[04DetroitLS]

2022 LT1 non-1LE J55

rotors are 12.6"


Does have Red Brembo fronts (J6F) which Rockauto lists these as a replacement for SS as well????
https://www.rockauto.com/en/catalog/...b,caliper,1704

[arpad_m]

Originally Posted by 04DetroitLS

I scanned the door code, but there's some codes I could find what they are, and IDK if its a complete list because it ends in ,,,, lol

The door jamb sticker with the QR code only has a partial list. GM used to include the full option code list on an RPO sticker in the trunk, but they "optimized it out" in 2019. This is mine, see how many more codes it has vs the door jamb info.

I don't know how one can obtain the full list these days. GM customer service used to email the build sheet with all the options and their descriptions in email, but they cut that service out as well...

[Bumbleboy92]

Originally Posted by 04DetroitLS

I scanned the door code, but there's some codes I could find what they are, and IDK if its a complete list because it ends in ,,,, lol

From that and cross referencing this thread: J55 - Brakes, Brembo 4-piston front, performance, 4-wheel antilock, 4-wheel disc

I believe J6F simply means red painted calipers from searching a few links and the forums

Originally Posted by Whitespeed

J6F is a GM code for the red Brembo calipers, not a Brembo part number. So you won't find anything on the Brembo website.

Nigel

I wouldn’t use J6F but I can’t 100% give you a straight answer unfortunately. I’d just bank on using the J55 solely and nothing else to search for pads if it was me

[04DetroitLS]

Originally Posted by Bumbleboy92

From that and cross referencing this thread: J55 - Brakes, Brembo 4-piston front, performance, 4-wheel antilock, 4-wheel disc

I believe J6F simply means red painted calipers from searching a few links and the forums



I wouldn’t use J6F but I can’t 100% give you a straight answer unfortunately. I’d just bank on using the J55 solely and nothing else to search for pads if it was me

I wasnt sure if J6F was only the color RPO or if it was specific to the size of the caliper...

[Bumbleboy92]

Originally Posted by 04DetroitLS

I wasnt sure if J6F was only the color RPO or if it was specific to the size of the caliper...

Yeah it should just be the color RPO. To my knowledge the only differing RPO for size calipers/rotors are the ones listed in my chart

[Sillysspeed]

Bumbleboy92. Would it be safe to say that the lt1 with 12.6” rotor and the c8 corvette base with 12.6 rotor are interchangeable? If so I’m guessing the 13.6” that is on the newer lt1’s without copper pads would be interchangeable with c8 z51 front rotors