Felix Cycles guides cyclists from plan to departure: route advice, expedition preparation, converting your bike for long-distance travel, and professional packing for air travel.
For the cycling industry, Felix Cycles designs industrial prototypes — from geometry and frame construction to the complete ride-ready concept.
Together with local artists, we transform frames into riding works of art.
Work
The bicycles below were designed, built and produced in our own workshop. Our focus has since shifted to industrial prototype design — from geometry and frame construction to the complete finished concept.
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix CyclesThe Nomad Trekking is a robust, low-maintenance expedition machine. The drivetrain pairs a Rohloff Speedhub 500/14 with a Gates Carbon Drive — silent, grease-free, and built for the long haul. Stopping power comes from Shimano Deore XT hydraulic disc brakes. A Fox Racing Shox suspension fork and Canyon S15 VCLS 2.0 27.2mm CF seatpost handle rough terrain, while Schwalbe Marathon Mondial 50-622 — virtually puncture-proof — provide grip across any surface. The cockpit is finished with a Ritchey setup. Luggage is handled by a Tubus rear rack. Power comes from a SON 28 dynamo hub feeding a Forumslader V6 integrated in the frame — converting dynamo output to USB charge at any speed, with cable routing through a Cinq5 Expander keeping things clean. Via Bluetooth, the Forumslader connects to a companion app (iOS/Android) logging speed, distance, altitude, gradient and battery data. A Connect IQ datafield is available for Garmin computers. GPS track recording requires a separate device.
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix CyclesThe Titanium-Look Expedition is the ultimate low-maintenance travel machine. The frame is a high-grade Columbus Zona steel, bead-blasted and immediately powder-coated with a transparent varnish — giving it the raw industrial look of titanium while retaining steel's superior vibration damping. The drivetrain pairs a Rohloff Speedhub 500/14 with a Gates Carbon Drive belt: a closed, oil-bath gear system with a grease-free belt that stays silent and efficient through dust, mud, and thousands of kilometres. Braking is handled by Shimano Deore XT hydraulic disc brakes. For maximum grip on unpaved terrain, the bike runs wide Maxxis Ikon 29 x 2.35 tyres. Comfort comes from an Ergotec PM-705N parallel-suspension seatpost and a Surly Moloko handlebar offering multiple hand positions. The headset is a Cane Creek 40 EC ensuring precise, play-free steering. The expedition setup is completed by a Tubus Logo rear rack and Surly Nice Rack at the front with three horizontal rails, plus SKS Bluemels fenders for all-weather readiness. Power is provided by a SON 28 dynamo hub, feeding the SON Edelux II headlight and a Forumslader V6 integrated into the headtube — converting dynamo AC power to stable USB charge at any speed, with cable routing through a Cinq5 Expander keeping the cockpit clean. Via Bluetooth, the Forumslader connects to a companion app (iOS/Android) logging speed, distance, altitude, gradient and battery data. A Connect IQ datafield is available for Garmin computers. GPS track recording requires a separate device.
© Felix Cycles
© Felix CyclesThe Felix GRX Di2 Gravel is engineered around a custom lightweight steel frame paired with a Ritchey WCS Carbon Gravel fork. The frame utilizes a stress-free endurance geometry, characterized by an increased stack height and a stabilized wheelbase to optimize long-distance ergonomics and reduce skeletal strain. For expanded utility, the frame includes integrated mounting points specifically designed for a Racktime rear rack system. The drivetrain consists of a Shimano GRX Di2 electronic 2x11 groupset, providing programmable, high-torque shifting. Gearing is configured with Shimano GRX 48/31T double chainwheels and an 11-34T cassette, offering a wide-ratio spread suitable for both technical inclines and high-cadence road sections. The cockpit and seating utilize a professional PRO Vibe finishing kit, featuring a PRO Vibe stem and handlebar for maximum front-end stiffness, complemented by a PRO Vibe Carbon seatpost — which functions as the dedicated internal housing for the Di2 battery, ensuring the electronic system remains entirely concealed within the frame architecture. The braking system is enhanced with Shimano GRX parallel sub-brake levers (BL-RX812) mounted on the handlebar tops, providing secondary hydraulic access from an upright position. The rolling stock features Shimano GRX gravel-specific wheels mounted with WTB Byway TCS Light 700 x 44c tires — a slick centerline for minimized rolling resistance on pavement, transitioning to a diamond-textured shoulder for mechanical grip on loose surfaces.
© Felix CyclesThe Illusion Malbec Gravel is a study in contrasts — handcrafted steel meets flagship electronics. The frame is finished in a deep Illusion Malbec powder coat that shifts from dark bordeaux to bright metallic red under changing light. Internal cable routing keeps the lines clean from headtube to dropout. The drivetrain is a Shimano Ultegra R8050 Di2 11-speed with a FSA 48/32T crankset and wide-range cassette — tight gear steps for both fast tarmac and loaded climbs. The wheel build uses FSA carbon rims with Pirelli Cinturato Gravel tyres on tan walls, combining low rolling resistance with grip on unpaved surfaces. Hydraulic disc brakes complete the setup.
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix CyclesThis high-performance road build features the revolutionary Classified Powershift system integrated into a Classified CF R50 carbon wheelset, eliminating the front derailleur while maintaining a full 2x gear range. The wireless two-speed internal hub delivers instantaneous 150ms shifts — even under a full 1000-watt load — providing the aerodynamic efficiency of a 1x silhouette with the versatile gearing of a traditional setup. Seamlessly connected to a Shimano Ultegra Di2 12-speed groupset, the system is controlled directly through the electronic shifters for a clean, integrated, and cable-free cockpit experience. The 50mm deep-section carbon rims are optimized for maximum power transfer and stability, making this machine an ultra-reliable and weatherproof solution for high-speed road cycling. By merging precision electronic shifting with specialized aero engineering, this build represents the state-of-the-art in modern drivetrain technology without compromise.
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix CyclesThe Felix Endurance is a performance-focused build, balancing modern speed with classic reliability. At its heart is a full Shimano 105 R7000 2x11-speed groupset, featuring a 50-34T compact crank and an 11-32T cassette to provide a versatile range for both steep climbs and fast flats. For consistent stopping power in all weather conditions, the build utilizes Shimano 105 R7070 hydraulic disc brakes. The geometry is optimized for long-distance stability, utilizing a higher stack and shorter reach to reduce spinal strain and a slacker head angle for enhanced vibration damping. The bike rolls on durable, tubeless-ready Fulcrum Racing 600 DB wheels paired with Schwalbe Pro One 28c tires, selected for their low rolling resistance and high puncture protection. To complete the build, a full Ritchey Comp finishing kit — including the stem, handlebars, and seatpost — offers an optimal balance of lightweight engineering and long-term durability.
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix CyclesThe Magma Trekking is a balanced endurance build designed for long-distance reliability. At its core, the Rohloff Speedhub 500/14 provides a 526% gear range within a sealed, weather-protected system, paired with a Gates Carbon Drive CDX for a quiet, grease-free drivetrain. The chassis features a steel fork for natural vibration damping, complemented by a classic Brooks Flyer sprung saddle for long hours on the road. Braking via Tektro MD-C550 dual-piston mechanical disc brakes — reliable and all-weather. The bike rolls on Ryde Edge rims with WTB Byway 44-622 black folding tyres and a Tubus Logo Classic rear rack for stable load carrying. A black SON 28 dynamo hub feeds a Forumslader V6 in the headtube — providing stable USB charge at any speed, with cable routing through a Cinq5 Expander. Via Bluetooth, the Forumslader logs speed, distance, altitude, gradient and battery data to a companion app (iOS/Android). Connect IQ datafield available for Garmin. GPS track recording requires a separate device.
© Felix Cycles
© Felix CyclesThe Ironhorse is a heavy-duty long-distance machine with a proven track record — this exact build has covered over 10,000 kilometres across Europe and Africa. The frame features an integrated rear rack brazed directly into the steel structure, eliminating the flex and failure points of bolt-on alternatives. The drivetrain centres on a Shimano XT FC-T8000 triple crankset with a 48/36/24T configuration paired with a 10-speed 11-36T XT cassette — 30 gears covering everything from loaded Alpine passes to flat-road cruising. Shifting via Shimano XT Rapidfire Plus shifters with long-cage rear and dual-pull front derailleur. Pedals are Shimano XT SPD platform (PD-T8000) — recessed cleat for walkability, broad platform for unclipped riding. Braking is a deliberate step above standard: Hope Tech 3 E4 four-piston hydraulic disc brakes in gold anodising, paired with Hope floating 203mm rotors that actively dissipate heat on long loaded descents. Wheels are Hope 20Five rims, 32-hole tubeless-ready, on orange Hope Pro 5 hubs. The headset is a Hope EC34/28.6 in orange. Tyres are Schwalbe Marathon Mondial 700×50c — virtually puncture-proof, engineered for loaded touring across tarmac, gravel and dirt.
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix CyclesA custom trekking machine built around a Rohloff Speedhub 500/14 paired with a Gates Carbon Drive CDX and Gates anodised crankset — silent, oil-free, and maintenance-free. Braking via Paul Component Engineering Touring Cantilevers mounted to Jones H-Bars. The wheelset features Ryde Andra 30 rims laced with Sapim spokes, rolling on WTB Byway 700x34 TCS tan wall tyres. Finished with Honjo fenders from Tokyo, a Tubus Logo rear rack and a Brooks Flyer saddle.
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix Cycles
© Felix CyclesThe Emerald is a travel-oriented expedition build for riders who cover long distances across any surface. The classic steel frame — finished in British Racing Green — is paired with a Ritchey Carbon Gravel fork for a light, responsive front end. The drivetrain is a Shimano 3×10 — Deore crankset, XT derailleurs, 11-36T cassette — wide-ranging, mechanically simple, and field-serviceable anywhere. Wheels are Hope 20Five rims on orange Hope Pro 5 hubs, with Hope Tech 4 E4 four-piston hydraulic disc brakes in orange-black and a Hope ZS44/28.6 headset carrying the orange theme through. Tyres are Schwalbe Marathon Mondial Evolution — engineered for expedition use on tarmac, gravel and rough tracks. Saddle is a Brooks B17 Special in black. British Racing Green and anodised orange — anything but understated.
Frame Art
Frame Art is a collaboration between Felix Cycles, local artists, and Oxford Bikes in Sint-Niklaas (B), sponsored by Montana — MTN. Every frame is a blank canvas: no two are alike, and no artist works the same way. Once the artwork is complete, the frame goes through the powder coating process — baked, sealed, baked again — ensuring the work stays intact for the long term. Frame Art is also part of how we build the complete picture: a deep understanding of finishes, colour, surface preparation and coating quality that feeds directly into every frame we design. The result is a bicycle that performs on the road and holds its own as a piece of art — built to the same standard as everything else we do.
The Work
Workshop
We design frames and ride them — across the world. After years of frame building and thousands of kilometres in the saddle, we know what a bicycle needs to perform far from home.
Felix Cycles offers repair and maintenance for touring and trekking bikes — drivetrain overhauls, brake and gear adjustments, wheel truing and general servicing.
Before a long trip, preparation matters. We go through a standard checklist before every expedition — fresh cables, worn chain replaced, all bolts torqued, wheels trued, tyres inspected. We can prepare your bike for a bikepacking trip, or walk you through the process so you can do it yourself next time.
Flying with your bike? We pack your bicycle professionally for air transport — protected, within airline dimensions, ready to fly from Zaventem (Brussels Airport) or any other airport. We also guide you through reassembly on arrival.
Planning a tour? We offer practical advice based on long experience cycling in Europe, Africa and Asia — what to pack and how to pack it, GPX navigation and route planning, and safety on the road. No theory, just what works.
We would love to share our passion and experience with you — get in touch.
Process
We design industrial prototypes for the bicycle industry — from initial briefing through to a complete production-ready dossier. Our background in frame building and expedition cycling means every design decision is grounded in real-world mechanical knowledge.
Every project starts with a structured briefing: what type of bicycle, for which market, price segment, and rider profile? What groupset, wheelset and tyre clearance are specified? These decisions define the envelope within which the frame must perform.
With the product definition fixed, frame geometry is developed in BikeCAD. Stack, reach, standover, head tube angle, seat tube angle, BB drop, chainstay length and trail are calculated in relation to each other and to the intended component spec. For expedition and long-distance designs, stability and load-carrying behaviour are weighted heavily. For performance or urban prototypes, stiffness-to-weight ratios and handling responsiveness drive the geometry. The output is a fully dimensioned geometry sheet.
© Felix Cycles
Tube selection follows from the geometry and intended use. Diameter, wall thickness and butting profile are chosen per tube — down tube, top tube, seat tube, head tube, stays — based on the load path through the frame. Columbus CrMo steel is the reference material: consistent mechanical properties, excellent weldability, and well-understood fatigue behaviour. Double- and triple-butted profiles reduce weight at low-stress zones while maintaining section modulus at critical junctions.
The final deliverable is a complete production-ready dossier: fully dimensioned drawings with all tube lengths, miter angles, junction coordinates and jig setup data. Component specifications, thread standards, dropout dimensions and clearance tolerances are included. The dossier is structured for direct transfer to a production facility — whether a Taiwanese manufacturer, a European workshop, or an in-house prototype line. Nothing is left to interpretation on the factory floor.
© Felix Cycles
Get In Touch
Whether you need advice on an upcoming trip, want a custom frame, or just want to talk bikes — drop a message. Happy to help.
