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 Alma M51-Eagle Mountain Bike 2022
With its OMR carbon construction, the Orbea Alma M51-Eagle Mountain Bike packages lightweight race-inspired performance with comfortable compliance, making it a trail weapon on long, endurance-focused singletrack rides. The geometry is aggressive for near-telepathic handling and intuitive responsiveness, while the frame weighs only 1100 grams to keep the ride lively.
Focusing on cross country, the specification features reliable components designed to provide mile after mile of performance. The 12-speed SRAM NX drivetrain offers a wide range of gears, as well as high levels of durability to prevent wear. The RockShox Judy Silver TK Solo Air fork is adjustable to suit a range of rider weights and features a remote lockout to improve pedalling performance on steep inclines. Shimano hydraulic disc brakes ensure powerful stopping and control on loose terrain, and Maxxis tyres deliver fast-rolling performance and tacky grip.
Highlights
- Orbea Monocoque OMR carbon construction is lightweight and compliant
- Responsive geometry delivers a fast, spritely ride character
- Rattle-free internal cable routing
- RockShox Judy Silver TK Remote Solo Air fork with remote lockout
- SRAM NX Eagle 12-speed drivetrain, with 11-50t range
- Orbea OC1 tubeless-ready wheels in a 29” diameter
- Fast-rolling Maxxis Ikon 2.2” tyres
Technical Specification
| Frame | Orbea Alma Carbon OMR, Boost 12x148, press fit bottom bracket, internal cable routing |
| Fork | RockShox Judy Silver TK Remote Solo Air 100 QR15x110 Boost |
| Headset | FSA 1-1/8 - 1-1/2" Integrated |
| Stem | Orbea OC1 31.8mm diameter, 7° |
| Handlebar | Orbea OC1 Flat, 31.8mm diameter, 740mm width |
| Front Brake | Shimano MT201, hydraulic disc |
| Rear Brake | Shimano MT201, hydraulic disc |
| Brake Levers | Shimano MT201, hydraulic disc |
| Rear Derailleur | SRAM NX Eagle, 12-speed |
| Shift Levers | SRAM NX Eagle, 12-speed |
| Chain | SRAM NX Eagle, 12-speed |
| Cassette | SRAM NX PG-1230 Eagle, 11-50t, 12-speed |
| Crankset | SRAM Stylo 6K Eagle Dub Boost, 32t |
| Front Wheel | Orbea OC1 25c, 29”, tubeless-ready |
| Rear Wheel | Orbea OC1 25c, 29”, tubeless-ready |
| Front Tyre | Maxxis Ikon 2.20" FB 60 TPI Dual, clincher |
| Rear Tyre | Maxxis Ikon 2.20" FB 60 TPI Dual, clincher |
| Saddle | Selle Italia Model X FecAlloy Rail, 145x248mm |
| Seatpost | Orbea OC2 Dropper, 27.2mm, 80mm travel |
| 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. 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.
Unable to display Reviews due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Unable to display Q&A due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".