NEW 2027 Orbea Alma M20 Carbon Mountain Bike - Shimano XT M8250

The 2027 Orbea Alma M20 brings Shimano's latest XT M8250 12-speed shifting to the carbon Alma, paired with a RockShox SID SL air fork and an Orbea Components cockpit. It's a focused, race-ready cross-country hardtail that climbs fast and shifts with precision.

Orbea Alma Carbon Frame

The Alma Carbon frame is the stiff, light foundation of Orbea's cross-country race line, with Boost 12x148 spacing and internal routing. Quick-handling XC geometry keeps the M20 efficient and confident on race courses and long backcountry days alike.

Latest Shimano XT M8250 Shifting

A Shimano XT M8250 rear derailleur with a Deore M6250 I-Spec EV shifter delivers Shimano's newest, crispest 12-speed mountain shifting across a 10-51t cassette. A RockShox SID SL Select air fork with DebonAir+ handles the front end with true XC-race performance.

Orbea Components Cockpit

An OC Mountain Performance MP21 stem and MP30 bar tidy up the cockpit, while Shimano Deore four-piston-ready braking and fast Maxxis Rekon Race 2.40" tubeless-ready tires keep the M20 controlled and quick.

Available in three colorways - Caramel Carbon View - Leo Orange (Gloss), Noctiluca Carbon View - Cobalt Blue (Gloss), and Golden White - Titan Gold (Matt) - in sizes S-XL.

KEY FEATURES:

• Orbea Alma Carbon XC frame, Boost 12x148, internal routing
• RockShox SID SL Select 110mm DebonAir+ air fork
• Shimano XT M8250 12-speed rear derailleur (latest generation)
• Shimano Deore M6250 I-Spec EV shifter
• Shimano CS-M6200 10-51t 12-speed cassette
• Shimano Deore 6200 4-piston-ready hydraulic disc brakes
• OC Mountain Performance cockpit
• Maxxis Rekon Race 2.40" tubeless-ready tires, 29"

BUILD KIT:

• Frame: Orbea Alma Carbon, Boost 12x148, internal cable routing
• Fork: RockShox SID SL Select 110mm DebonAir+ RL 2-Position, 15x110
• Headset: Alloy 1-1/2"
• Stem: OC Mountain Performance MP21, -6deg
• Handlebar: OC Mountain Performance MP30, Width 760
• Brakes: Shimano Deore 6200 Hydraulic Disc
• Rear Derailleur: Shimano XT M8250 SGS
• Shifter: Shimano Deore M6250 I-Spec EV
• Cassette: Shimano CS-M6200 10-51t 12-Speed
• Chain: Shimano M6100
• Crankset: Shimano MT620, 32t
• Wheels: Alloy, 26c, 28H, Tubeless Ready
• Tires: Maxxis Rekon Race 2.40" 120TPI Exo TR
• Saddle: Selle Italia Model A Greentech

SIZING: Orbea's recommended rider height by size (approximate):

• S: 150-170 cm (4'11"-5'7")
• M: 160-180 cm (5'3"-5'11")
• L: 170-190 cm (5'7"-6'3")
• XL: 180-200 cm (5'11"-6'7")

FREQUENTLY ASKED:

• How does the M20 compare to the M30? The M20 steps up to Shimano's latest XT M8250 rear derailleur with a Deore M6250 I-Spec EV shifter and an OC Mountain Performance cockpit - the newest-generation Shimano 12-speed shifting on the carbon Alma.
• Is the frame carbon? Yes - the Orbea Alma Carbon frame shared across the M-series.
• Is it a hardtail? Yes - a carbon cross-country hardtail with a 110mm air fork.
• What's the next step up? The Alma M-PRO moves to SRAM GX Eagle AXS wireless shifting, Oquo carbon-spec wheels, and Pirelli race tires.
• What's new for 2027? Shimano's latest XT M8250 12-speed group and new 2027 colorways.