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    Any Returns must have a Return Authorization Number.  See the Shipping & Returns Page

    HEADLIGHT INQUIRIES.  Before contacting us regarding headlight fitment, be sure to read the top of our Headlight Section here.

    EMAIL (Best Way)

    The most efficient way to contact us is by email.

    • Emails are generally Not monitored evenings or Sundays.

    • Please allow 24 hours for a response, but in general it will be much sooner.

    • If you do not get a response in 48 hours, either A. We did not received your email, or B. We responded and it is sitting in your junk mail folder.

    • Include a phone number on emails so we can contact you if your email is bouncing back.

    • DO NOT SEND EMAILS WITH OVER 10MB OF PHOTOS.  Please resize any images to a reasonable size.  Emails larger than 10MB will not go through and, depending on your provider, you may not get a bounce back.

    For customer service issues, Technical Support, or Dealer Inquires please contact us at m4@m4sales.com 

    disco at dumont
    Phone 818-717-8840
    Monday - Friday
    • If you don't get through the first time, leave a message, we return messages in the order they were received.
    • Phone traffic is heavy Mondays, thank you for your patience.
    • Best Time to call 9:00am - 3:00pm PST
     
    Warehouse & Showroom (By Appointment Please)
    21356 Nordhoff St, STE 103
    Chatsworth, CA 91311
     
    Please only park in #103 or Visitor Parking spaces.
     
    OVERSIZE PARKING
    No Oversize Vehicles in the parking lot.  Oversize parking is avaialable outside the complex on Nordhoff St.  No Parking on Nordhoff after 4 P.M. due to anti-gridlock parking restrictions.
     
     
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