4 Piston Big Brake Upgrade from 2019-20

[blueinkd]

Can anyone here confirm these rotors are 13.5" OD when measured across the back ?

I have a set of rotors here that were removed from a 2019 Tahoe WITHOUT 4 piston calipers. They sure do look mighty close to the 21+ rotors. Wondering if its just a .5" difference overall or what it actually is.

Thanks!

Disregard my previous post. It's been over 12 months now I was gathering data and was between the 07 brake swap when I came across this one. May have my rotor info crossed..

 

[Colby_e32]

The brake rotors are the same part numbers from 07-2020 tahoes and the 4 piston trucks. Last time I checked this was the case.

So the NNBS 13” rotor is used not a special 13.5” rotor?

Thanks

 

[blueinkd]

So the NNBS 13” rotor is used not a special 13.5” rotor?

Thanks

Disregard my posts. Been a while and I may have my info crossed.

 

[Colby_e32]

No problem.

I’m almost certain there are some minor charges to the rotor. Like I said I have some oem 2019 brakes. 2 sets actually. 13” rotor. Then months later I see this upgrade, according to everything online they are 13.50 rotors.

Just wanting to see if someone can confirm they are 13 or 13.5” on the 4 pistons.

Thanks

 

[91RS]

The 2019 SUV brakes are the same brakes as the NNBS after 2008 w/ the spreading fingers.

 

[01subCT]

The 2019 an newer brakes with the 4 piston caliper are a 13.5 rotor..I believe that there is also a 2 piston caliper and 13 inch rotor in the same years..lots of confusion.but 4 piston will need the 13.5 rotor for sure

 

[91RS]

The confusion is because people mention a year but don't specify what model. The pickup trucks changed to the T1 body style in 2019 but the SUV's didn't change to the T1 body style until 2021. So 2019 and 2020 brakes from an SUV are the same as they've been since 2008. And to clarify further, I say 2008 because the 2007 and early 2008 front brakes were without spreading fingers but in the 2008 model year were changed to with spreading fingers which stayed the same until the T1 body style. The caliper itself is the same but the bracket is slightly different with and without spreading fingers.

 

[Fjs0001]

Inside of the wheels…? You have pics..? I don’t understand.

These wheels were flaking on the inside part of the wheel. I painted them with the caliper paint to make them look better and hopefully slow down the flaking.

.

 

[Sam Harris]

These wheels were flaking on the inside part of the wheel. I painted them with the caliper paint to make them look better and hopefully slow down the flaking.

View attachment 354768.

Hope you had them balanced again afterwards..!

 

[Denalibro76]

Anyone having an issue finding the left calliper on the front? I can get the right one all day long but can’t get the left one. Summit doesn’t have any. Anyone have a better place to check?