BMC 257 Urbanchallenge AMP AL ONE Disc Electric Hybrid Bike
Introducing the 257 AMP ONE, your ideal urban companion. Its sleek design and meticulous craftsmanship house a lightweight Premium Aluminium frame, partnered with a robust BOSCH Performance CX belt drive motor for a seamless, powerful ride. The 625 Wh battery ensures extended journeys between charges, while the Kiox display adds convenience through Bosch eBike Connect compatibility. Ride with style, safety, and efficiency in this urban masterpiece.
Stand out with the iconic Swiss Design of the 257 AMP ONE, embodying minimalism and functionality. Crafted for endurance, the Premium Aluminium and Powder Coating guarantee durability. Safety is paramount, with powerful built-in lights and StvZo Certification. The integrated fenders, rear carrier, and kickstands fuse practicality with elegance. Experience reliability through the belt drivetrain and integrated gear hub, offering a low-maintenance solution.
The 257 AMP ONE redefines urban commuting through a perfect blend of elegance and efficiency. With enduring construction, safety features, and seamless functionality, it offers an unmatched riding experience. Embrace this innovative urban e-bike and enjoy every journey knowing you have a reliable, stylish, and high-performing companion.
Technical Specification
| Frame | 257 Premium Aluminium Smoothwelded |
| Fork | 257 Premium Aluminium |
| Wheels | SR500/SHIMANO Alfine 8 hub |
| Tyres | Pirelli Angel GT - 37mm |
| Rear Derailleur | SHIMANO Alfine 8 |
| Shift Levers | SHIMANO Alfine 8 Rapidfire Plus |
| Brake Levers | SHIMANO BR-U300 - MT200 levers |
| Brakes | SHIMANO BR-U300 - MT200 levers / RT10 Rotors (180/180) |
| Chain | Belt GATES S55 |
| Cassette | GATES SUREFIT 3-LOBE UNIFIED CDX2 4T |
| Crankset | GATES S550 CDX 55T |
| Saddle | Selle Royal Vivo |
| Seatpost | Lightskin with Integrated Lights |
| Stem | MSM01 Stem |
| Handlebar | Lightskin with Integrated Lights |
| Pedals | Available to be purchased separately (or pedals if included) |
| Accessories | Fenders with Integrated Rack, Lights and Kickstand |
| Drive Unit | Bosch Performance Line CX |
| Drive Unit | Control |
| Display | Bosch Kiox |
| Battery Pack | Bosch PowerTube 625 Wh |
| Charger | Bosch Compact Charger |
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride. For hassle-free home delivery and bike set-up from a qualified mechanic use our Premier Delivery Service.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.
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Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
Save up to 47% with any one of our 11 Cycle to Work partners, and get the health benefits of a new bike in exchange for tax free salary sacrifice. To find out more about our various partners and how to apply click here.
Choose between Free Bike Delivery - to your home or place of work - or our new Premier Bike Delivery Service £99.99 and have your bike delivered "ready to ride" and set up to your measurements with seatpost and pedals adjusted on arrival by a qualified bike mechanic. Either way, our Customer Care team will be in touch to arrange a delivery date to suit you.
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