Weld Racing 71MB8090B72A RT-S S71 18x9 Black Anodized Wheel 5x4.75 7.2BS 56mm Offset Medium Pad

The Weld Racing RT-S S71 is a premium forged aluminum performance wheel that brings race-proven technology to the street. Part number 71MB8090B72A is an 18-inch x 9.0-inch wheel finished with a black anodized center, sized for a 5x4.75-inch (5x120.65mm) bolt pattern with 7.2 inches of backspace and a 56mm offset. This specific application features a medium mounting pad height, designed to clear high-performance factory brake systems.

Key Features:

• 3-Piece Welded Construction: Assembled using a unique welded process that delivers application flexibility and a superior strength-to-weight ratio
• Forged Billet Center: Classic Weld Racing 5-spoke star design machined from forged billet aluminum for maximum rigidity
• Cold Forged Rim Shells: Outer rim shells are cold forged from primary forging-grade aluminum alloys for durability and reduced weight
• Black Anodized Center Finish: Hard anodized black finish provides corrosion resistance and a clean, aggressive appearance
• Medium Pad Height: Clears high-performance factory disc brake systems, including those found on Corvettes and performance vehicles from the late 1980s onward, as well as many aftermarket brake systems
• Three Mounting Pad Options Available: The S71 line offers low, medium, and high pad configurations to accommodate drum brakes through modern multi-piston calipers (Brembo, Baer, Wilwood, and others)
• SAE J2530 Certified: Meets SAE J2530 Aftermarket Wheel (Street) Standards; 15-inch diameter versions additionally surpass SFI 15.1 Drag Race Drive Wheel Specifications
• 18-Inch Diameter: Requires conical (acorn-style) lug nuts for proper seating — shank lug nuts are not compatible with this diameter
• Center Cap and Valve Stem Included

Weld Racing's RT-S S71 series is engineered for modern sports cars, classic muscle cars, modified street machines, and pro-touring builds. The 3-piece modular construction allows for a wide range of widths from 4.5 to 18 inches, making the S71 one of the most versatile performance wheel lines available. Each wheel undergoes FEA analysis and in-house destructive testing to ensure safety and reliability.

Specifications:

• Diameter: 18 inches
• Width: 9.0 inches
• Bolt Pattern: 5x4.75 in. (5x120.65mm)
• Backspace: 7.2 inches
• Offset: 56mm
• Pad Height: Medium
• Center Finish: Black Anodized
• Material: Forged Aluminum
• Lug Nut Requirement: Conical lug nuts required (18-inch diameter)
• Includes: Center cap and valve stem