A Brembo GT big brake system built for the GMC 1500 Sierra (GMT K2xx) (with Aluminum Knuckles), 2014 to 2018, rear axle. The discs are 380x32mm 2-piece.
GT|A calipers are the two piece design derived from Brembo’s original equipment applications. They are the most straightforward of the GT calipers to install and suit road cars that see occasional track use.
Four piston caliper, used on front and rear axles depending on the application.
Disc face: available cross-drilled or Type 3 slotted. Type 3 slots are the pattern Brembo uses in professional motorsport. They give a strong initial bite and keep the pad face clean as it beds in.
Caliper finish: Black, Red or Silver. The finish is set by the last digit of the part number, so tell us which one you want with the order.
Fitment notes from Brembo: Brembo GT Systems are designed for vehicles at original ride height. Increased ride height is not compatible with the brake lines included in these systems.
What is in the kit: 4 piston aluminium calipers, 380mm 2-piece discs with bells, Brembo pads, caliper mounting brackets, braided brake lines and the fitting hardware. Contents vary slightly by application, so check the part number against the list below.
Part numbers
| Disc face | Base part | Full part number by finish |
|---|---|---|
| Cross-drilled | 2H19003A | 2H19003A1, 2H19003A2, 2H19003A3 |
| Slotted Type 3 | 2H39003A | 2H39003A1, 2H39003A2, 2H39003A3 |
The last character sets the caliper finish or the line. 1 is black, 2 red, 3 silver, 4 gold, 5 yellow, 6 white, 7 fluorescent yellow. S is a GT-S caliper and R is a GT-R caliper.
Wheel clearance is the thing to check first. A 380mm disc with this caliper needs a specific wheel offset and spoke shape, and the requirement for a GT-R caliper is different from the GT version. Send us your wheel size, offset and make and we will read the clearance drawing against it before anything is ordered.
Downloads
- Caliper clearance drawing for 2H19003A, with the A, B and C dimensions (PDF)
- How to measure brake clearance against your wheels (PDF)
- Brembo GT fitting instructions (PDF)
Brake work is safety critical. Brembo asks that these systems are installed by a qualified technician, and the kit must be checked, bled and road tested to the instructions supplied with it before the car is driven.
