Wilwood Dynapro Lug Mount Single Rear Dynamic Kit SA Drilled 58-64 Olds/Pont .690in Studs

SKU: WIL140-12550-D

Disc Brake Kits

WIL Dynapro Brake Kit...

Wilwood

Wilwood Dynapro Lug Mount Single Rear Dynamic Kit SA Drilled 58-64 Olds/Pont .690in Studs

SKU: WIL140-12550-D

Disc Brake Kits

WIL Dynapro Brake Kit...

Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.

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Description

Wilwood's new Billet Dynapro Lug-Drive Dynamic Stainless Super Alloy Rotor Brake Kits are especially beneficial to cars that rely heavily on the rear brakes for stopping and any other high speed, heavy weight cars that generate above average rear brake heat. The lug-drive rotor mounting system eliminates the rotor bolts and instead, a large single internal snap-ring retains the rotor in the hat, making assembly and installation literally a snap. This system allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Kits are available in two rotor diameters: A traditional 11.44” diameter and a smaller 11.25” diameter for clearance with bead lock rims. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. Spring-loaded, replaceable stainless steel inserts in each lug-drive slot protect the aluminum hat from wear that would otherwise be caused by loading of the stainless steel rotor against the hat when brake torque is applied. Kits are available in Single and Dual caliper configurations.

Part Type

Disc Brake Kits

Data: v4.2 - Upd: 2026-10-13 21:14:18

Specifications

Product Attributes - UPC: 889545016796
Product Attributes - Brand: Wilwood Disc Brakes
Product Attributes - Position: Rear
Product Attributes - Quantity: Sold as a kit.
Product Attributes - Part Type: Disc Brake Kits
Product Attributes - Offset (in.): 2.810 in.
Product Attributes - Product Line: Wilwood DynaPro SA Lug Drive Dynamic Rear Drag Brake Kits
Product Attributes - Rear Rotor Style: Cross-drilled surface
Product Attributes - Rear Caliper Color: Black
Product Attributes - Rear Rotor Diameter: 11.44 in./290.60mm
Product Attributes - Rear Rotor Included: Yes
Product Attributes - Brake Hoses Included: No
Product Attributes - Front Rotor Included: No
Product Attributes - Rear Caliper Included: Yes
Product Attributes - Rear Caliper Material: Forged billet aluminum
Product Attributes - Brake Booster Included: No
Product Attributes - Front Caliper Included: No
Product Attributes - Front Spindles Included: No
Product Attributes - Parking Brake Provision: No
Product Attributes - Rear Rotor Construction: Solid
Product Attributes - Master Cylinder Included: No
Product Attributes - Axle Housing Flange Style: Oldsmobile/Pontiac (3.500 in. x 2.37 in.)
Product Attributes - Manufacturer's Part Number: 140-12550-D
Product Attributes - Rear Rotor Thickness (in.): 0.35
Product Attributes - Rear Caliper Piston Quantity: Four
Product Attributes - Brake Rotor Bolt Pattern (mm): Dual 5 x 120.65mm/5 x 127.00mm
Product Attributes - Brake Rotor Bolt Pattern (in.): Dual 5 x 4.75 in./5 x 5.00 in.
Product Attributes - Minimum Recommended Wheel Diameter (in.): 15 in.

Reference Information

Brand Name/s	Wilwood
StreetFX SKU	wil140-12550-D
SFX Item ID	4405702
Supplier Item Code	4405702
Manufacturer SKU	140-12550-D
Manufacturer UPC	889545016796
Alternative References	.690in