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.
All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.
We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.
We've partnered with Pedalsure to offer you 30-DAYS FREE bike insurance on new bikes over £400. Visit our Cycle Insurance page to learn more and claim.
BMC 257 AMP AL ONE Disc Electric Hybrid Bike
Bring a boost to your urban rides with the BMC 257 AMP AL ONE Disc Electric Hybrid Bike. With tuneable suspension from the ICS MTT x Redshift suspension stem, comfort is dramatically enhanced, and the premium aluminium frame and fork are strong and durable thanks to the powder-coated finish.
Power is delivered by a Bosch battery and motor system that provides pedalling assistance up to 15.5mph (25km/hour). Engagement is smooth for a natural ride feel. Hydraulic discs ensure confidence-inspiring stopping power, and the Shimano Alfine 8-speed hub gears with belt drive deliver a range of gears and keep the system low maintenance. The bike rolls on well-built wheels fitted with Pirelli Angel GT tyres in a 37mm width, for bump-smoothing comfort, grip and puncture protection.
The bike is well equipped for all-condition riding, supplied with mudguards that have an integrated luggage rack, along with good quality lights and a kickstand.
- Lightweight and versatile premium aluminium frame with powder-coated finish for durability
- Naturally-engaging and powerful BOSCH Performance CX belt drive motor
- Comfort-enhancing ICS MTT x Redshift suspension stem - Integrated Cockpit Design
- Alfine 8-speed hub gears with belt drive
- Hydraulic disc brakes
- Battery Power: 625Wh
- Battery charger: Bosch compact charger
|Frame||BMC 257 AMP premium aluminium smooth welded, integrated battery, internal cable routing, powder coat finish, flat mount disc, 12x142mm thru-axle|
|Fork||BMC 257 premium aluminium, mudguard mounts, flat mount disc, 12x100mm thru-axle|
|Stem||BMC ICS MTT x Redshift Suspension Stem - Integrated Cockpit Design|
|Handlebar||BMC LSB 01|
|Front Brake||TRP hydraulic disc, 180mm rotor|
|Rear Brake||TRP hydraulic disc, 160mm rotor|
|Shift Levers||Shimano Alfine 8 Rapidfire Plus|
|Chain||Belt GATES 113 CDN|
|Cassette||GATES CDX 22T|
|Crankset||Miranda Classic x Bosch / Gates CDX 46T|
|Front Wheel||BMC-approved SR500 rim / CL-712 hub|
|Rear Wheel||BMC-approved SR500 rim / Shimano Alfine 8 hub|
|Front Tyre||Pirelli Angel GT, 700x37c clincher|
|Rear Tyre||Pirelli Angel GT, 700x37c clincher|
|Saddle||Selle Royal Vivo|
|Seatpost||BMC LSP 02|
|Pedals||Available to be purchased separately|
|Motor||Bosch Performance Line CX|
|Battery||Bosch PowerTube 625Wh|
|Charger||Bosch compact charger|
|Electric Assisted Speed Limit||15.5mph / 25km/h|
|Weight Limit (combined weight of bicycle, rider and cargo)||120kg|
|Accessories||Mudguards with integrated rack / lights / kickstand|
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.
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.