UMI Performance umi304647 78-88 GM G-Body C5/C6 Front Brake Conversion Hubs, Bearings and Bracket Kit

UMI’s C5/C6 conversion kit includes laser cut UMI conversion brackets, light weight USA made aluminum hubs and premium bearings. P/N 304647 includes everything needed to adapt the C5/C6 abutment brackets, calipers and rotors to the G-Body spindles.  The hub features 5 x 4-1/2 and 5 x 4-3/4 bolt patterns and is intended to face mount the C5/C6 brake rotor in exact factory location (front track width is unaffected). The kit includes premium bearing cups and cones along with the correct rawhide seal for great performance and reliability. The 304647 kit is the choice for UMI’s Green Machine and has been thoroughly tested to withstand road race and auto-x competition. 100% manufactured in USA as well as tested and raced out of Philipsburg, PA – USA. Kit includes: UMI conversion brackets, driver and passenger side aluminum hubs, correct bearings and seals to mount the C5/C6 calipers and abutment brackets. Wheel studs are not included, 1/2-20 threaded studs will be required to complete installation. Determine stud length after choosing wheel and considering offset, whether or not spacers are required, and after determining wheel flange thickness. Kit requires C5 or C6 calipers, rotors, brake pads and brake lines. A detailed list of GM part numbers is included. Requirements: C5 brakes require a minimum of a 17” wheel for clearance while C6 requires an 18”wheel. Please research wheel fitment before purchasing. Mounts 1997-2013 C5 or C6 front calipers and rotors to the 78-88 GM G-Body factory spindle. Conversion brackets are CNC laser cut from 3/8” thick mild steel and feature a heavy duty black powder coat finish.

The UMI Performance umi304647 conversion kit adapts 1997-2013 C5 or C6 Corvette front calipers and rotors to 1978-1988 GM G-Body factory spindles. The kit includes CNC laser-cut conversion brackets, lightweight USA-made aluminum hubs, premium bearings, bearing cups and cones, and the correct rawhide seals. It is designed to face-mount the C5/C6 brake rotor in the factory location without affecting the front track width.

Conversion brackets are made from 3/8-inch mild steel and finished with a heavy-duty black powder coat. The kit was developed for UMI Performance’s Green Machine and tested for road racing and autocross competition. It is manufactured and tested in the USA.

C5 or C6 calipers, rotors, brake pads and brake lines are required for installation. Wheel studs are not included; 1/2-20 threaded studs are required, with stud length determined after selecting the wheels and considering wheel offset, spacer requirements and wheel flange thickness. C5 brake applications require a minimum 17-inch wheel for clearance, while C6 applications require an 18-inch wheel. Research wheel fitment before purchasing.

What's Included: UMI conversion brackets, driver- and passenger-side aluminum hubs, correct bearings and seals, and a detailed list of GM part numbers.

Features:

• Vehicle Application: Mounts 1997-2013 C5 or C6 front calipers and rotors to 1978-1988 GM G-Body factory spindles.
• Conversion Brackets: CNC laser-cut from 3/8-inch mild steel and finished with a heavy-duty black powder coat.
• Aluminum Hubs: Lightweight USA-made hubs feature 5 x 4-1/2-inch and 5 x 4-3/4-inch bolt patterns.
• Rotor Position: Face-mounts the C5/C6 brake rotor in the exact factory location without affecting front track width.
• Bearing Package: Includes premium bearing cups and cones with the correct rawhide seals.
• Testing and Manufacture: Manufactured in the USA and tested and raced in Philipsburg, Pennsylvania.
• Installation Requirements: Requires C5 or C6 calipers, rotors, brake pads and brake lines; 1/2-20 threaded wheel studs are required and not included.
• Wheel Clearance: C5 brake applications require a minimum 17-inch wheel, while C6 applications require an 18-inch wheel.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: false
Units Per Sku: 1