Planet X: Sheffield Roots, Carbon Road Bikes and Titanium Gravel Versatility
Planet X is a British bicycle brand with Sheffield roots and a range that connects carbon road riding with titanium gravel adventures. Its identity centres on making enthusiast cycling more accessible, while its model families offer different answers to a practical question: how much of your riding stays on tarmac, and how much ventures beyond it?
Sheffield origins and an accessibility mission
In its company history, Planet X traces its origins to Sheffield and describes a business created by cycling enthusiasts concerned about equipment costs. That value-focused outlook remains central to its own account of the brand. The company also offers custom bike building and buying support, making the choice of a complete build part of its proposition.
There is an important distinction when browsing its shop: the wider catalogue includes bicycles carrying On-One and Titus names. For a clear view of this particular marque, the Planet X bicycle collection identifies families including Pro Carbon, EC-130, London Road, Tempest and Reiver. The retailer’s entire selection should therefore not be treated as one Planet X model range.
Two revealing sides of the range
Pro Carbon: continuity through changing road-bike designs
The Pro Carbon provides a useful thread through Planet X’s road-bike development. The manufacturer’s account of the model’s evolution describes the move from the original design to the Pro Carbon Evo, bringing disc brakes, internal cable routing and dropped seatstays. It also describes a subsequent redesign with increased tyre clearance.
For buyers comparing used and current examples, that history matters: a familiar model name can cover substantially different generations. Check the actual frame, brake system and tyre clearance of the bicycle being offered instead of assuming that every Pro Carbon shares the latest design.
Tempest: gravel riding with luggage options
The titanium Tempest gives the brand a different emphasis. The Tempest Apex AXS listing specifies a titanium frame, carbon fork, clearance for tyres up to 48mm on 700c wheels, and mounts for mudguards and panniers. Planet X positions it for gravel, road mileage and multi-day trips.
Those features make luggage requirements and surface choice useful comparison points alongside drivetrain equipment. A rider planning pannier-supported journeys has different priorities from someone choosing a road bike for predominantly paved outings. Explore the Planet X brand page with those needs in mind, then compare the exact build and size rather than relying on the family name alone.