Wilwood Holden HQ HJ HZ WB 12.19″ (310mm) Rotor, 4 Piston Dust Boot Caliper Front Disc Big Brake Kit (Hub)

Calipers
Left Hand – Part No:	120-11482
Right Hand – Part No:	120-11482
Type:	Dynapro Dust-Boot
Finish Color:	Black Powder Coat
Piston Count:	4
Piston 1 Bore (in):	1.75
Piston 2 Bore (in):	1.75
Piston Area (In²):	4.80
Piston Type:	Aluminum
Mount Type:	Lug
Brake Pad Plate:	7812
Brake Pad Area (In²):	6.36
Brake Pad Volume (In³):	2.1
Pad Compound:	BP-10

Rotors
Left Hand – Part No:	160-7104-BK
Right Hand – Part No:	160-7103-BK
Type:	SRP Drilled Rotor
Style:	SRP Drilled & Slotted
Surface Finish:	Black Electro Coat
Material:	Iron
Outside Diameter (in):	12.19
Width (in):	0.81
Vane Count:	32 V
Design Type:	SRP-BLK
Bedded:	No
Dynamically Balanced:	No

Hubs
Hub – Part No:	270-7274
Type:	Hub – Vented Rotor Offset
Material:	Aluminum
Finish Color:	Bare
Mount Style:	Adapter
Bolt Circle 1:	5 x 4.50
Bolt Circle 2:	5 x 4.75
Bolt Circle 3:
Stud Diameter – BC 1:	1/2-20
Stud Diameter – BC 2:	1/2-20
Stud Diameter – BC 3:

Dynapro Dust-Boot Big Brake Front Brake Kit (Hub) Assembly Schematic

*NOTE: Some applications for this kit have the steering arm to the rear of the spindle and others to the front. Also, some applications have room to mount the bracket and caliper on the steering arm side of the spindle while the steering arm may interfere in other applications. The brackets in this kit may be mounted on either the front or rear side of the spindle. If mounting to the front of the spindle, the right hand bracket will be used on the left hand side of the vehicle and vice versa. This drawing shows a typical 1967-1969 Camaro left side application where the steering arm is to the rear and there is room to mount the caliper on the steering arm side as shown. Determine which way the bracket and caliper will fit best on your application