MX-5 Miata NA/NB ARP Extended Wheel Stud Kit

Upgrade your Mazda MX-5 with ARP Wheel Studs, designed to withstand the rigors of high-performance driving and motorsport conditions. ARP (Automotive Racing Products) is globally recognized for setting the industry standard in performance fasteners. Founded with a commitment to engineering excellence, ARP manufactures high-strength components used by leading racing teams and enthusiasts alike, ensuring superior reliability and durability.

These wheel studs are made from heat-treated premium steel, precision-machined for consistent quality, and are significantly stronger than OEM options. With enhanced tensile strength and corrosion resistance, these studs provide the confidence you need for track use, aggressive driving, or simply upgrading the safety and longevity of your Miata’s wheels. Trust ARP’s decades of expertise and unmatched quality to keep your wheels secure, no matter where your car takes you.

Specifications (100-7719)

Fits:
1989-1993 cars – NA (Mk1) front and rear
1994-2005 cars – NA (Mk1), NB/NBFL (Mk2, Mk2.5) front axle ONLY.

• Knurl Diameter: 12.88 mm (0.507˝)
• UHL (Under Head Length): 70 mm (2.750˝)
• Knurl Length: 8.5 mm (0.335˝)
• Nose Length: 8.9 mm (0.350˝)
• Thread Size: M12 x 1.5
• Wheel Stud Hole Size (Cast Iron/Steel Hub): 12.47 – 12.72 mm (0.491˝ – 0.501˝)
• Cast Iron/Steel Hub Drill Bit Size (actual dim.): 12.5 mm (0.492˝)
• Wheel Stud Hole Size (Aluminum Hub): 12.47 – 12.62 mm (0.491˝ – 0.497˝)
• Aluminum Hub Drill Bit Size (actual dim.): 12.5 mm (0.492˝)

Specifications (100-7720)

Fits:
1994-2005 cars – NA (Mk1), NB/NBFL (Mk2, Mk2.5) rear axle ONLY.

• Knurl Diameter: 14.7 mm (0.579˝)
• UHL (Under Head Length): 70 mm (2.750˝)
• Knurl Length: 7.62 mm (0.300˝)
• Nose Length: 8.9 mm (0.350˝)
• Thread Size: M12 x 1.5
• Wheel Stud Hole Size (Cast Iron/Steel Hub): 14.3 – 14.55 mm (0.563˝ – 0.573˝)
• Cast Iron/Steel Hub Drill Bit Size (actual dim.): 14.5 mm (0.571˝)
• Wheel Stud Hole Size (Aluminum Hub): 14.3 – 14.45 mm (0.563˝ – 0.569˝)
• Aluminum Hub Drill Bit Size (actual dim.): 9/16˝ (0.563˝)

Each product contains four studs – good for one wheel hub.

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