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Terms & Conditions

Thank you for purchasing the finest US made products available to reinforce your car's differential! 

As an online store, we take customer service and fraud attempts very seriously. By placing this order, the credit card or PayPal or Affirm user confirms they are the purchaser and is fully agreeing to purchase these items from Per4mance Development LLC. The purchaser also agrees to follow the 30-day money back guarantee program to ensure complete purchase satisfaction.

The purchaser also agrees that any signature provided for delivery (when required) is valid for their shipment and that they will not attempt a chargeback of their purchase for any reason whatsoever. Purchaser also agrees that the first step to resolve any concern is to contact Per4mance Development LLC via email at within 15 days of delivery. If you would like to make a purchase and do not agree to these T&C's, please email us at to request an online invoice to make your purchase.

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