We use cookies to improve your experience on our website and to show you personalised content.
You can read our Cookie and Privacy policy or manage them individually.
You can read our Cookie and Privacy policy or manage them individually.
Description
Ideal for long, exploratory rides, sportives or Gran Fondos, BMC’s Roadmachine ONE Disc Road Bike is fast, efficient and comfortable.
The carbon layup used for the frame and fork has been specifically developed for compliance as well as power transfer, so that multi-hour epic can be tackled in comfort whilst the bike’s geometry also has a slightly less aggressive position. However, power transfer from the bottom bracket area is still excellent, so no watts are wasted. This in-built comfort is complemented by the 33mm tyre clearance and D-shaped seatpost which also helps reduce fatiguing road vibrations.
Now semi-wireless, Shimano’s 12-speed Ultegra groupset connects the shifters to the derailleurs without any wires, which helps keep the front end of the bike tidy and allows native connectivity to smartphones and GPS computers. Effortless shifts are actuated by a light press of the appropriate lever, no matter how much pressure is being applied to the pedals and the gearing is ideal for long or hilly routes thanks to the 50/34 chainset and 11-34 cassette. Braking is just as easy as changing gear, with the Ultegra Servo Wave hydraulic disc brakes providing excellent power and control.
Mid-depth carbon wheels, the very discreet seatpost clamp and the Integrated Cockpit Design not only look very smart but also help the bike slip through the air more easily.
Frame | BMC Roadmachine Premium Carbon with Tuned Compliance Concept Endurance, internal cable routing, flat mount disc, 12x142mm thru-axle |
Fork | BMC Roadmachine Premium Carbon with Tuned Compliance Concept Endurance, internal cable routing, flat mount disc, 12x100mm thru-axle, 50mm offset (Size 47-51), 45mm offset (Size 54-61) |
Bottom Bracket | PF86 |
Stem | BMC ICS1 - Integrated Cockpit Design |
Handlebar | BMC RAB 02, ergo top shape, compact bend |
Bar Tape | BMC |
Front Brake | Shimano Ultegra 8170 hydraulic disc brake caliper with Shimano RT-MT800 160mm rotor |
Rear Brake | Shimano Ultegra 8170 hydraulic disc brake caliper with Shimano RT-MT800 140mm rotor |
Brake Levers | Shimano Ultegra 8170 hydraulic |
Front Derailleur | Shimano Ultegra Di2 8150, 12-speed |
Rear Derailleur | Shimano Ultegra Di2 8150, 12-speed |
Shift Levers | Shimano Ultegra Di2 8150, 12-speed |
Chain | Shimano Ultegra, 12-speed |
Cassette | Shimano Ultegra CS-R8100, 11-34, 12-speed |
Crankset | Shimano Ultegra 8100 50/34 |
Front Wheel | BMC CRD-321 Carbon, 700c, 35mm depth, tubeless-ready |
Rear Wheel | BMC CRD-321 Carbon, 700c, 35mm depth, tubeless-ready |
Front Tyre | Vittoria Rubino, 28mm 700c, clincher |
Rear Tyre | Vittoria Rubino, 28mm 700c, clincher |
Saddle | Fizik Taiga |
Seatpost | BMC Roadmachine Premium Carbon D-Shaped Seatpost 15mm offset |
Pedals | Available to be purchased separately |
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.
Delivery & Returns
Reviews
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Q&A
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
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.
We've partnered with Laka to offer you 30 days free bike Insurance on your new bike purchase over £400. Click here for more info and find out how to claim.
Oh, dear. You tried too many passwords and now your account has been locked for the next 30 minutes.
Not sure of your password? Reset using the link below.
We've sent you an email to reset your password.
To create your new password, click the link in the email and enter a new one. Didn't receive the email? Check your junk email.
Please enter your registered email address below and we'll send you an email explaining the next step.
Select a store
Select the store you visit most frequently below and their stock information will show on product pages.
Important Update for Our US Customers
We regret to inform you that due to ongoing challenges related to current US tariffs, shopping on Sigma Sports is temporarily unavailable for customers based in the United States.
We understand how disappointing this may be and sincerely apologize for any inconvenience caused. Please rest assured that we are actively exploring solutions to resume service and find the best way to support our US community.
We appreciate your patience and understanding during this time, and we look forward to welcoming you back as soon as possible.
If you require any further assistance, please reach out to the customer services team
— The Sigma Sports Team