Shop Pay Installments by Affirm

Buy Now, Pay Later 

Flexible payments for the parts you need, when you need them.

At DmaxStore, we know that sometimes you need your parts now, but would rather pay over time. That’s why we offer Shop Pay Installments, a flexible payment solution that lets you split your order into manageable payments at checkout.

How Shop Pay Installments Works

  1. Add items to your cart
    Shop for your favorite Duramax parts just like normal.

  2. Choose Shop Pay at checkout
    Select the Shop Pay option when you’re ready to check out.

  3. Pick your payment plan
    Choose to pay in 4 interest-free biweekly payments or monthly installments.*

    • Your first payment is due at checkout.

    • The rest will be automatically charged to your saved card on Shop Pay.

    • You’ll get an email reminder before each payment.

Why Choose Shop Pay?

Quick decision - Get a real-time decision on your eligibility, no long applications.

Flexible payments - Split your purchase into easy biweekly or monthly payments.

No surprises - No hidden costs or late fees. What you see is what you pay.*

Frequently Asked Questions

What is Shop Pay Installments?
Shop Pay Installments lets you split your purchase into 4 equal biweekly payments with 0% APR, or into monthly payments with no hidden or late fees.*

What payment methods are accepted?

  • Biweekly (0% APR): Debit or credit cards

  • Monthly (with interest*): Debit card only

    • Qualified customers may be eligible for 0% financing for 6 months

Is Shop Pay available for international customers?

  • No. Shop Pay Installments is only available to customers with a U.S. billing address and U.S. mobile number.

What’s the spending limit?

  • You can use Shop Pay Installments on orders up to $30,000 USD, including shipping, discounts, and taxes.

Can I pre-qualify before I visit the online store?

  • No, you’ll need to apply at checkout through the online store. You’ll get a real-time decision.

Can I buy gift cards with Shop Pay Installments?

  • No. Gift cards must be purchased separately from other products if you're using Shop Pay Installments.

Are there late fees?

  • Nope. There are no late fees, ever.

What if I miss a payment?

  • There are no penalties, but missed or partial payments may affect your credit score or future eligibility for Shop Pay Installments.

How do returns work?

  • Returns follow our store’s return policy.

    • Refunds are processed through Shop Pay and applied to your original payment method.

    • If your refund is partial, your payment plan may adjust to reduce your final payment or shorten your installment schedule.

    • Note: Any interest paid on monthly plans is non-refundable.

Ready to Buy Now, Pay Later?

When checking out at DmaxStore.com, just choose Shop Pay and select the payment plan that fits your needs. It’s that easy.

*Note: Rates from 0% APR or 10–36% APR. For example, a $500 purchase might cost $125/mo over 4 months at 0% APR. Payment options are offered by Affirm and are subject to eligibility. Options depend on your purchase amount, and a down payment may be required. See affirm.com/help for more info.