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.
Obrea Terra M20i Team Gravel Bike
Crafted specifically for gravel exploration, Terra is not a repurposed road or mountain bike but a purpose-built adventure machine designed from scratch. Whether you seek to enhance comfort on road escapades, uncover new dirt trails, or embark on extended overnight trips, Terra is your steadfast companion, ready to traverse the wide world alongside you. The Orbea Terra carbon OMR Disc frame, featuring monocoque construction and Thru Axle 12x142mm rear, ensures durability and stability, complemented by the full carbon Orbea Terra ICR fork for precise handling. Equipped with Shimano GRX drivetrain components like the RX820 crankset and Ultegra R8100 shifters, Terra promises smooth and reliable performance, while the Shimano RX820 hydraulic disc brakes offer consistent stopping power. With Oquo Road Control RC25TEAM wheels and Vittoria Terreno Dry CX-Gravel G2.0 TNT tires, Terra delivers traction and control on diverse terrain. Plus, the OC Performance XP10 Carbon seatpost and Prologo Akero AGX STN saddle provide comfort for long rides, making Terra the ultimate gravel exploration companion.
Images for display purposes only, not true to spec.
Technical Specification
| Frame | Orbea Terra carbon OMR Disc, monocoque construction, HS 1,5", PF30, powermeter compatible, Thru Axle 12x142mm rear, thread M12x2 P1, Internal Cable Routing, LOCKR service box |
| Fork | Orbea Terra ICR, full carbon, 1-1/8" - 1,5" tappered head tube compatible, Thru axle 12x100mm, thread M12x2 P1 |
| Headset | FSA 1-1/2" Integrated Aluminium Cup |
| Drivetrain Crankset | Shimano GRX RX820 31x48t |
| Shifters Cassette | Shimano Ultegra R8100 11-34t 12-Speed |
| Rear Derailleur Front Derailleur Chain | Shimano M7100 |
| Cockpit Handlebar | Easton EC90 AX Carbon, flare 16º, Di2 internal routing |
| Stem | OC Road Performance RP10, -8º |
| Brakes Brakes | Shimano RX820 Hydraulic Disc |
| Brakes Configuration Wheels | Oquo Road Control RC25TEAM |
| Tyres | Vittoria Terreno Dry CX-Gravel G2.0 TNT 700x38c |
| Front Wheel Axle | Orbea Thru Axle 12x100mm M12x2 P1 Solid |
| Rear Wheel Axle | Orbea Thru Axle 12x142mm M12x2 P1 Solid inner threaded |
| Components Seatpost | OC Performance XP10 Carbon, 27.2mm, Setback 0 |
| Saddle | Prologo Akero AGX STN size 155mm |
| Accessories Handlebar Tape | Orbea Anti-Slippery/Shock Proof |
| Storage Accessories Containers | |
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. 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.
Orbea Terra M20i Team Gravel Bike Sizing
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