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.
Orbea Oiz M20 TR Mountain Bike 2021
Starting with a cross-country racing pedigree but adding increased amounts of suspension, front and rear, the Orbea Oiz M20 TR Mountain Bike delivers the speed and composure to conquer any trail of any technicality with consummate ease.
A lightweight OMR carbon mainframe is amalgamated with a refined alloy rear triangle to deliver high amounts of responsiveness and robustness. These two frame components are neatly joined with Orbea’s refined UFO suspension design that reduces pivot points to heighten stiffness and aids the FOX damping unit in granting smooth and plush levels of cushioning. The FOX 34 Float SC Performance fork adds increased trail composure thanks to its 120mm of progressive travel. An aggressive chassis geometry infuses nimble handling and also positions the rider ergonomically to deliver an efficient pedal stroke.
DT Swiss X-1900 Spline alloy wheels and their 29” rim circumferences are solid performers and increase rolling momentum regardless of terrain severity. The SRAM GX Eagle gear setup changes without fault every shift and the Shimano hydraulic disc brakes stop with composure, even in the wettest and muddiest of conditions. A dropper post crowns the build by allowing heightened control when tackling the trickiest of descents.
Highlights
- The Oiz TR takes a thoroughbred XC racing platform and adds bigger suspension, front and rear to create a super-fast and nimble character that is set to conquer any trail
- A lightweight OMR carbon mainframe with an alloy rear triangle delivers efficiency, stiffness and strength
- UFO rear suspension design reduces pivot points and combines with the innovative alloy linkage pattern to deliver lateral stiffness and a composed action
- FOX i-line DPS Performance rear shock with 120mm of suspension progressively manages even the largest of impacts
- FOX 34 Float SC Performance fork increases line accuracy and control with its 120mm of metered travel
- The geometry is aggressive and precise for maximum power transfer and rapid handling
- DT Swiss X-1900 Spline 25c 29” alloy wheels are stiff, strong and light
- SRAM GX Eagle gears change without fault and are durable
- Shimano hydraulic disc brakes are powerful and modulated regardless of riding conditions
- A dropper post is added to aid control on the most technical downhill sections
Technical Specification
| Frame | Orbea Oiz Carbon OMR main frame, AlloyLink rear triangle, Boost, BB92 PF bottom bracket, Taper UFO2, I-Line shock |
| Fork | FOX 34 Float SC Performance, 120mm travel, Grip Remote Push-Unlock, QR15x110 |
| Rear Shock | FOX i-line DPS Performance, 120mm travel, Remote Push-Unlock, Evol custom tune, 190x45mm |
| Headset | Acros Alloy 1-1/8 - 1-1/2" Integrated |
| Stem | Orbea OC1, 31.8mm interface, -7 degree (Length |
| Handlebar | Orbea OC1 Flat, 31.8mm diameter, 740mm width |
| Front Brake | Shimano XT M6100, hydraulic disc |
| Rear Brake | Shimano XT M6100, hydraulic disc |
| Brake Levers | Shimano XT M6100, hydraulic disc |
| Rear Derailleur | SRAM GX Eagle Lunar, 12-speed |
| Shift Levers | SRAM GX Eagle Lunar, 12-speed |
| Chain | SRAM GX Eagle, 12-speed |
| Cassette | SRAM XG-1275 Eagle, 10-50t, 12-speed |
| Crankset | SRAM GX Carbon Eagle, DUB, Lunar Boost, 32 tooth chainring (Length |
| Front Wheel | DT Swiss X-1900 Spline 25c TLR CL, 15/110mm Boost |
| Rear Wheel | DT Swiss X-1900 Spline 25c TLR CL, 12/148mm Boost |
| Front Tyre | Maxxis Rekon Race 2.35”, 120 TPI Exo, tubeless-ready |
| Rear Tyre | Maxxis Rekon Race 2.35”, 120 TPI Exo, tubeless-ready |
| Saddle | Fizik Taiga S-alloy rail |
| Seatpost | Orbea OC2 Dropper, 31.6mm diameter, 390/125mm length |
| Remote Lockout | Orbea OC Squidlock 3-position |
| Pedals | Available to be purchased separately |
| Accessories | Orbea OC chainguide |
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.
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