OEM brake discs

[CptSumTingWong]

Trying to find OEM front brake discs and it looks like the 15-18 cars use part number FR3Z1125E/F which are the drilled rotors. Then the 19/20 cars use KR3Z1125E/F which are the solid rotors.

The drilled rotors I can find for around $170/ea. But the solid rotors I'm having trouble finding for under $400/ea.

I would prefer the solid rotors as it's the "correct" part for my 20 car, and they won't crack like the drilled rotors. However I don't know if it's worth the extra money as I can replace with drilled rotors twice and still come out ahead.

Aren't the rotors identical except ones drilled (which takes more work to manufacture and you would think it'd be more expensive)? Would I be able to use the drilled rotors on my 20 car?

Edit: I might be wrong about the part number for the solid rotors. That might be the part number for the gt500 rotors? Does anybody know the correct part number for solid gt350 rotors?

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[galaxy]

All the same. Totally interchangeable. Just ensure you have the L and R. And how many of these do you know about that are cracked?

 

[svttim]

All the same. Totally interchangeable. Just ensure you have the L and R. And how many of these do you know about that are cracked?

Numerous.

 

[ZX3ST]

Trying to find OEM front brake discs and it looks like the 15-18 cars use part number FR3Z1125E/F which are the drilled rotors. Then the 19/20 cars use KR3Z1125E/F which are the solid rotors.

The drilled rotors I can find for around $170/ea. But the solid rotors I'm having trouble finding for under $400/ea.

I would prefer the solid rotors as it's the "correct" part for my 20 car, and they won't crack like the drilled rotors. However I don't know if it's worth the extra money as I can replace with drilled rotors twice and still come out ahead.

Aren't the rotors identical except ones drilled (which takes more work to manufacture and you would think it'd be more expensive)? Would I be able to use the drilled rotors on my 20 car?

Edit: I might be wrong about the part number for the solid rotors. That might be the part number for the gt500 rotors? Does anybody know the correct part number for solid gt350 rotors?

As far as I can tell the rotors are identical except for the friction rings. Same construction, both made by SHW.

LF Solid KR3Z-1125-C
RF Solid KR3Z-1125-D
Rear Solid KR3Z-2C026-B

LF Drilled FR3Z-1125-F
RF Drilled FR3Z-1125-E
Rear Drilled FR3Z-2C026-C

The solid rotors will still crack, it'll just take a bit longer. I'd hazard a guess that you might get around 25% more life from the solid rotors. And maybe a little bit more life from your pads, depending on what you're running.

From a purely cost-performance standpoint, in this case, I'd go drilled all day long.

 

[Epiphany]

As far as I can tell the rotors are identical except for the friction rings. Same construction, both made by SHW.

LF Solid KR3Z-1125-C
RF Solid KR3Z-1125-D
Rear Solid KR3Z-2C026-B

LF Drilled FR3Z-1125-F
RF Drilled FR3Z-1125-E
Rear Drilled FR3Z-2C026-C

The solid rotors will still crack, it'll just take a bit longer. I'd hazard a guess that you might get around 25% more life from the solid rotors. And maybe a little bit more life from your pads, depending on what you're running.

From a purely cost-performance standpoint, in this case, I'd go drilled all day long.

Good post.

 

[svttim]

As far as I can tell the rotors are identical except for the friction rings. Same construction, both made by SHW.

LF Solid KR3Z-1125-C
RF Solid KR3Z-1125-D
Rear Solid KR3Z-2C026-B

LF Drilled FR3Z-1125-F
RF Drilled FR3Z-1125-E
Rear Drilled FR3Z-2C026-C

The solid rotors will still crack, it'll just take a bit longer. I'd hazard a guess that you might get around 25% more life from the solid rotors. And maybe a little bit more life from your pads, depending on what you're running.

From a purely cost-performance standpoint, in this case, I'd go drilled all day long.

Great information

All rotors will experience hairline cracks. The problem with most drilled rotors is there in no camphor on the back side of the hole which makes them more prone to cracking to the outer edge (failure) When they fail, the results are spectacular, not in a good way. Pad life is also decreased. Most drilled rotors you see on competition cars are very expensive. The original intent was for cooling which has also been found not to improve. Yes, lots of drilled rotors survive on track just fine. Some dont. Its always the owners choice

 

[lunatect]

Drilled rotors are not used for racing. Use slotted or solid rotors. Drilled rotors are bling and nothing more.

 

[TommyBoyDIY]

Just picked up all four for my '16 from local Ford dealer. The rears are what killed me, $388 each. Ouch

 

[lunatect]

Just picked up all four for my '16 from local Ford dealer. The rears are what killed me, $388 each. Ouch

Solid rotors?

 

[TommyBoyDIY]

No, I really wanted the drilled rotors as stock. Just love the look with the drilled rotors.

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