Croix De Fer 40 Large Adventure Bike – Reynolds 725 Tubing, Shimano GRX, All-Terrain Capable
Introducing the Croix De Fer 40 Large Adventure Bike, your ultimate companion for both rugged terrains and smooth roads. This modern classic is designed for those who seek durability, comfort, and versatility in their cycling adventures. Featuring Reynolds 725 tubing, this bike is built to go the distance while offering an exceptional ride quality.
At the core of the Croix De Fer 40 is its renowned Reynolds 725 tubing. Compared to regular chromoly, Reynolds 725 is thinner, making the bike lighter without compromising strength. This advanced tubing enhances the ride quality, providing a smooth and responsive experience whether you’re navigating city streets or tackling off-road challenges.
The Croix De Fer 40 doesn’t just excel in its frame construction; it’s also equipped with a top-tier gravel and adventure groupset. This includes a 46/30T chainset paired with Shimano GRX shifters and hydraulic brake callipers. This combination ensures reliable and precise shifting both on and off the road, allowing you to focus on your ride without worrying about performance issues.
One of the standout features of this bike is its versatile tyre clearance. It supports up to a 45mm rear tyre and a 50mm front tyre on 700c rims, enhancing its ability to handle various terrains. Additionally, the bike can accommodate 650B wheels with up to a 44mm rear tyre and a 50mm front tyre, providing even more flexibility for different riding conditions.
The Croix De Fer 40 is also designed with practical features for adventure enthusiasts. It comes with thru-axles front and rear for added stability, tubeless-ready rims and tyres for reduced punctures, and flat mount disc brakes for superior stopping power. For those long rides, the bike includes a third bottle mount, rack and guard mounts, and fixings for Anything Cages on the forks. These features make it an ideal choice for extended trips and carrying extra gear.
Features:
- PREMIUM STEEL FRAME: The Croix De Fer 40 Large features Reynolds 725 tubing, offering a lighter frame and superior ride quality. Ideal for long distances and rugged terrains.
- VERSATILE TYRE CLEARANCE: With the ability to fit up to 45mm rear and 50mm front tyres on 700c rims, or 44mm rear and 50mm front tyres on 650B wheels, this bike adapts to various surfaces.
- RELIABLE GROUPSET: Equipped with a 46/30T chainset, Shimano GRX shifters, and hydraulic disc brakes, ensuring smooth shifting and powerful braking on all terrains.
- ALL-TERRAIN READY: Tubeless ready rims and tyres, along with flat mount disc brakes, provide enhanced performance and durability in diverse conditions.
- EXTRA MOUNTS: Features a third bottle mount, rack and guard mounts, and Anything Cage fixings on the forks, making it versatile for long trips and adventures.
- THRU-AXLES: Front and rear thru-axles enhance stability and handling, crucial for off-road and loaded rides.
- COMFORTABLE RIDE: The refined gravel & adventure groupset ensures a comfortable ride whether on paved roads or rough trails.
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Bikes Delivery Information
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Fix This Bike is proud to be one of the few online bike retailers in the UK offering a delivery service that guarantees your bike arrives fully assembled and ready to ride. Our premier delivery option, ‘Bike & Ride,’ is available for just £70 per bike and ensures that your biking experience starts effortlessly and smoothly.
With ‘Bike & Ride,’ your new bike will arrive in a specially designed bike box with minimal packaging, ensuring protection during transit while reducing environmental impact. Included are all the necessary tools, so you can start riding within minutes of delivery. Our commitment to sustainability means we avoid using foam, bubble wrap, and zip-ties, opting instead for eco-friendly packaging. We encourage you to recycle any materials where possible, contributing to a greener planet and giving you the added satisfaction of making an environmentally responsible choice.
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For standard bikes, our ‘Bike & Ride’ service ensures that each bike undergoes meticulous assembly and rigorous quality checks by our expert bike builders. This attention to detail guarantees that your bike meets the highest standards of safety and performance. To facilitate this thorough process, bicycles are not eligible for next-day delivery, ensuring each bike is perfectly prepared for you.
Bike & Ride for E-Bikes
Due to the additional weight and unique handling needs of electric bikes, we cannot ship them fully assembled. Instead, our expert mechanics will assemble, configure, and thoroughly inspect your electric bike before repacking it in its original box. This process requires the removal of the front wheel, handlebars, pedals, and seat-post, which you will need to reinstall upon delivery. We provide detailed instructions and all necessary tools to help you complete the assembly quickly and effortlessly.
Experience the unmatched convenience and quality of ‘Bike & Ride’ by purchasing your bike from our online shop. With Fix This Bike, you’re choosing a service that prioritises your riding experience, environmental responsibility, and exceptional quality from the moment you receive your bike.

Next Day Delivery
To ensure proper assembly and quality assurance by our expert bike builders here at Fix This Bike, bicycles are NOT eligible for next-day delivery.
Bike Delivery Costs
- Standard Delivery: £25
- Bike & Ride Premier Delivery: £70
- Remote Delivery Surcharge: £20
Bike Handling
- Next Day Delivery: Unavailable due to our Quality Assurance Guidelines
- Order Processing & Dispatch: 1-3 Working Days
- Delivery Timeframe: 2-9 Working Days























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