What is included in the UMI Performance 3047 kit?

The kit includes the driver and passenger side aluminum hubs, premium bearing cups, cones, and the correct rawhide seals. You will need to provide your own 1/2-20 threaded wheel studs.

What size wheels are required for this brake conversion?

For C5 Corvette brake components, you will need a minimum of a 17-inch wheel for proper clearance. If you are using C6 Corvette brake components, an 18-inch wheel is required.

Can I use my existing wheel studs with this kit?

No, this kit does not include wheel studs. You will need to purchase 1/2-20 threaded wheel studs separately. The required length will depend on your wheel choice, offset, and any spacers used.

UMI Performance 78-88 GM G-Body C5/C6 Front Brake Conversion Hubs & Bearings

Specifications

Brand: UMI Performance
Part #: 3047
UPC: 3047

UMI Performance 78-88 GM G-Body C5/C6 Front Brake Conversion Hubs & Bearings

Name: UMI Performance 78-88 GM G-Body C5/C6 Front Brake Conversion Hubs & Bearings
Brand: UMI Performance
Price: 500.47 USD
Availability: InStock

$500.47

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UMI Performance 78-88 GM G-Body C5/C6 Front Brake Conversion Hubs & Bearings. USA-made aluminum hubs with premium bearings and seals for C5/C6 brake upgrades.

Key Features

Fits 1978-1988 GM G-Body vehicles, including many Chevrolet, Buick, GMC, Oldsmobile, and Pontiac models.
Includes driver and passenger side aluminum hubs, premium bearing cups, cones, and rawhide seals.
Hubs feature 5 x 4-1/2 and 5 x 4-3/4 bolt patterns.
Designed to face mount C5 brake rotors in the factory location, maintaining original front track width.
Made in the USA from performance aluminum.
Tested for road race and auto-x competition.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

This kit from UMI Performance gives you everything you need to mount C5 or C6 Corvette brake components onto your 1978-1988 GM G-Body vehicle. What you get in the box are the driver and passenger side aluminum hubs, along with the correct premium bearing cups, cones, and rawhide seals needed to complete the installation. These hubs are designed to face mount the C5 brake rotor precisely in the factory location, meaning your front track width won't change. They feature dual bolt patterns, 5 x 4-1/2 and 5 x 4-3/4, giving you flexibility with wheel choices.

These hubs are built in the USA from performance aluminum and have been thoroughly tested in demanding road race and auto-x conditions. They are the same components used on UMI's own competition vehicles. The kit is designed to work with UMI's P/N 3046 C5 conversion brackets. Keep in mind that wheel studs are not included, so you'll need to source 1/2-20 threaded studs separately. The length of these studs will depend on your wheel choice, offset, and whether you plan to use spacers.

It's important to note that C5 Corvette brakes require a minimum of a 17-inch wheel for clearance, while C6 brakes need at least an 18-inch wheel. This conversion is a popular choice for many GM G-Body owners looking to significantly upgrade their braking performance, fitting a wide range of vehicles like the Chevrolet Monte Carlo, Buick Regal, and Oldsmobile Cutlass Supreme.