Wilwood Hat-Dynamic BB Front 1.74in Offset 5 x 4.50/4.75 - 12 on 8.75in

SKU: WIL170-13136

Brake Rotor Hats

WIL Rotor Hat...

Wilwood Hat-Dynamic BB Front 1.74in Offset 5 x 4.50/4.75 - 12 on 8.75in

SKU: WIL170-13136

Brake Rotor Hats

WIL Rotor Hat...

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

Wilwood's new Dynamic Bobbin Mount Hats incorporate a new rotor mounting system that 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. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion are eliminated.

Part Type

Brake Rotor Hats

Data: v4.2 - Upd: 2026-10-13 21:12:39

Specifications

Product Attributes - UPC: 889545042139
Product Attributes - Brand: Wilwood Disc Brakes
Product Attributes - Quantity: Sold individually.
Product Attributes - Part Type: Brake Rotor Hats
Product Attributes - Product Line: Wilwood Dynamic Bobbin Mount Hats
Product Attributes - Brake Rotor Hat Type: Bobbin
Product Attributes - Brake Rotor Hat Color: Black anodized
Product Attributes - Brake Rotor Hat Material: Aluminum
Product Attributes - Manufacturer's Part Number: 170-13136
Product Attributes - Brake Rotor Hat Bolt Circle: 12 x 8.75 in.
Product Attributes - Brake Rotor Hat Offset (in.): 1.74
Product Attributes - Brake Rotor Hat Clearance I.D. (in.): 7.10
Product Attributes - Brake Rotor Hat Face Thickness (in.): 0.25
Product Attributes - Brake Rotor Hat Center Hole I.D. (in.): 2.78
Product Attributes - Brake Rotor Hat Stud Hole Diameter (in.): 0.52

Reference Information

Brand Name/s	Wilwood
StreetFX SKU	wil170-13136
SFX Item ID	4406587
Supplier Item Code	4406587
Manufacturer SKU	170-13136
Manufacturer UPC	889545042139
Alternative References	1.74in, 8.75in