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Bring Modern Six Piston Stopping Power To Your Classic Mustang
Factory drum and early disc brakes on a 1965-1969 Mustang were never designed for todays driving demands. The Wilwood 140-12947-D front hub kit replaces the original setup with forged Dynapro 6 billet calipers and 12.19in drilled and slotted rotors, giving your classic pony car the pedal feel and fade resistance of a modern brake system while keeping a period-correct look.
Key Features
- Forged Dynapro 6 billet calipers with 6 stainless steel pistons per caliper
- 12.19in diameter SRP drilled and slotted rotors in black electro coat finish
- Direct bolt-on fitment for factory disc or drum front spindles
- Dual 5 x 4.50in and 5 x 4.75in bolt pattern hubs for wheel compatibility
- Aluminum hub construction with a plus .09in hub offset
- Dynamically balanced rotors for smooth, vibration-free operation
- Fits most 15in diameter wheels and larger
Fitment Table
| Year Range | Make | Model |
|---|---|---|
| 1965-1969 | Ford | Mustang |
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | 140-12947-D |
| Brand | Wilwood |
| Caliper Type | Dynapro 6, Black Powder Coat |
| Piston Count | 6 per caliper, Stainless |
| Piston Bore Sizes | 1.62in, 1.38in, 1.38in |
| Rotor Diameter | 12.19in |
| Rotor Style | SRP Drilled and Slotted, Black Electro Coat |
| Rotor Width | 1.10in |
| Bolt Pattern | 5 x 4.50in and 5 x 4.75in |
| Hub Material | Aluminum |
| Minimum Wheel Diameter | 15in |
| UPC | 889545018356 |
What's Included
- 2 Dynapro 6 forged billet calipers, black powder coat
- 2 SRP drilled and slotted rotors, 12.19in
- 2 vented rotor offset aluminum hubs
- Mounting brackets and hardware
- BP-10 brake pads
About Wilwood
Wilwood Engineering designs and manufactures brake systems for street, off-road, and racing applications. The 140-12947-D kit pairs forged Dynapro 6 calipers with a purpose-built hub and rotor package to bring modern braking performance to classic Mustang front spindles.
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FAQ
What is the 140-12947-D?The 140-12947-D is a Wilwood Dynapro 6 front hub brake kit with 12.19in drilled and slotted rotors built for 1965-1969 Ford Mustang disc and drum front spindles.
Does this kit fit both disc and drum spindle Mustangs?Yes, the 140-12947-D bolts onto factory disc or drum front spindles, though disc spindles require drilling and tapping three mounting holes for the caliper bracket.
How many pistons does each caliper have?Each Dynapro 6 caliper uses 6 stainless steel pistons with bore sizes of 1.62in and two 1.38in bores.
What wheel size do I need for this kit?This kit requires a minimum 15in wheel diameter, and wheel clearance should be verified against Wilwood's clearance diagram before purchase.
What bolt pattern does the hub use?The aluminum hub is drilled with a dual 5 x 4.50in and 5 x 4.75in bolt pattern.
Are brake pads included with this kit?Yes, the kit ships with BP-10 compound brake pads installed in the calipers.
Do I need brake lines for this kit?Yes, a compatible brake line kit is sold separately and required to complete the installation.
Will this kit change my wheel offset?Yes, this kit has a hub offset of plus .09in, which will move the wheels slightly outward from the fender on each side.
Install Instructions
- Raise and safely support the vehicle, then remove the front wheels.
- Remove the factory drum or disc brake components from each front spindle.
- For disc spindle applications, drill and tap the three mounting holes for the Wilwood caliper bracket as specified in the kit instructions.
- Install the new aluminum hub and torque to the specified hub nut preload.
- Mount the SRP rotor to the hub and install the Dynapro 6 caliper and bracket.
- Connect new brake lines, bleed the brake system, and torque all hardware to specification before test driving.
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