These are replacement axle shafts for either the stock or Lone Star suspension kit. The rear axles are made from 300M and the fronts are 4340.
While we try to keep product in stock, unfortunately we aren’t able to keep all products on the shelf at all times. Some products could have a lead time of 10 weeks or more. We do ask that if you are needing to order a product that is time sensitive that you call us and check stock/eta on that part before proceeding. We also have distributors that might have the part you are looking for in stock and we can point you in that directions. Some parts are subject to a restock fee.