SET OF (4) ALUMINUM HUB CENTRIC RINGS 73.1 / 67.1 MAZDA 3 6 RX-7 RX-8 MAZDASPEED Item DescriptionAluminum Hub Centric Rings – Aluminum hub rings are the perfect addition to your new wheels. These hub rings ensure a perfectly smooth vibration free ride. Eliminates wheel vibration Ensures perfectly “Hub-Centric” wheel installation Vehicle specific fitment Installs in minutes Specifications Outter Diameter 73.1mm Inner Diameter 67.1mm Material Aluminum Manufacturer SKU SET-HRN-ALU-73.1-67.1 What are hub-centric rings for?Most aftermarket wheels have a large center hub diameter so the wheels will fit a large variety of vehicles. The hub-centric rings are made to fill the gap between the wheel and the vehicles hub. This not only make installation of your new wheels much easier but will also help eliminate any vibrations you may encounter. How do I know which hub ring to choose?Hub rings are sized by using two different numbers that are measured in millimeters. The first number such as 73.1 is the diameter of the hub bore on the wheel you are using and is the outside diameter of the hub ring. The second number such as 67.1 is the diameter of the hub on your vehicle and is the inside diameter of the hub ring. If you are not 100% sure of your vehicle hub size, send us an email or give us a call (818) 309-1382 and we will be happy to look it up for you. Just provide your Year, Make, Model, and trim level. International Customers Use the Shipping Calculator tab to calculate shipping costs to any country. International shipping costs are based on a combination of the package weight, dimensions and destination country. Please note! Import Duties, taxes and charges are not included in the item price or shipping cost. These are the buyer’s responsibility. Please check with your country’s customs office to determine what additional costs will be prior to bidding or buying. Shipping Methods We are happy to offer FREE Shipping to orders shipped to all 50 states in USA all US territories. Your order will ship within just one (1) business day and will arrive approximately 1-5 days later. Delivery time depends upon your distance from Los Angeles, California. Need it faster? No problem! We also offer expedited shipping methods for a nominal fee. Please see the “Shipping & Payments” tab for details.Copyright © 2018 SCS International Inc. All rights reserved.