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Wilwood Billet Narrow Dynalite Radial Mount Inboard Brake Kits 140-15346 Disc Kit, Inboard, Rear, Cross-drilled Rotors, Gray/Silver Calipers, for Sprint Axles with 48 Splines, Kit

SKU: WIL140-15346

Disc Brake Kits

Wilwood Billet Narrow Dynalite Radial Mount Inboard Brake Kits 140-15346 Disc Kit, Inboard, Rear, Cross-drilled Rotors, Gray/Silver Calipers, for Sprint Axles with 48 Splines, Kit

SKU: WIL140-15346

Disc Brake Kits
A$3,418.48
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.

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Description

Brake System - Billet Narrow Dynalite - Rear - 4 Piston Caliper - 12 in Slotted Titanium Rotor - 3 x 46 Spline Sprint Car Hat - Aluminum - Gray Anodized - Kit


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 20:15:54

Data: v4.2 - Upd: 2026-11-08 20:08:20

Features

Note for Pistons, Rings, Rotors, Rods and engine internals

Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.

(keyword: rotors)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Wilwood, Wilwood Disc Brakes
StreetFX SKU wil140-15346
SFX Item ID 4781147
Accounting SKU wil-140-15346
Manufacturer SKU 140-15346
Manufacturer UPC 889545086508
Alternative References WIL-140-15346

Disc Brake Kit, Billet Narrow Dynalite Radial Mount Inboard, Rear, Cross-drilled Rotors, Gray/Silver Calipers, for Sprint Axles with 48 Splines, Kit

Wilwood Billet Narrow Dynalite radial-mount inboard brake kits feature a fully engineered bolt-on brake system for sprint car quick-change rears with 3.00 in. x 46 splined axles. Available in several choices, the kits will have titanium, Super Alloy, or steel .810 vented or solid discs and a newly designed dynamic mount rotor axle clamp, providing the lowest rotating weights available for Sprint racing.

The lightweight advantages of Wilwood Sprint rotors are fortified with the high durability, long wear, and superior heat control properties of the advanced materials used. The billet Dynalite radial mount 4-piston calipers are Type III Anodized and will be fitted with composition metallic or BP-40 pads to produce superior stopping power and a consistent fade-free response. Kits will also include an axle clamp with a dual mount rotor adapter with T-nuts, radial mount bracket assembly, and mounting hardware. Choose the preferred kit for your braking needs.

Product Attributes
BrandWilwood Disc Brakes
Manufacturer's Part Number140-15346
Part TypeDisc Brake Kits
Product LineWilwood Billet Narrow Dynalite Radial Mount Inboard Brake Kits
UPC889545086508
PositionRear
Front Rotor IncludedNo
Rear Rotor IncludedYes
Rear Rotor StyleCross-drilled surface
Rear Rotor ConstructionSolid
Rear Rotor Diameter12.00 in./304.80mm
Rear Rotor Thickness (in.)0.36
Front Caliper IncludedNo
Rear Caliper IncludedYes
Rear Caliper Piston QuantityFour
Rear Caliper MaterialForged billet aluminum
Rear Caliper ColorGray/Silver
Brake Pads IncludedYes
Friction Material NameBP-30
Parking Brake ProvisionNo
Offset (in.)0.000 in.
Front Spindles IncludedNo
Master Cylinder IncludedNo
Brake Booster IncludedNo
RemanufacturedNo
Brake Hoses IncludedNo
QuantitySold as a kit.
NotesFor use on sprint axles with 48 splines.

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