Serrai GRXDi2 - Custom Gravel bike - electronic shifting

*if you are unsure what selections to choose, click here to schedule a phone consultation. The selections you make here are changeable after the order is placed.

The Zinn Serrai is our premium custom gravel bike built with Shimano GRX Di2 2x12 speed electronic shifting components and the frame material of your choice. Contact us with any questions about how to customize this bike.

The Serrai is designed and handmade specifically for each rider. Every custom Zinn frame is made one at a time by our veteran framebuilders with the highest level of quality you can find. Our precision welds and beautiful finishes are a testament to our dedication to quality. A perfect fit is the cornerstone of your custom bike and once you place your order we will contact you to arrange a remote or in-person bike fit.

The Custom Ordering Process

1. Choose your frame material
2. Customize your effective frame size based on your height
3. Customize your riding position based on your proportions and preferences
4. Choose your upgrades
5. Submit your order and pay the 50% deposit

The Bike Fit process

Once your order is placed, the bike fit starts. 

1. We will contact you to schedule your in-person or remote bike fitting
2. Once we have fit information for you, we will send your custom design to you for approval
3. Once you approve the design, it will move into production

The Build and Component Selection Process

1. We will send you a fully itemized list of components based on your bike fit and design
2. Optional upgrades and add-ons will be available to select
3. We will work with you one on one to customize gear ratios, tires, and more

Customizing the Aesthetics of your bike

Once your order is placed, you will receive an aesthetics customization questionnaire so that you can customize the way your bike looks. This will include Titanium anodizing, paint, powder coat, and component accent colors. We know how important aesthetics are so we want you to have the opportunity to make your bike look exactly the way you want it.

*if you are unsure what selections to choose, click here to schedule a phone consultation. The selections you make here are changeable after the order is placed.