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Product details
This rear AMC kit combines black Dynalite calipers and plain 12.19-inch rotors with internal parking brakes. The listed Javelin and Javelin AMX applications require the specified housing flange and 2.60-inch axle offset. Founded in 1977 under Bill Wood, Wilwood Engineering operates from Camarillo, California. The company designs and manufactures disc braking systems and components, including calipers, master cylinders, brake rotors, fittings, valves and brake lines. Its motorsport, specialized and street-performance range requires individual parts matched to the complete braking arrangement.
Technical Details
- Manufacturer part number: 140-13398
- Application and package: Rear Brake Kits - Street Performance; Rear Kits; Disc; Parking; Sold as a kit.
- Hydraulic inlet: 1/8-27 NPT
- Wheel bolt pattern(s): 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm; 5 x 5 in; 5 x 127 mm
- Stud-hole / clearance provision: 0.52 in; 13.21 mm; diameter provision, not a thread designation
- Wheel diameter starting requirement: 15 in; 381 mm; verify the individual wheel against the installation drawing
- Rear axle-end interface: AMC; axle/flange offset 2.60 in; 66.04 mm
- Included mechanical components: Mounting hardware: Yes; hub(s): No; spindle(s): No
- Hydraulic components supplied: Master cylinder: No; brake booster: No; brake lines: No
- Specified pad compound: BP-10
- Rotor dimensions: 12.19 in; 309.63 mm outside diameter; 0.81 in; 20.57 mm thickness
- Rotor construction: Iron; Vented; Plain Face
- Caliper assembly: Forged Dynalite Internal; 4 pistons per caliper; Forged Aluminium body; Lug mount
- Piston and finish specification: Stainless pistons; Black calipers; Black Powder Coat
Fitment & Compatibility
Verify the actual AMC flange, register and axle offset before using the 1971–1974 application rows. DS1026 preserves the existing hub and relevant axle-retainer/shim arrangement; hoses and parking cables are separate.
Documented model groups, subject to each year, submodel and spindle/axle qualification: American Motors Javelin, Javelin AMX. Application distinctions include AMX / AMX Disc Brake Spindle; AMX / AMX Drum Brake Spindle; Base / Disc Brake Spindle; Base / Drum Brake Spindle; Disc Brake Spindle, Bendix Calipers; Disc Brake Spindle, Kelsey Hayes Calipers; AMX / Disc Brake Spindle; AMX / Drum Brake Spindle.
The installation drawing specifies a 2.82-inch axle register and the corresponding centering-adapter arrangement. Check the housing pattern and axle offset, then confirm the flange fits within the 6.61-inch diameter limit with its 0.050-inch x 45-degree chamfer.
Hydraulic hoses/fittings and parking-brake cables, adapters and cable hardware are not included. Choose a compatible cable arrangement for the internal parking brake; universal cable systems may require vehicle or cable modifications.
Kit may fit some 15" wheels. Check wheel clearance diagram in kit installation instructions before purchase.
Manufacturer References
- Wilwood exact kit specifications
- Wilwood installation instructions DS1026
- Axle measurement worksheet
Contact PMB Performance with the brake-kit identification and measurements for help selecting the part. Our team brings over 20 years of experience.
Review the complete application table below with the year, submodel and installation qualifications above.
| Years | Make | Model | Submodel | Model option | Front brakes | Rear brakes | Kit application | Notes |
|---|---|---|---|---|---|---|---|---|
| 1971-1973 | American Motors | Javelin | AMX | AMX Disc Brake Spindle | Disc | Drum | Rear Kit | 1, 2 |
| 1971-1973 | American Motors | Javelin | AMX | AMX Drum Brake Spindle | Drum | Drum | Rear Kit | 1, 2 |
| 1971-1973 | American Motors | Javelin | Base | Disc Brake Spindle | Disc | Drum | Rear Kit | 1, 2 |
| 1973 | American Motors | Javelin | Base | Drum Brake Spindle | Drum | Drum | Rear Kit | 1, 2 |
| 1974 | American Motors | Javelin | Disc Brake Spindle, Bendix Calipers | Disc | Drum | Rear Kit | 1, 2 | |
| 1974 | American Motors | Javelin | Disc Brake Spindle, Kelsey Hayes Calipers | Disc | Drum | Rear Kit | 1, 2 | |
| 1974 | American Motors | Javelin AMX | AMX | Disc Brake Spindle | Disc | Drum | Rear Kit | 1, 2 |
| 1974 | American Motors | Javelin AMX | AMX | Drum Brake Spindle | Drum | Drum | Rear Kit | 1, 2 |