Information:

High quality chassis part series products.

Made with high strength steel tubing for superior strength and durability.

Stable performance, reliable quality and long service life

Uniform thickness, no blow holes, slag, cracks, tearing, or incomplete fusion.

Measured by specialized inspection tools after welding to make sure assemble hole , bushings insert, and installation sizes are proper.

Professional Installer is Highly Recommended (No Instruction Included)

Alignment Highly Recommended After Install

Type: Disc Brake Kits
Item Height: 11.250
Item Length: 3.15
Placement on Vehicle: Rear
Bolt Pattern: 5 on 4.5" | 4.75"
Axle Flange Offset: 2.36" - 2.50"

Part Number: 91031902

Notes: Works new and old style big bearing for Ford 9" using 3/8" retaining bolts.

Compatibility Chart:

For Ford 9 Inch Housings
note: This disc brake kit fits Ford 9 inch axles, as well as passenger car for Ford 9 inch axle housings with “big bearing” ends (3.150” O.D. bearing, found on passenger cars from 1974-79). Included bracketry will adapt this kit to both “new style” and “old style” for Ford 9 inch housing flanges with the 3/8” bearing retainer bolt holes. Bracket spacers are also included, allowing this kit to work with axle flange offsets of 2-3/8” or 2-1/2” common on for Ford 9 inch passenger car rear ends. Axle flange offset is measured from the axle housing flange face (with bearing retainer removed) to the axle shaft flange face (side where the brake rotor/drum rides, including the thickness of the axle flange).

Installation Tips
1.For passenger car axles only, 15” and larger wheels only
2.Fits 9 inch housing axle offsets of 2-3/8” to 2-1/2” (measured from outside of housing flange to outside of axle flange, not measured out to axle register but only surface where the rotor sits against). Requires “big bearing” housing ends (for a 3.150” O.D. bearing) with 3/8” bearing retainer bolt holes.
3.Brake rotor has a 2.78” center hole and works with axle shaft flanges no larger than 6-1/4” diameter. If your axle shaft flange exceeds that diameter, you will need machine the flange to decrease the diameter.
4. This kit is an aftermarket solution. It is not intended to be a direct installation or replacement. Due to changes in production in certain years, your application may require modifications beyond these instructions for this kit to install properly.

Package Content:

Disc brake stopping power at nearly the same cost as rebuilding/replacing drum brakes
11-1/4” diameter, 1” thick vented cast iron rotors dissipate heat faster than drum brakes
Serviceable design ensures good drivability and piece-of-mind when on the road
Street-friendly for GM D154 style pads, replacements available nearly everywhere
GM “Metric” style single piston calipers with 7/16”-20 banjo-style inlets
Fits Ford “big bearing” 9 inch housings from passenger cars
Use with Ford 9 inch rear ends with 2-3/8” or 2-1/2” axle flange-to-housing offsets
Dual wheel bolt patterns covering all for GM/Ford/Mopar (5x4.5” for 1/2” studs, 5x4.75” for 7/16” studs)
Use with 15” or larger disc brake-style wheels
Easy bolt-on installation w/ included instruction sheet
Includes heavy steel mounting brackets, Grade 8 hardware and nylock nuts (everything you need)

W/o Product Instruction；

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