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.
Orbea Terra M20 Disc Gravel Bike 2021
Promoting a multifaceted character, the Orbea Terra M20 Disc Gravel Bike is the perfect partner when traversing the unbeaten path while exploring deep into the wilderness. An in-depth collaboration between an advanced design, sophisticated materials and reliable components ensures the Terra delivers across a gamut of surfaces with aplomb.
The frameset utilises the finest carbon composition and is realised in a lightweight monocoque form to bestow stiffness and efficiency for when punching up the steepest of ascents. The tube sections are explicitly sculpted in line with zonal requirements to afford torsion resilience but also lateral compliance for sublime levels of comfort. Realised via a size-specific geometry concept, the frame benefits all riders by bestowing composed but nimble handling characteristics regardless of their size.
The Blackjack Ready GR wheelset is durable and dependable even when confronted with heavily rutted paths while the partnering Vittoria tyres offer grip across a broad scope of surfaces. At the same time, a Shimano 11-speed cassette and double chainring configuration ensures that any topography can be traversed with ultimate composure thanks to the resulting array of gear ratios. Hydraulic disc brakes complete a comprehensive two-wheeled companion by awarding smooth and modulated stopping power to grant confidence in the most technical of riding scenarios or the most inclement of weather conditions.
- A super-versatile gravel bike that also performs admirably on the road, in cyclocross, during winter training or when commuting
- Full Orbea monocoque carbon frameset is light, precise and durable
- Optimised frame tube shapes offer stiffness, compliance and comfort across any surface
- Wide tyre clearance allows the use of different tyre widths to suit the terrain
- Integrated mudguard mounts offer all weather protection
- Size-specific frame tube sections and a finely tuned geometry grant control and balance across dirt tracks, gravel paths and roads
- Blackjack Ready GR wheelset is robust but reactive
- Shimano RX810 11-speed gears are precise and reliable
- Double front chainring configuration offers a vast range of gear ratios
- Shimano RX810 hydraulic disc brakes offer powerful and modulated stopping power
|Frame||Orbea Terra carbon OMP disc, monocoque construction, tapered 1-1/8" - 1,5", PF30, power meter compatible, thru-axle 12mm x 142mm rear, thread M12x P1.5, internal cable routing, EC/DC compatible, SP 27.2mm|
|Fork||Orbea Terra OMP carbon disc fork, full carbon steerer, tapered 1-1/8" - 1,5", carbon dropouts thru-axle 12mm x 100m, thread M12xP1.5, MMS system|
|Headset||FSA 1-1/8 - 1-1/2" Integrated Carbon Cup ACB bearings|
|Stem||Orbea OC2 Road -8º|
|Handlebar||Orbea OC1 All Road, reach 80mm, drop 125mm, flare 12º|
|Front Brake||Shimano RX810, hydraulic disc|
|Rear Brake||Shimano RX810, hydraulic disc|
|Brake Levers||Shimano RX810, hydraulic disc|
|Front Derailleur||Shimano GRX RX810|
|Rear Derailleur||Shimano RD-RX810, 11-speed|
|Shift Levers||Shimano ST-RX810, 11-speed|
|Cassette||Shimano Ultegra HG800 11-34t, 11-speed|
|Crankset||Shimano GRX RX810, 31x48 teeth chainrings|
|Chain||KMC X11-EL, 11-speed|
|Front Wheel||Blackjack Ready GR with 12mm E-Thru Shimano RS470 28H hub, 12x100mm M12xP1.5 hollow thru-axle compatibility|
|Rear Wheel||Blackjack Ready GR with 12mm E-Thru Shimano RS470 28H hub, 12x142mm M12xP1.5 hollow thru-axle compatibility|
|Front Tyre||Vittoria Terreno Dry Gravel G2.0 TNT 700x38c, tubeless-ready|
|Rear Tyre||Vittoria Terreno Dry Gravel G2.0 TNT 700x38c, tubeless-ready|
|Saddle||Prologo Akero AGX STN, size 155mm|
|Seatpost||Orbea OC2 27.2 Offset 20|
|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.