer. That's 4.5mm of added offset to account for in wheel selection. With my fox, every mm counts. I did machine the calipers 0.075", so really, i'd be using a .100" (2.5mm) spacer under the rotor.

My '98 Cobra wheels do clear these calipers, but if I went an aftermarket wheel, I might need another spacer on top of that.

I ended up buying some parts to continue to try and figure out if these rotors will clear. It appears 3mm and 5mm spacers are readily available on the market. No need to custom make anything. I believe a 5mm (0.197") spacer will get the job done.

I have some measurements that I've taken so once I have them fitted up i'll post some data. The OD of the rotor, added thickness/mass of the rotor and relationship of the pads to where they sit on the rotor face all all pros. The additional offset is a con.

Without any spacers, the '14 GT rotor adds 0.050" (1.2mm) of offset over the standard cobra rotor. Then add the spacer width on top of that. Then, depending on what wheels you are running, you might need another spacer to clear the caliper to spokes

I'll update sometime later this week

Well, off-the-shelf spacers are a bust. The SN95 hub has a step, usually where the rotor sits. Most SN95 spacers are 70.5mm, but the step opens up to around 71.5-72mm, and then you have a radius so a chamfer is required. I can’t really find an off the shelf spacer that fits this, unless you get one of those sketchy universal bolt pattern types with a larger hub.

im fairly confident a 5mm spacer will allow you to run this rotor, or machining 5mm off the mounting face of the caliper.

the rotor also adds 0.050” of width each side, olus the 5mm spacer, plus any additional spacer you add to ckear the spokes of your wheel.

might be better to stick with the cobra 13” rotor and just shave off 1mm of pad up top

i have the means to make my own spacers, but that really doesn’t help anyone else here.

i may abandon this and stick with the cobra rotors.

I did end up getting the Baer Remaster MC.

FYI,

I test fit a set of Cosmis XT-005R's with the ATS Brembos. No dice. I stacked a 5mm and 3mm spacer on top of each other and the spokes were still barely hitting. I can post pics if anyone wants to see what it would look like

I knew I would be running these wheels on my Foxbody so concern about too much poke on the front was in the back of my mind. It's why I chose to machine my calipers vs run the spacer under the rotor. Anyway, that's just too much spacers for me to comfortably use and fit in my fenders, so made the decision to abandon the ATS Brembo setup. I'm going to stick with my Baer/C6 front caliper setup instead. A little disappointed, but I wanted the wheels more than the brakes.

I did test fit the template for the Baer T4 brake kit and it does appear to clear without any spacers. I may explore this down the road.

Undecided if i'll sell off the Brembos just yet. Considering I've modified them by machining and adding the inserts, no sure I want the liability of selling them to someone for a couple hundred bucks. Might just use them as paperweights.

Mustang5L5 said:

FYI,

I test fit a set of Cosmis XT-005R's with the ATS Brembos. No dice. I stacked a 5mm and 3mm spacer on top of each other and the spokes were still barely hitting. I can post pics if anyone wants to see what it would look like

I knew I would be running these wheels on my Foxbody so concern about too much poke on the front was in the back of my mind. It's why I chose to machine my calipers vs run the spacer under the rotor. Anyway, that's just too much spacers for me to comfortably use and fit in my fenders, so made the decision to abandon the ATS Brembo setup. I'm going to stick with my Baer/C6 front caliper setup instead. A little disappointed, but I wanted the wheels more than the brakes.

I did test fit the template for the Baer T4 brake kit and it does appear to clear without any spacers. I may explore this down the road.

Undecided if i'll sell off the Brembos just yet. Considering I've modified them by machining and adding the inserts, no sure I want the liability of selling them to someone for a couple hundred bucks. Might just use them as paperweights.

Click to expand...

I appreciate your efforts on the above and beyond research you’ve done, it’s certainly helped me answer some questions that customers have had with my insert kit!

I definitely wouldn’t want to see the ears of these calipers with 5mm machined off them lol.

5mm would definitely be too much to machine off and actually expect to use the brakes for their intended purpose.


I do know of a few guys who machined 3mm off and are running the setup with the 11-14 GT 13.2 rotor. That’s not that much more than the 0.075” but it was getting to a point where I wasn’t comfortable with taking that much more off.


Anyway, it was a good project, and fun.


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Mustang5L5 said:

FYI,

I test fit a set of Cosmis XT-005R's with the ATS Brembos. No dice. I stacked a 5mm and 3mm spacer on top of each other and the spokes were still barely hitting. I can post pics if anyone wants to see what it would look like

I knew I would be running these wheels on my Foxbody so concern about too much poke on the front was in the back of my mind. It's why I chose to machine my calipers vs run the spacer under the rotor. Anyway, that's just too much spacers for me to comfortably use and fit in my fenders, so made the decision to abandon the ATS Brembo setup. I'm going to stick with my Baer/C6 front caliper setup instead. A little disappointed, but I wanted the wheels more than the brakes.

I did test fit the template for the Baer T4 brake kit and it does appear to clear without any spacers. I may explore this down the road.

Undecided if i'll sell off the Brembos just yet. Considering I've modified them by machining and adding the inserts, no sure I want the liability of selling them to someone for a couple hundred bucks. Might just use them as paperweights.

Click to expand...

Sucks to hear they won't fit the XT-005r's. Was really wanting to buy a set.

I may be interested in calipers. Wife mentioned she wanted a set for her cobra that will mainly see street time. Not wanting to shim the rotors on her car either. Shoot me a message if youre willing. I understand if you don't with your concerns.

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Mustang5L5 said:

FYI,

I test fit a set of Cosmis XT-005R's with the ATS Brembos. No dice. I stacked a 5mm and 3mm spacer on top of each other and the spokes were still barely hitting. I can post pics if anyone wants to see what it would look like

I knew I would be running these wheels on my Foxbody so concern about too much poke on the front was in the back of my mind. It's why I chose to machine my calipers vs run the spacer under the rotor. Anyway, that's just too much spacers for me to comfortably use and fit in my fenders, so made the decision to abandon the ATS Brembo setup. I'm going to stick with my Baer/C6 front caliper setup instead. A little disappointed, but I wanted the wheels more than the brakes.

I did test fit the template for the Baer T4 brake kit and it does appear to clear without any spacers. I may explore this down the road.

Undecided if i'll sell off the Brembos just yet. Considering I've modified them by machining and adding the inserts, no sure I want the liability of selling them to someone for a couple hundred bucks. Might just use them as paperweights.

Click to expand...

The brembos weren’t cut/machined in the back of the caliber correct? I would be definitely interested in seeing pictures.


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I did machine 0.075” off the caliper. I wanted to run them without spacers under the rotor. Trying to upload pics but the mobile platform doesn’t like my pics. Might have to do it on desktop





Btw, I know we were concerned with pad overhang, but looks like the Baer calipers have the same issue.

https://www.svtperformance.com/threads/baer-6p-front-fitment-issues-17-wheels.1179109/


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Let’s try this.

I’ve got about 8mm of spacer under the rim to clear the caliper

Do I think this ugrade would clear ccw d110 18 inch wheels?

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CobraLucci said:

Do I think this ugrade would clear ccw d110 18 inch wheels?View attachment 1686050

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Click to expand...

Oh man those are beautiful.

CobraLucci said:

Do I think this ugrade would clear ccw d110 18 inch wheels?View attachment 1686050

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Click to expand...

I doubt they will clear without a spacer. Seems like the only wheels that do clear have spokes that curve out away from the hub.


Would be nice to put a template together for wheel clearance like Baer does for their calipers.

I’ll see what I can do, but no promises.


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I wish we had a list of wheels that clear the Brembos besides stock 17" 03-04 Cobra.

I think 98 Cobra and FR500s fit 17" or 18" too?

Saleen reps?

I want to get some wheels to change up my look, but am not sure what fits. Really looking for something similar to BBS RKs. Something 10/12 spoke.

Off the shelf:
Aodhan, Whistler, Enkei, ESR, TSW, Circuit, Rovos, Weld, Cosmis

Custom:
Foose, CCW, Boze, BC Forged

Give me a bit and I will start a list and add to this thread.

KBR said:

I wish we had a list of wheels that clear the Brembos besides stock 17" 03-04 Cobra.

I think 98 Cobra and FR500s fit 17" or 18" too?

Saleen reps?

I want to get some wheels to change up my look, but am not sure what fits. Really looking for something similar to BBS RKs. Something 10/12 spoke.

Off the shelf:
Aodhan, Whistler, Enkei, ESR, TSW, Circuit, Rovos, Weld, Cosmis

Custom:
Foose, CCW, Boze, BC Forged

Click to expand...

98 Cobras do clear, by a mile. Tons of clearance to the spoke with those, tight to the barrel. They are a ideal rim to keep as a full size spare if needed because they tend to clear 13" BBK's very well. The other Ford 17x8's do not. (not without spacers at least)

I've tested:
01-04 bullitt: nope
99/01 Cobra :nada
94-97 Cobra : fuggedaboudit

I've seen that the Ford 17x9's do clear. 03 Cobras and FR500's seem to clear. I assume real Ford 95 cobra R's do as well but haven't seen any confirmation.

Cosmis XR005R: Nope, not without roughly 5-8mm of spacers (8mm will clear but I think 5mm is the min)


Keep in mind, those 17" wheels are very tight to the barrel of the wheel. Wheel weights will need to be carefully positioned, or stuck into the outer rim instead. My inserts I tested with relocate the caliper down 3mm as well. I believe the S&S insets are the same offset. Without that, the caliper won't clear the barrel of the rim.


I'm still going to attempt a template. I'm just wrapped up in work I actually get paid for at the moment.

So I used low rangers kit and the ccw did not rub on anything. So add this to the list of wheels. It's an 18

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