BBBestparts
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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;
There is a discount waiting for you in the shopping cart

All domestic orders will be shipped via USPS or FedEx from our US warehouse and usually arrives to your door in about 3-5 business days.
We ship the package to your shipping address in eBay instead of the one in PayPal. Please tell us your shipping address if it is different from the one in eBay.
The tracking number will be given for the customer to check the shipping status online (registered or faster service only).
We are not responsible for any wrong or undeliverable addresses. Please verify and update your shipping address on eBay during checkout.
If you encounter any problems about anything, please feel free to contact us and we will do our best to assist you solve the issue. If you are not satisfied in anyway, please feel free to let us know and give us a second chance to correct it before you decide to leave any neutral or negative feedback.
Shop Category |
9 Inch Rear End Bolt-On Disc Brake Kit Old & New style Universal Kit For Ford
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 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
Installation Tips
Package Content: Disc brake stopping power at nearly the same cost as rebuilding/replacing drum brakes W/o Product Instruction;
There is a discount waiting for you in the shopping cart Payment
Shipping
Product will be shipped within 3 business days after full payment is received and verified. Delivery Time is about 3-7 business days to most of countries.
All domestic orders will be shipped via USPS or FedEx from our US warehouse and usually arrives to your door in about 3-5 business days. We ship the package to your shipping address in eBay instead of the one in PayPal. Please tell us your shipping address if it is different from the one in eBay. The tracking number will be given for the customer to check the shipping status online (registered or faster service only). We are not responsible for any wrong or undeliverable addresses. Please verify and update your shipping address on eBay during checkout. Returns
Please contact us first when return, exchange and refund is required.
Any direct return of purchased items will not be processed.
Change-of-mind return can only be accepted within 7 days after purchase.
All other returns can be accepted in 30 days.
We will closely examine the condition of the returned items and will not issue any refund/exchange before we make sure the items are in their original neat conditions.
Contact Us
Our office hours are every day except Sunday, but the processing time is uncertain, we will process your problem on the same day,
And our office is closed on Sunday and we apologize for the late reply during the holidays.
Feedback & Customer Services
If you encounter any problems about anything, please feel free to contact us and we will do our best to assist you solve the issue. If you are not satisfied in anyway, please feel free to let us know and give us a second chance to correct it before you decide to leave any neutral or negative feedback. All rights reserved. |
On May 22, 2026 at 17:45:42 PDT, seller added the following information:
