Choosing between two carbon road frames often comes down to budget, frame size, and how much of the build you already own. Both of these options are rim-brake road frames with carbon construction, but they target different riders. The Felt Z1 is a new-old-stock bare frame in 54cm, listed at USD 199.95. The Specialized Roubaix Comp is a used frameset in 50cm that includes the frame, fork, and headset, listed at USD 395.00. The difference comes down to what you need to add and which size fits your body.
Quick Verdict
If you need a 50cm frameset with the fork and headset already sorted, the Specialized Roubaix Comp is the more complete starting point. If you want a 54cm bare frame and prefer to choose your own fork and headset, the Felt Z1 gets you there for a lower listed price.
Side-by-Side Comparison
| Product | Price | Price bar | Condition | Frame size | Included |
|---|---|---|---|---|---|
| Felt Z1 Road Bike Frame | USD 199.95 | New | 54 cm | Frame only | |
| Specialized Roubaix Comp | USD 395.00 | Used, good condition | 50 cm | Frame, carbon fork, FSA carbon headset, seatpost clamp |
Where Each Frame Wins
Felt Z1: Budget and bare-frame flexibility
At USD 199.95, the Felt Z1 is the lower-priced option by a meaningful margin. The 54cm frame, matte black/gloss red finish, and endurance-oriented Z-series geometry make it an interesting base for a custom road build. Because it is sold as a bare frame with no fork or headset, you can select those components yourself. The BB30 bottom bracket standard is specified, so you can plan the crankset around it. The main tradeoff is the extra parts you will need to source before the frame becomes rideable.
Specialized Roubaix Comp: Complete front end and smaller fit
The Specialized Roubaix Comp frameset costs USD 395.00 and includes the carbon frame, a full carbon fork, an FSA carbon headset, and a seatpost clamp. For a 50cm rim-brake build, that means the front end is already accounted for. The frame has normal cosmetic scuffs and wear, and it is built around 700C wheels. The higher listed price buys you a more complete package, but you should be comfortable with a used frame and a compact 50cm size.
Product Notes
Felt Z1 Road Bike Frame BB30 Rim Brake Matte Black Gloss Red Bare Frame NOS 54cm
The Felt Z1 is a new-old-stock carbon frame in 54cm, sold as a frame only. It uses a BB30 bottom bracket and is built for rim brakes, with an endurance-oriented Z-series geometry. At USD 199.95, it is the more affordable way to start a carbon road build if you already have a fork, headset, and small parts in mind. The matte black and gloss red color scheme is a distinctive look. The catch is that the exact model year is not confirmed, and the frame itself is the only part included. That means more shopping for the front end and bottom bracket components, but also more control over the final specification. If you are building from a bare frame anyway, the lower price makes it easier to allocate funds toward the fork and finishing kit you actually want.
Specialized Roubaix Comp Carbon Road Bike Frameset
The Specialized Roubaix Comp frameset is a used 50cm carbon frame that comes with a full carbon fork, an FSA carbon headset, and a seatpost clamp. It is in good condition with normal cosmetic wear and scuffs. It is designed for rim brakes and 700C wheels, making it a straightforward frameset for a road bike build. At USD 395.00, the higher listed price covers the included front-end parts, so you don't have to source a matching fork or headset separately. For someone who needs the complete front end, this is the more turnkey starting point. The bigger consideration is the size: at 50cm, this frameset is meant for a compact geometry, so make sure that fit works for you before committing.
Final Choice by Use Case
Go with the Felt Z1 if you want a 54cm frame, prefer a lower listed price near USD 199.95, and plan to source your own fork, headset, and finishing kit. Go with the Specialized Roubaix Comp if you need a 50cm frameset and want the frame, fork, and headset together at USD 395.00, even if that means accepting cosmetic wear on a used frame.
