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I believe the 992 TTS has 420mm fronts - but 390mm rears (same as the GT3) - I seriously thought about changing the front rotors on my TTS to the GT3 410mm version as the rotors as SO much less expensive. There is NO retrofit kit for the TTS, and the rotors are like $8K each. For 10mm less diameter, I'll take the GT3 410mm version, that is totally amazing . . . and at $12K-ish for 4 rotors w/ pads and calipers, it's hard to beat.
This has probably already been address in the forum somewhere, but a quick google search showed an OEM adapter for the 997 - this look like exactly what would be needed.
Possibly, but if you want PCCBs for many reasons, the GT3 version is the best / most economic option.
Just a heads up the offsets on the 992 GT3 are quite a bit different than that of the Carreras and Turbos, and GT4s. The rotor mounts up to the hub as you are showing, but you can tell from the picture the offset will be way off when you mount the caliper up and the disc will not run down the centerline of the caliper. The adapter bracket you reference was used on 997 Turbo (350 to 380) and 991 Turbos with iron to go from 380 to 410mm pccb on those cars from the factory, whereas here you would be going from the 350mm size disc on the T up to 410mm that the 992 GT3 uses, so this won't work. You would still need another spacer in between, in addition to the offset issue.
Thanks for the info. This should be a very simple adapter to develop and machine - I don't have an application for this with my current projects, or I would do it, but anyone with basic CAD skills and a 3D printer should be able to knock this out in an afternoon. I would guess that this would be a popular mod due to the wide availability of GT3 brakes, and the attractive pricing on 992 GT3 PCCBs.
06-05-2024, 10:51 PM
