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 Roadmachine FOUR Disc Road Bike
A fun and effective combination of SRAM components and a BMC frameset, the Roadmachine FOUR Disc Road Bike is for riders who want to take on long, arduous rides in comfort without sacrificing speed and performance.
The frame uses BMC’s Tuned Compliance Concept Endurance carbon layup to carefully marry together the requirements of comfort and performance, ensuring that the frame is compliant enough for rough tarmac and sufficiently stiff to transfer all power efficiently to the rear wheel. At the front end, the Integrated Cockpit System (ICS) has a neat reverse front plate stem and ergonomic handlebar whilst at the back, the D-shaped carbon seatpost adds further compliance to the ride. Cables are routed internal once they reach the frame to keep them out of harm’s way and to help reduce drag.
Effortless and electronic, SRAM’s Rival eTap AXS groupset provides perfect shifts with just a light press of the lever. The system is fully wireless so there are no cables to stretch or become dirty, so every shift is as good as the first and very little maintenance is required. Connection to a compatible GPS device via Bluetooth allows battery levels and gear selections to be shown, and SRAM’s AXS smartphone app gives the potential to customise certain shifting functions. X-Range gearing uses smaller chainrings in conjunction with a 10-tooth rear sprocket to give a wide range of gears but makes it easier to maintain optimal cadence by reducing the jumps between ratios.
BMC’s own-brand XR-522 wheels are tubeless-ready, so can be set up to benefit from lower rolling resistance, more grip and comfort as well as fewer punctures. Furthermore, at just 25mm deep handling will always be assured and confidence-inspiring whatever the weather and wind direction.
- BMC Roadmachine premium carbon disc frame and fork
- SRAM Rival eTap AXS 12-speed wireless groupset
- SRAM Rival eTap AXS HRD hydraulic disc brakes
- BMC XR-522 wheelset and Vittoria Rubino 28mm tyres
- 33mm tyre clearance
|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||SRAM PF86|
|Handlebar||BMC RAB 02, ergo top shape, compact bend|
|Front Brake||SRAM Rival eTap AXS HRD hydraulic disc, Centerline X rotor (160mm)|
|Rear Brake||SRAM Rival eTap AXS HRD hydraulic disc, Centerline X rotor (160mm)|
|Brake Levers||SRAM Rival eTap AXS HRD|
|Front Derailleur||SRAM Rival eTap AXS|
|Rear Derailleur||SRAM Rival eTap AXS, 12-speed|
|Shift Levers||SRAM Rival eTAP AXS HRD, 12-speed|
|Chain||SRAM Rival, 12-speed|
|Cassette||SRAM Rival XG-1250, 10-36t, 12-speed|
|Crankset||SRAM Rival AXS, 46-33t, 12-speed|
|Front Wheel||BMC XR-522 25mm, tubeless-ready|
|Rear Wheel||BMC XR-522, 25mm, tubeless-ready|
|Front Tyre||Vittoria Rubino, 700x28mm, clincher|
|Rear Tyre||Vittoria Rubino, 700x28mm, clincher|
|Seatpost||BMC Roadmachine premium carbon D-shaped, 15mm offset|
|Pedals||Available to be purchased separately|
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.