- Description
1320 Performance Extended wheel studs . 1320 Performance extended wheels studs are manufactured using high-strength alloy steel. FITMENT: Mazda Miata front/rear for '90-'93, front only for '94-'05 Miata 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. 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˝)