- Description
1320 Performance Extended wheel studs . 1320 Performance extended wheels studs are manufactured using high-strength alloy steel. FITMENT: 94-05 Mazda Miata Front and Rear hubs PRODUCT DESCRIPTIONS 1320 Performance extended wheels studs are manufactured using high-strength 10.9 Grade alloy steel. These extended wheel studs are designed and intended to be used with any open-ended lug nuts on racing slicks, or when wheel spacers are required. Our extended stud replacements are designed to press-fit into the original hole in the OEM hub with a hydraulic press, Aftermarket hub might have a different Knurl diameter than stock so they are not recommended. FRONT Specifications Knurl Diameter 0.507˝ UHL 2.750˝ Knurl Length 0.335˝ Nose Length 0.350˝ Diameter - Pitch M12 x 1.5 Wheel Stud Hole Size - Cast Iron/Steel Hub 0.491˝ - 0.501˝ Cast Iron/Steel Hub Drill Bit Size (actual dim.) 12.5mm (0.492˝) Wheel Stud Hole Size - Aluminum Hub 0.491˝ - 0.497˝ Aluminum Hub Drill Bit Size (actual dim.) 12.5mm (0.492˝) REAR Specifications Knurl Diameter 0.579˝ UHL 2.750˝ Knurl Length 0.300˝ Nose Length 0.350˝ Diameter - Pitch M12 x 1.5 Wheel Stud Hole Size - Cast Iron/Steel Hub 0.563˝ - 0.573˝ Cast Iron/Steel Hub Drill Bit Size (actual dim.) 14.5mm (0.571˝) Wheel Stud Hole Size - Aluminum Hub 0.563˝ - 0.569˝ Aluminum Hub Drill Bit Size (actual dim.) 9/16˝ (0.563˝)