Custom Felt F1x Cyclocross/Gravel Bike Build

Custom Felt F1x Cyclocross/Gravel/Adventure Bike

We just did a custom road bike build that’s too cool and sexy not to share. It’s a Felt F1x cyclocross frame built up to be an all-around adventure bike with an emphasis on dirt. The proud owner, local cyclist Jay Miles, is primarily a mountain biker but wanted a bike he could train on year-round that would still be capable, comfortable and fun on the dirt. The custom Felt F1x is also his secret weapon for the 2018 Crusher in the Tushar, a brutal 70 mile point-to-point gravel/road race in Southern Utah’s Tushar Mountains with over 10,000 feet of climbing and 6000 feet of descent, including a 4000 foot switch-backed, washboard gravel road downhill. There’s no doubt the F1x is going to be a whole lot faster than the mountain bikes he competed on for the past few years.

Jay Miles, Riding His Custom Felt F1x Gravel Bike
Park City cyclist Jay Miles, riding his custom Felt F1x gravel bike on one of the many trails around Park City, Utah.

The F1x is the flagship model for Felt’s FX Series cyclocross bike line. The Felt F1x was created and engineered to win World Cup cyclocross races. It’s the same frame that UCI World Champion cyclocross racer Wout Van Aert races on. It’s a serious race bike and an interesting choice for what, at least on the surface, appears to be a gravel bike.

TeXtreme Carbon Detail On the Felt F1x
A detail photo of the TeXtreme carbon fiber on the headtube area of the Felt F1x cyclocross bike frame.

As a world-class race bike, the Felt F1x is constructed from Felt’s renowned UHC Advanced + TeXtreme carbon and designed for snappy handling, instant acceleration and durability. Compared to gravel bikes, which are basically touring bikes for the dirt, the F1x is a Ferrari – all raw power and sharp handling.

Custom Felt F1x - Shimano Dura-Ace Shifter/Levers
Jay’s custom Felt F1x bike has Dura-Ace shifter/levers and Di2 electronic shifting with an XTR 1×11 drivetrain.
Custom Felt F1x - Shimano XTR Derailleur & Cassette
The drivetrain on this Felt F1x is as custom as the bike: it has a Shimano XTR rear derailleur and 11-46 casssette with a Rotor crankset, Dura-Ace shifter/levers and Di2 electronic shifting.

The drivetrain on Jay’s custom F1x is a 1×11 Shimano XTR mountain bike rear derailleur paired with Dura-Ace Di2 electronic shifting and a Rotor 3D+ crankset with a Rotor Q-Ring oval chainring. The gearing is customized for dirt and steep climbs with an 11-46 cassette and a 42-tooth chainring. It’s tailor-made for adventuring all over Utah’s mountain and desert roads – and perfect for the Crusher in the Tushar’s 10,000+ feet of climbing.

Custom Felt F1x - Reynolds Attack Carbon Wheel Detail
A detail of the Reynolds carbon Attack wheels on our custom Felt F1x gravel/adventure bike.

Wheels are an often overlooked bike component. Not with this bike. The Reynolds Cycling carbon Attack wheels are all about performance. The 24-spoke tubeless-ready carbon wheelset is super stiff and durable yet weighs in at just 1480 grams. The Reynolds Attack wheels are built for disc brakes and come with 12mm through-axles for extra stiffness. The carbon rims are 29mm deep with a 17mm internal width. They’re mounted up with 38mm Maxxis Rambler gravel tires, which offer a balance of speed on hard surfaces and traction on dirt and gravel.

Custom Felt F1x - Shimano Dura-Ace Disc Brakes
Shimano’s top-shelf Dura-Ace hydraulic disc brakes with 160mm rotors, on a custom Felt F1x gravel road build we built.

If you haven’t tried disc brakes on a road bike yet, get on it. They’re well past the experimental stage and there’s no reason not to have them, anymore. They feel like traditional cantilever brakes but with way better power, modulation and reliability. Jay’s Felt F1x dream bike is fitted with Shimano’s best – flat-mount Dura-Ace hydraulic disc brakes with road-specific 160mm Center Lock rotors. They’re light, aerodynamic and work soooo much better than cantilever brakes.

Custom Felt F1x Gravel Road Bike in Action
Jay Miles, cruising some Park City dirt on his new custom-built Felt F1x gravel road adventure bike.

With drop bars, skinny tires and no suspension, the Felt F1x is very different from a mountain bike. However, as you can see in the photos here, Jay is having fun exploring new terrain and getting acquainted with his new bike. He’s excited about all the new riding opportunities it opens up in and around Park City; and he’s looking forward to do his fifth Crusher in the Tushar on something faster and lighter than a mountain bike.

Have you been fantasizing about a custom bike? Let us help you make your bike dreams come true. We carry four road bike brands and seven mountain bike brands and we’d love to help you build the mountain or road bike of your dreams. Visit our Online Bike Store to browse all of the bikes we carry and get some inspiration. And visit our Buy a Bike page to tell us about your dream bike spec.

Jay Miles & His Custom Felt F1x Bike
Park City resident Jay Mile with his new, custom-built Felt F1x cyclocross / gravel / Crusher in the Tushar bike.

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