ROMAN AERO R FRAME XXV
Roman Aero R XXV Frameset – your aero race platform
The Roman Aero R XXV frameset is the starting point for a proper aero race bike build.
It’s the same frame we use for complete Aero R bikes, just stripped back so you can choose your own groupset, wheels and finishing kit.
Designed by the performance team at trainSharp, the Aero R frame is built to be fast, stable and race-ready on real roads, from criteriums and road races to flat and rolling chain gangs.
If you want to build your own premium carbon aero bike that doesn’t look like everyone else’s, this is your Roman.
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Who this frameset is for
The Aero R XXV frameset is ideal if you:
• Want a custom build with your own choice of groupset and wheels
• Are upgrading from an older frame but keeping favourite parts (e.g. wheels, groupset)
• Prefer a racier, aero-focused road bike rather than an endurance frame
• Like the idea of riding an independent UK performance brand instead of another mainstream logo
It’s aimed at riders who enjoy the process of specifying a bike exactly how they want it, with a frame that’s genuinely up to the job.
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Aero frame, real-world intent
The Aero R XXV frame is shaped for use able aero gains, not just catalogue appeal:
• Aero tube profiles and a clean front end to help you hold speed on flat and rolling terrain
• Geometry that gives sharp, predictable handling in criteriums and road races without feeling nervous
• A rear end tuned for direct power transfer, so sprinting and surging feel instant
Paired with the right wheels and kit, it’s a chassis that rewards hard riding and makes fast group days feel even better.
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Construction, carbon & key details
This isn’t an off-the-shelf open mould – the Aero R is built as a serious race tool:
• High-quality carbon layup – tuned for stiffness at the head tube and bottom bracket, with enough give in the stays and seat tube to stop it feeling like a plank on rough tarmac.
• Pressfit BB86 bottom bracket shell – a wide, well-supported standard for efficient power transfer and compatibility with modern road cranksets.
• Full internal routing – cables and hoses run inside frame, fork and cockpit for clean aerodynamics and a modern, purposeful look.
• Modern clearances – designed around wide-internal rims and up to 30–32 mm road tyres, so you can run a fast, comfortable setup on real roads.
• Flat-mount discs & thru-axles – standard modern brake and axle interfaces to keep builds simple and future-proof.
Everything is aimed at delivering a frame that’s fast, clean and easy to live with for the long term.
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Integrated look, practical ownership
The Aero R frameset is supplied with the matched front end and seatpost, so your finished bike looks and feels like a complete system:
• Roman Aero R XXV carbon frame
• Matching carbon fork
• Integrated bar/stem cockpit (for full internal routing and a clean front end)
• Dedicated aero seatpost with matching hardware
We’ve kept standards sensible so any competent workshop can work on the bike without special tools or proprietary oddities. It’s a high-end race frameset that a mechanic won’t hate you for.
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trainSharp Support
When you buy from us you get:
• Help choosing the right size and bar/stem setup
• The option to pair your bike with a specific bike fit so your position is dialled from day one
• UK-based workshop support for servicing, upgrades and repairs
• Cycle to Work / salary sacrifice options available on many builds
• UK-wide delivery or collection from our base near Lewes
If you’re unsure which size to order, or whether the Aero R or SL R is better for the way you ride, just drop us a message – we’re happy to talk it through.