FLOWTHEORY SD IDEAS IN. REALITY OUT.
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Custom work / San Diego

Your idea.
Made real.

Car parts. Cultural pieces. One-of-a-kind creations.

Built around your measurements, your style, and your next idea.

Illustrative concept pieces

Automotive fitment

Parts designed around your vehicle.

Culture & identity

Bring your ideas and heritage to life.

Custom one-offs

Unique creations, built for you.

The process

Let’s build
something personal.

Share your idea below. For product fitment or help with an order, choose the matching request type.

  1. 01
    Share your ideaTell us what you have in mind.
  2. 02
    Work through the detailsWe'll review your measurements, references, and goals.
  3. 03
    Confirm your projectAgree on the project before work begins.
When you're ready to proceed
50% non-refundable deposit for approved custom projects.

Submitting an inquiry does not require payment.

Start a conversation

Tell us what you have in mind.

For a custom piece, tell us what it needs to do, where it will be used, and any measurements or reference photos you have. For fitment or order help, choose the matching request type below.

Need help with your order or fitment?

For questions about orders, shipping, returns, or custom 3D-printed parts, use the form or email us at support@flowtheorysd.com

We aim to respond within 2 business days.

No payment to inquire Follow-up by email

Link to photos, a drawing, or a 3D file. Make sure the link can be viewed.

More details / order help (optional)

This sends an inquiry, not an order. We'll discuss details before any project moves forward.

Good to know

Questions before you start?

Here's how custom requests work and what to expect before committing to a project.

Do I need a finished 3D model?

No. Start with a description, sketch, measurements, or reference photos. If you have a 3D file, include a viewable link so we can review it.

Is a deposit required for custom projects?

There is no payment to send an inquiry. A 50% non-refundable deposit is required if you decide to proceed with an approved custom project.

How are price and timing decided?

Pricing and timing depend on the design work, material, size, and quantity. We'll review your details and discuss the scope before you decide whether to proceed.

Can you help with an existing part?

Describe the part, its purpose, and what you need changed. Include dimensions and photos or a reference link so we can assess the request.