Gravel Bikes
We craft custom gravel bikes in titanium or steel, each tailor-made for your perfect fit and unmatched performance. Every frame is hand-built by our experienced team, guaranteeing lasting quality in every ride. Read more.
The Zinn Serrai GRX is our premium custom gravel bike built with Shimano GRX 2x12 speed mechanical shifting components and the frame material of your choice. Start customizing your bike below using the selection tools.
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. Start customizing your bike below using the selection tools.
The Zinn Serrai is our premium custom gravel bike built with Shimano Sram Force AXS XPLR 1x13 speed electronic shifting components and the frame material of your choice. Contact us with any questions about how to customize this bike.
The Zinn Serrai In-Route is a custom titanium gravel bike built with fully internal cable routing and Sram Force AXS 1x12 speed wireless electronic shifting. This bike is built for you and you can customize your fit and components below.
The Stelvio Pinion is an All-road touring bike featuring the Pinion gearbox with electronic shifting, belt drive, and drop bars. This bike is built for gravel and road riding and touring.
The Zinn Serrai In-Route is a custom titanium gravel bike built with fully internal cable routing featuring Sram Red AXS 1x13 speed wireless electronic shifting. This bike is built for you and you can customize your fit and components below.
Custom Gravel Bikes - Made in ColoradoThe Serrai is our custom gravel bike or cyclocross bike that’s designed and handmade specifically for you. Every custom Zinn frame is made one at a time by our veteran framebuilders with the highest level of quality you can find. We use premium materials in all of our custom frames sourced in the US. Our precision welds and beautiful custom finishes are a testament to our dedication to quality. Whether you’re into racing cyclocross, long gravel rides, or just recreational cycling, the Zinn Serrai custom gravel bike will exceed your expectations in every way. |
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Perfect fit on every Zinn BikeEvery Zinn bike starts with the perfect fit. Whether you want an aerodynamic position for racing or a comfortable, upright posture for long days in the saddle, we tailor every detail to your unique needs. Your riding position and body proportions guide every design choice—from custom top tube lengths to your choice of sport or upright geometry, giving you the ride style and comfort you need, even if you have specific body mechanics or injuries. The tubes are hand picked based on your weight to optimize durability, comfort, and stiffness. Sport positions boost aerodynamics and let you stretch out for speed, while upright setups prioritize comfort and help ease neck or back pain on longer rides. We match every element—frame, crank length, wheels, saddle width, stem, and handlebars—to your body and riding style. Zinn Cycles builds bikes for the widest size range of riders in the world, from 4'7" to 7'5". No matter your height, build, or proportions, your Zinn bike will deliver precision fit and unmatched comfort, guaranteed. |
Custom AestheticsWe want your bike to be unique and beautiful. We’ll help you choose custom colors and finishes that make your ride truly yours. Zinn titanium frames feature anodized graphics in your choice of color, with the option to add extra custom graphics and designs for a one-of-a-kind look. Want even more personalization? We offer painted titanium frames with any color—plus multi-color fades and unique masked designs. Steel frames include a durable single-color powder coat, with upgraded paint options available. We can also match component accents—like headsets, seat binders, spacers, bolts, and tire valves—in colors to suit your style. |
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Built to RideYour custom bike is meant to be ridden! We want you to love riding your bike for many years. We are here to help you achieve your cycling goals after you get your bike and for years down the road. We can help you maintain your bike so it lasts forever, and we can also help you with coaching, group rides, or adventure cycling tours so that you get the most out of your custom bike experience. |
US and Worldwide ShippingWe ship bikes, cranks, components, and clothing anywhere in the world. All bikes are shipped fully assembled with the front wheel removed, and the handlebar disconnected from the stem. We are extremely careful to protect your bike fully from the aggressive package handlers that it may encounter. Your bike will be well padded, wrapped and tightly packed into the box so that it cannot move while in transit. When you receive your bike you will have minimal assembly to get it ready to ride, and if you have no mechanical experience with bikes, we recommend taking it to a bike shop. We can even ship directly to your local bike shop if you prefer. Click here for assembly and maintenance instructions to get your bike up and running and keep it running smoothly for many years. |
