Mark2
Mark2 X Cross 450S Step Through Electric Bike 250W
Mark2 X Cross 450S Step Through Electric Bike 250W
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Available at checkout. T&Cs apply
X-Cross 450S Step-Through Electric Gravel Bike – Built for Comfort, Made for Adventure
Unleash your ride with the X-Cross 450S, a step-through electric gravel bike designed for cyclists who crave both comfort and off-road performance. Engineered with a rugged flat bar design and enhanced with premium components, this eBike is perfect for countryside exploration, gravel tracks, and hilly terrain — while remaining equally smooth on urban roads.
Equipped with a Shimano Tiagra 10-speed 11–32T cassette, Schwalbe G-One 4Season gravel tyres, and a high-torque Danish Promovec 250W motor, the X-Cross 450S offers improved climbing power, off-road grip, and responsive pedal-assist support. The 450Wh removable battery delivers a range of up to 100km, giving you the freedom to explore more without compromise.
Hand-built in Europe and fully prepared at the Mark2 workshop in Hampshire, the X-Cross 450S is crafted for reliability, performance, and all-day riding enjoyment.
What Makes the 450S Special?
- Step-Through Frame Design – Easy to mount, great for riders of all abilities
- Shimano Tiagra 10-Speed Gearing with 11–32T Cassette – Optimised for hill climbs and off-road performance
- 250W / 36V Promovec Rear Hub Motor (45Nm Torque) – Smooth, near-silent pedal assist for variable terrain
- 450Wh Smart Memory Battery – Removable, quick-charging, and capable of up to 100km range
- Schwalbe G-One 4Season Gravel Tyres – Designed for grip, control, and comfort on unpaved routes
- Added Bottle Cage – Stay hydrated on longer adventure rides
- Built in Europe, Finished in the UK – Mark2 workshop quality with local support
The X-Cross 450S Electric Gravel Bike brings together the best of flat-bar handling, step-through accessibility, and all-road versatility — making it the ideal choice for commuters, weekend explorers, and gravel adventurers alike.
Why Choose the Mark2 X-Cross?
- UK-based support & shipping
- European-built quality
- Classic MTB feel with modern eBike features
- Exceptional range & motor torque
- Ready for gravel, trails, and beyond
- Available in Medium 17" inch and Large 19" inch sizes
- Industry Leading Warranty (T&C apply) We offer a 3 year comprehensive transferable warranty against fault or failure covering the whole bike: Motor, Battery, Electrics and Cycle parts (which can be extended to five years). Refer Mark2 Warranty information page for more info
We also provide lifetime support. Contact us for more information on warranty
Specifications
Frame & Ride Comfort
- 45cm (17.7”) Lightweight 6061 Aluminium Alloy Frame – Durable, rust-resistant, and built for performance with a 5-year warranty
- Zoom Flat Alloy Handlebar – Delivers confident, upright control for both on- and off-road adventures
- Suntour XCM LO Suspension Fork – 63mm travel with manual lockout for comfort on gravel tracks, trails, or city streets
- 700x40 Schwalbe G-One 4Season RaceGuard Tyres – Puncture-resistant and all-season-ready, ideal for gravel and mixed terrain riding
- Lightweight Alloy Wheels with Front Quick Release – Easy transport and maintenance, built for rugged rides
- Selle Royal Lancia Saddle with Quick-Release Clamp – Plush comfort and easy adjustment for long-distance support
- Weight: 19.7kg (22.1kg with battery) – Lightweight design with full electric capability
- Rider Fit: Inside leg measurement 28"–35" (71–89cm), max load 120kg (18st 12lb) including luggage
- 250W / 36V Rear Hub Promovec Motor (45Nm Torque) – Delivers smooth, quiet assistance for climbs and endurance riding
- Walk Assist & Boost Throttle – Effortless push-off and uphill support at your fingertips
- Removable 460Wh (12.8Ah) Smart Memory Battery – High-capacity Li-ion pack, easily charges on or off the bike
- Range: Up to 100km (60 miles) depending on terrain, assist level, and rider weight
- Fast Charger Included – Recharges in 4–6 hours from empty
- 3-Year Motor & Battery Warranty – Includes 70% minimum capacity guarantee
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Integrated LED Lighting System
- Front: AXA Echo 30 Lux – Visibility up to 50 metres ahead
- Rear: AXA Slim Steady – Visible from 600 metres behind
- Backlit Mini LCD Display – Tracks speed, battery life, distance, and offers 4 assist levels
- Shimano Tiagra 10-Speed Derailleur & Cassette (11–32T) – Smooth, reliable gear changes on mixed gradients
- 44T Steel Chainring – Efficient power transfer for variable terrain
- Shimano Hydraulic Disc Brakes – 160mm front and rear rotors for reliable, responsive stopping power in all weather
- Alloy MTB Platform Pedals + Side Stand – Durable and trail-ready for everyday convenience
Product Video
Premium Full Build White Glove Delivery
🚲 Hassle-Free E-Bike Delivery – Ride-Ready & Right to Your Door!
Choose Our Premium Full Build White Glove Delivery – Just £160 per bike
✅ Ride-Ready E-Bike Delivery – No Assembly Required
Skip the tools and guesswork. For just £160, our White Glove Delivery service ensures your e-bike arrives fully assembled, tested, and ready to ride. No hassle, no headaches – just pure riding enjoyment from day one.
🧑🔧 Expert Delivery & Personalised Onboarding
Our experienced e-bike delivery specialists will contact you to arrange a delivery time that suits you. Upon arrival, they’ll walk you through your bike’s features, controls, and maintenance tips – and answer any questions you might have. It’s a concierge-style service designed to boost your confidence and peace of mind.
⏱️ Delivery Timeframe: Fast & Worth the Wait
While this premium delivery option may add 3–5 extra days (depending on demand), the convenience, safety, and expert setup are well worth the wait. Forget the hassle of incorrect assembly or missing parts – we’ve got it all covered.
🌱 Eco-Friendly Packaging Removal
We don’t just drop off your bike – we also remove and recycle all packaging for you, reducing waste and your environmental impact. It’s part of our commitment to sustainable e-bike delivery.
Click here to add Premium Full Build White Glove Delivery.
⚠️ Important Note:
Our White Glove Delivery service is available in select areas (highlighted in green on our delivery map) for an additional £160 per bike.
Please contact us for the Orange and Yellow areas delivery
Why Buy From Us
Every purchase is truly matters to us. That's why we're dedicated to guiding you through every step of your buying journey and we want you to feel completely confident and satisfied with your purchase.
- Excellent customer support, we aim to reply to our customer queries within 4-6 hours.
- Our carefully curated selection features only the highest quality products from top manufacturers.
- We’ll always strive to give you the best price—let us know if you find a better deal elsewhere.
- Every purchase comes with a manufacturer's warranty, providing you with peace of mind.
- Enjoy fast shipping, free on orders over £500, with regular updates on delivery times and hassle-free returns within 14 days.
- We offer a variety of payment options to suit your needs
With our dedication to exceptional customer care, you can trust that you are making a smart choice for your transportation needs.
Don't hesitate, order now and allow us to assist you on your journey.
Delivery and Returns
Enjoy fast shipping, free on orders over £500, with regular updates on delivery times. Please contact us for the site preparation information.
If you would like to return your product, please contact us at info@bikenfitness.com and we will be happy to support. Please refer to our Delivery & Return policy for more information
Have any questions? Please refer to our FAQs or
Let customers speak for us
This bike is stylish, comfortable, and the 250W motor makes every ride effortless. Battery life is great, and it handles both city roads and light trails with ease. Bike N Fitness made the whole process simple - the website was easy to use, and the team was super helpful. Highly recommend both the bike and the store!
Outstanding customer support and expertise! The team at Bike N Fitness truly knows their e-bikes and takes the time to guide you through every detail. Their advice is clear, professional, and tailored to your needs, making the whole process stress-free. If you’re looking for knowledgeable support and a trusted place to buy e-bikes in the UK, this is it!
Bike N Fitness offers an outstanding online experience for anyone looking to buy e-bikes in the UK. The website is beautifully designed, easy to navigate, and features a premium electric bike collection with great offers.
I really liked this bike! The design is excellent, very comfortable, and feels smooth to ride. Great value for money and highly recommended for anyone looking for a reliable electric bike.
I recently bought the Claud Butler Wrath 2.0 Cues Electric Mountain Bike 2025 (250W), and it has exceeded every expectation I had—and then some! This bike is the perfect fusion of rugged mountain biking capability and smooth electric power assistance.
First off, the 250W motor is a dream. It gives you just the right amount of boost when you need it most—whether you're climbing steep trails, navigating uneven terrain, or just cruising through long rides without tiring out. The power delivery is smooth and intuitive, and it never feels jerky or overwhelming. It's the perfect assist for both beginners and experienced riders alike. The build quality is impressive.
I’ve taken it on forest trails, gravel paths, and even a few rocky hills—and it handles it all like a pro. The gearing system is smooth, giving you a lot of flexibility whether you’re pedaling manually or using the pedal assist. Battery life is excellent too—I easily get multiple long rides on a single charge.
Lastly, huge credit to the "Bike N Fitness" store where I bought it. They were incredibly helpful and knowledgeable. They helped set the bike up perfectly for my height, offered helpful riding tips, and even gave me a discount on accessories like a helmet and lock.
If you're looking for a dependable, exciting, and stylish e-MTB, the Claud Butler Wrath 2025 is absolutely worth it. It’s turned every ride into an adventure—and I can’t recommend it enough!
Bike n Fitness offers an impressive range of products that cater to cycling enthusiasts. Their website is well-designed, intuitive, and makes browsing and purchasing effortless. The collection is carefully curated with excellent quality, and their pricing remains highly competitive. Shan is really helpful and thorough in answering questions. A truly professional and reliable online shopping experience.
