Zippers Performance


Caution: Beware of Unauthorized Discount Web Sellers

If you are considering purchasing a ThunderMax® system from a discount web seller... BEWARE! Get Informed Before You Buy.

Amazon® and eBay® sellers could be peddling used units as new, and many do not possess any knowledge about ThunderMax® systems. Some Amazon® and eBay® resellers only have a purchase account from a warehouse distributor. Their core business could be metric motorcycles or ATV’s, with little (if any) knowledge of Harley-Davidson® motorcycles and your performance needs.

At Zipper’s Performance Products, we receive calls from customers who have purchased a ThunderMax® system from these types of web sellers. Their stories can be unpleasant and regretful.

Some of these poor customer service experiences include:

      • Buying a “new” ThunderMax®, and receiving a used product
      • Receiving damaged or imposter modules
      • Missing communication cables
      • Used or damaged oxygen sensors

Zipper’s Performance Products has trained many exceptional dealers and resellers to be skilled Authorized ThunderMax® service providers. These authorized ThunderMax® dealers will ensure you receive a new ThunderMax® unit to fit your application with all necessary supporting parts so you fully enjoy your ThunderMax® experience.

If you need a referral for an authorized internet reseller or dealer, please contact Zipper’s Performance Products. Click Here for the "Contact Us" web form.

Note: The ThunderMax® 3 Year Limited Warranty is only valid to the original purchaser, and is non-transferable. Any used ThunderMax module will not include the value-added warranty.

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