If you have any specific questions about any information regarding 5x Racing please contact us by email first. We are on online business and do not have office staffing available to answer phones. Email is the best way to contact us and get the answers you need, we check our emails at least twice a day for order input and processing, once in the morning and once in the afternoon. We even check emails on the weekends! If you need a physical contact and have to talk to us on the phone and email will not suffice, please send us an email with your phone number and a good time to call you back. Thanks! 5XR Team