BMC Roadmachine Four Road Bike Carbon/Grey (2021)
Up to 12 months interest free
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If you don't love it, you can swap it, up to 30 days from purchase!* Learn more »
Free Bike Build
We'll build your bike for free when you click and collect at any 99 Bikes store.
First Free Tune-up
Every bike comes with a complimentary free tune-up and safety check.
Please note that, in order to reduce production and delivery times, bike specifications are subject to change by the manufacturer without notice. Please be aware that these changes might not be reflected on product pages and images.
BMC Roadmachine Four
- 2x11 Speed Shimano 105 Drivetrain
- Premium Carbon Frame
- Shimano 105 hydraulic Disc Brakes
- Premium Carbon chassis and D-Shape seatpost
- Mavic Open Disc Rims
Team Member Review

"The Roadmachine is Swiss, it's fast and it gives you a ridiculously smooth ride all day long. It's built to be big on compliance and it really does deliver on that front, and for that reason it comes into its own on those longer rides "
– Mitch Sutton
The BMC Roadmachine Four is the go-to high performance road bike for the rider looking to go fast and ride all day. The Swiss designed carbon frame is a standout feature which the brilliance of the Roadmachine is built around. The Tuned Compliance Concept (TCC) improves vertical compliance by up to 25% for a silky smooth ride even on below average road surfaces. It uses ACE (Accelerated Composites Evolution) frame construction technology which delivered the ProTour-winning Teammachine SLR to minimise weight and maximise stiffness for agile acceleration and precision handling. It is equipped with a 2x11 speed Shimano 105 groupset for an incredibly swift and efficient ride, giving you a range of gears and control for any climb or descent.
The Mavic Open Disc Rims offer lightweight high-performance, helping you perform at your best for long periods of time. This bike is built to go fast and you’re going to need to control all of that speed, thankfully the Roadmachine is equipped with Shimano 105 Hydraulic Disc Brakes for excellent braking control in all conditions. The Swiss put a lot of effort into their design and concepts and it really shows on the Roadmachine. There may be a lot of technicalities to describe the Roadmachine, but what you really need to know is that it combines comfortable and efficient compliance with performance concepts that ensures this bike is built to fast and go all day long. This truly is one road bike to do it all.
About the BMC Roadmachine Range
The BMC Roadmachine is a versatile endurance machine which is comfortable even on the most gruelling rides. Recent improvements have been made to improve the range of this bike for comfortable climbing, descending and so that you can get in a swift and efficient rhythm on the flat. Already known for a super smooth ride, BMC have improved vertical compliance by a further 25% with its reinvigorated carbon frame, dropped seatstays and D-Shape seatpost. The improved compliance is matched by a stiffer bottom bracket and a 20% increase in frame lateral stiffness which ensures this bike is comfortable even when poor road surfaces mean it shouldn’t be. If you really want to take comfort to the max, BMC have created space for 33mm tyres so that you can smoothly roll on wide tyres for a crisp ride.
Shop The Roadmachine Range
Tuned Compliance
Take the edge off the roughest roads to push harder and ride further. The ultimate balance between comfort and performance for a ride that is both forgiving and fast.
D-Shape Seatpost
A new “D” compliance post is held in place by a clever, integrated clamping system.
Flatmount Adapter
The front disc hardware comes equipped with a 140/160mm proprietary flatmount bracket for maximal integration and seamless design.
SKU | BMC21RoadmachineFourCarbonGrey |
---|---|
Season | 2021 |
Sizing SKUs | XS: BMRC21000268, SM: BMRC21000269, MD: BMRC21000270, LG: BMRC21000271, XL: BMRC21000272, XXL: BMRC21000273 |
Click & Collect | Yes |
Frame | Roadmachine Premium Carbon with Tuned Complaince Concept Endurance, ICS Tech, PF86 BB |
Frame Material | Carbon |
Fork | Roadmachine Premium Carbon with Tuned Complaince Concept Endurance. ICS Tech, TCC Endurance compliance |
Fork Material | Carbon |
Speeds | 2 x 11 |
Front Gears | Double |
Groupset Brand | Shimano |
Groupset | Shimano 105 |
Rear Gears | 11 Speed |
Crankset | Shimano 105, 50-34T |
Chain | Shimano 105 |
Brake Type | Hydraulic Disc Brake |
Brakes | Shimano 105, SM-RT70 (160/160) |
Shifters | Shimano 105 |
Brake Levers | BOUR ROAD BIKE CARBON/G-SM |
Derailleur Front | Shimano 105 |
Derailleur Rear | Shimano 105 |
Cassette | Shimano 105, 11-32T |
Wheel Size | 700c |
Tyres | Vittoria Rubino, 28mm |
Rims | Mavic Open Disc |
Hubs | CL-712 (F)/RXC-1425 (R), Thru Axle |
Handlebar | BMC RAB 02, ergo top shape, compact bend |
Stem | BMC RSM01 |
Saddle | Fizik Taiga |
Seatpost | Roadmachine D-Shape Carbon, 15mm offset |
BMC Roadmachine Sizing Chart

Legend
ST Seat Tube
TT Top Tube
CS Chain Stay Length
HTA Head Tube Angle
STA Seat Tube Angle
BD Bottom Bracket Drop
HT Head Tube
FL Fork Length
R Reach
S Stack
WB Wheel Base
Size |
XS | SM | MD | LG | XL | XXL | Wheel Size | 700c | 700c | 700c | 700c | 700c | 700c | Frame Size | XS | SM | MD | LG | XL | XXL | ST Seat Tube (mm) | 420.0 | 457.0 | 500.0 | 522.0 | 539.0 | 573.0 | TT Top Tube (mm) | 522.0 | 532.0 | 546.0 | 556.0 | 568.0 | 583.0 | CS Chain Stay Length (mm) | 410.0 | 410.0 | 410.0 | 410.0 | 410.0 | 410.0 | HTA Head Tube Angle (°) | 71.2 | 71.2 | 72.0 | 72.0 | 72.0 | 72.0 | STA Seat Tube Angle (°) | 74.2 | 74.2 | 74.2 | 74.2 | 74.2 | 74.2 | HT Head Tube (mm) | 112.0 | 139.0 | 156.0 | 181.0 | 206.0 | 242.0 | R Reach (mm) | 374.0 | 382.0 | 386.0 | 390.0 | 394.0 | 398.0 | S Stack (mm) | 516.0 | 541.0 | 562.0 | 586.0 | 610.0 | 644.0 | WB Wheel Base (mm) | 982.0 | 999.0 | 997.0 | 1008.0 | 1020.0 | 1035.0 |