Wilwood Caliper-Powerlite 1.38in Pistons .790in/.860in Disc - Black

SKU: WIL120-8729-BK

Brake Calipers

WIL Powerlite Caliper...

Wilwood

Wilwood Caliper-Powerlite 1.38in Pistons .790in/.860in Disc - Black

SKU: WIL120-8729-BK

Brake Calipers

WIL Powerlite Caliper...

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

Powerlite 4-piston radial mount calipers combine pure race technology with a new generation of Wilwood performance enhancements. Their sleek profile, superior strength, and durability in higher temperature applications are easily adapted to a wide range of sports, rally, and off-road driving applications. The strength of the Powerlites is a combination of process and design. The process of stress-flow forging re-aligns the metal's grain structure within the contour of the caliper body. This eliminates the stresses and interruptions to the internal grain structure that occur when machining a straight block billet. Their FEA-generated radial transition design eliminates steps and shoulders in the area between the piston housing body and the caliper bridges. Incorporating a radius in this critical area substantially increases resistance to deflection and caliper separation under load. Structural deflection and volume displacement tests have proven the efficiency of this innovative design. Without even considering the overall greater strength and reliability of the billet forging, the reduction in overall deflection and fluid volume displacement translate into increased clamping efficiency with less pedal travel. The bottom line is a firm pedal with outstanding stopping power.

Part Type

Brake Calipers

Data: v4.2 - Upd: 2026-10-14 20:52:24

Specifications

Product Attributes - Brand: Wilwood Disc Brakes
Product Attributes - Manufacturer's Part Number: 120-8729-BK
Product Attributes - Part Type: Brake Calipers
Product Attributes - Product Line: Wilwood Powerlite Calipers
Product Attributes - UPC: 889545108118
Product Attributes - Caliper Series: Powerlite
Product Attributes - Caliper Piston Quantity: Four
Product Attributes - Piston Diameter (in.): 1.380
Product Attributes - Rotor Thickness (in.): 0.860 in.
Product Attributes - Caliper Material: Aluminum
Product Attributes - Caliper Color: Black
Product Attributes - Caliper Logo: Wilwood
Product Attributes - Parking Brake Provision: No
Product Attributes - Fittings Included: No
Product Attributes - Fitting Attachment 1: Female NPT
Product Attributes - Thread Size: 1/8 in. NPT
Product Attributes - Brake Pads Included: No
Product Attributes - Brackets Included: No
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold individually.

Reference Information

Brand Name/s	Wilwood
StreetFX SKU	wil120-8729-BK
SFX Item ID	4409530
Supplier Item Code	4409530
Manufacturer SKU	120-8729-BK
Manufacturer UPC	889545108118
Alternative References	1.38in, .790in/.860in