Wilwood Rear Oldsmobile/Pontiac Drag Brake Kit, 11/16-Inch Studs, Drilled 11.44-Inch Steel Rotors

Olds/Pontiac rear drag kit with Wilwood Dynalite calipers and drilled rotors for 11/16-inch studs. Confirm the conflicting axle offset before purchase. Founded in 1977 under Bill Wood, Wilwood Engineering operates from Camarillo, California. The company designs and manufactures disc brake systems and the calipers, rotors, master cylinders, valves, fittings and lines used within them. Its motorsport, street-performance and specialized applications depend on compatible brake components.

Technical Details

• Manufacturer part number: 140-5349-BD
• Brake calipers: For this package, the forged aluminum calipers have type iii anodized exteriors and stainless pistons, 4 per caliper.
• Rotor geometry: Each rotor is 0.35 inch wide with a 11.44-inch outside diameter; the solid steel design has drilled surfaces.
• Installation interfaces: Confirm lug mounting and a hydraulic connection compatible with the 1/8-27 NPT inlet.
• Axle mounting: Olds/Pontiac; Offset requires confirmation: manufacturer product page and instruction cover disagree.
• Rotor/hat wheel-stud clearance pattern: 5 X 4.75 in; 5 X 5 in (5 X 120.65 mm; 5 X 127 mm)
• Wheel fit: Wheel diameter alone is insufficient: test the template for this nominal 15-inch minimum package.
• Package scope: Supplied: mounting hardware. Not included: master cylinder, booster, spindles, flexible brake lines, hubs.
• Wheel-stud requirement: 11/16-inch studs per DS-271; verify exact hat and axle assembly
• Parking brake: No parking-brake mechanism supplied

Fitment & Compatibility

Confirm the Oldsmobile/Pontiac housing end, actual wheel studs and measured offset with Wilwood. The product page gives 2.91-inch offset, DS-271 gives 2.81 inches, and the wheel-stud arrangement is specified as 11/16 inch. The page and installation-sheet offsets disagree; resolve the exact assembly before ordering. The 0.700-inch hat holes are clearances, not the wheel-stud thread. The modified vehicle entries in the table below do not identify the installed rear housing end.

Manufacturer Documents

• Wilwood DS271 installation instructions
• Wilwood AXLE-OFFSET-WORKSHEET-WILWOOD technical bulletin

Wilwood kit specifications and component list

Manufacturer Warning

WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.

Discuss the current brake arrangement with PMB Performance if a mounting or clearance requirement is uncertain. More than 20 years of experience informs our parts and fitment support.

Vehicle Applications

Application Notes

1. Hats use 5 x 4.75-inch / 5 x 5.00-inch wheel patterns for 11/16-inch wheel studs per Wilwood DS-271. Confirm the exact hat and axle assembly before ordering.
2. Universal Flexline kits available: 220-7056 (14"), 220-7699 (16") or 220-8307 (18"). Choose correct length for your application.
3. This rear service-brake kit has no parking-brake mechanism and includes no parking-brake cables. A separate compatible parking-brake solution is required where applicable.
4. Line kit included (manufacturer): None