Wilwood 120-10526 D8-4 Universal Lug Mount Rear Caliper 4 Pistons Red

D8-4 Caliper Rear

D8-4 rear calipers are a direct bolt-on replacement for the OE factory rear calipers on all 1965-82 Corvettes. Forged billet aluminum bodies, stainless steel pistons, and high temperature seals put an end to the rust, bore pitting, and seal failures that plague the original cast iron caliper design.

D8-4 calipers mount in the stock location over stock rotors and use the original type D8 brake pads. These calipers fit inside 1967 and later production steel rally wheels and most of the later model alloy wheels. Original steel “JK” code wheels from 1965-66, and some aftermarket alloy replica wheels, will requires a 3/16” or thicker wheel spacer for clearance.

D8-4 calipers use the same overall piston volumes as the original calipers. Other than a new flexline with an 1/8”-27 NPT end for the new aluminum caliper, no other changes such as master cylinder output or front to rear bias adjustment are necessary.

Pistons

Piston Count	4
Piston Area (in²)	3.00
Piston Type	Stainless
Dust Boot	No

Rotor Dimensions

Rotor Width (in)	1.25
Rotor Diameter(in)	11.75

Pad Dimensions

Pad Area (in²)	10.29
Pad Volume (in³)	3.4

Duty Rating & Material

Material	Forged Aluminium
Weight(Lbs)	6.3

Colors & Finish

Color	Red
Finish	Red Powder Coat

Mounting

Mount Center(in)	5.16
Mount Position
Mount Side	Universal
Mount Type	Lug

Specifications

Rotor Compatibility

Rotor Width (in)	1.25
Maximum Rotor Width (in)	1.25
Minimum Rotor Width (in)	1.17
Maximum Rotor Diameter(in)	11.75
Minimum Rotor Diameter(in)	11.75

Brake Pad Specifications

Brake Pad Type 1	D8
Brake Pad Type 2	N-A
Brake Pad Type 3	N-A
Total Pad Area (in²)	10.29
Total Pad Volume (in³)	3.4
Mount

Piston Specifications

Piston 1 Bore (in)	1.38
Piston 2 Bore (in)	1.38
Piston 3 Bore (in)
Total Piston Area (in²)	3.00

Mounting Specifications

Mount Type	Lug
Mount Side	Universal
Mount Center(in)	5.16
Mount Hole Size(in)	0.47
Mount Height(in)	2.99
Inlet Thread Size	1/8-27 NPT