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 M20i Disc Gravel Bike 2021
Ultimately versatile, the Orbea Terra M20i Disc Gravel Bike provides a stimulating but composed character across a vast sweep of surfaces. Whether exploring deep into uncharted territory across gravel paths or battling the elements during winter road rides, the Terra offers a masterly performance thanks to its meticulous design and advanced materials.
A premium grade of carbon is utilised within a monocoque configuration to result in a frameset that is light, lively and resilient. The cleverly sculpted tube profiles promote stiffness for efficient power transfer but compliance for comfort across even the roughest of routes. At the same time, a well-balanced geometry puts the rider in a powerful position for climbing but also grants control across loose surfaces and when descending.
The Fulcrum Rapid Red 900 wheelset is robust and reliable across irregular surfaces while also providing a lively sensation for when surging uphill. The partnering Vittoria tyres complement by granting traction and confidence across a multitude of surfaces. Shimano 11-speed gears and a double chainring set-up enable any landscape to be conquered before the stiff chainset affords instant power transfer when stomping on the pedals. A hydraulic disc brake configuration completes by bestowing confidence-inspiring stopping power within technical riding situations or inclement weather.
- 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
- Fulcrum Rapid Red 900 wheelset is robust but reactive
- Shimano RD-RX815 11-speed gears are precise and reliable
- Double front chainring configuration offers a vast range of gear ratios
- Shimano BR-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 BR-RX810, hydraulic disc|
|Rear Brake||Shimano BR-RX810, hydraulic disc|
|Brake Levers||Shimano BR-RX810, hydraulic disc|
|Front Derailleur||Shimano FD-RX815|
|Rear Derailleur||Shimano RD-RX815, 11-speed|
|Shift Levers||Shimano ST-RX815, 11-speed|
|Cassette||Shimano Ultegra HG800 11-34t, 11-speed|
|Crankset||Shimano GRX RX810, 31x48 tooth chainrings|
|Chain||Shimano HG 601, 11-speed|
|Front Wheel||Fulcrum Rapid Red 900 DB with Orbea thru-axle 12x100mm M12xP1.5 hollow hub compatibility|
|Rear Wheel||Fulcrum Rapid Red 500 DB with Orbea thru-axle 12x142mm M12xP1.5 hollow hub 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|
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 specified), 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. We do not install accessories to bikes, including mudguards.
Orbea Terra M20i Disc Gravel Bike 2021 Sizing
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