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Orbea Alma M51 is a reliable mountain bike designed for mountain biking enthusiasts. Its modern design and advanced technologies ensure a smooth ride, regardless of the terrain difficulty, making every trip unforgettable.

Basic data

Brand Orbea
Country of origin of the brand Spain
Sport Bicycles
Gender Male, Woman
Season Year-round
Leading colour Silver
Model/product code Alma M51 R21816MD
Code 2000103857

Frame

Frame Orbea Alma Carbon OMR, Boost 12x148, PF BB, Internal cable routing
Frame material Carbon fibre

Components

Steering wheel Alloy, 31.8mm, Flat, 740mm, Sweep 9
Handlebar support Alloy forged, -7º
Depreciation Front
Rudders FSA 1-1/8 - 1-1/2" Integrated
Fork RockShox Judy Silver TK Remote Solo Air 100 QR15x110 Boost
Saddle Selle Italia Model X FecAlloy Rail 145x248mm
Bar Alloy, forged head, 27.2mm, Setback 0

Drive

Derailleurs 1x12
Number of gears 12
Rear derailleur (model) SRAM NX Eagle
Handles SRAM NX Eagle
Crank mechanism SRAM Stylo 6K Eagle Dub Boost 32t Steel
Cassette / Freewheel SRAM PG-1230 Eagle 11-50t 12-Speed
Chain SRAM NX Eagle 12-Speed

Brakes

Brakes (model) Sram Level T 2 piston Hydraulic Disc
Brake type Hydraulic discs

Wheels

Wheel size 29"
Wheels Alloy, Tubeless, 25c, 32H
Tyres Maxxis Rekon Race 2.35" 120 TPI Exo TLR

Warnings and producer's data

Warnings The manufacturer reserves the right to change specifications, materials and equipment, so please refer to the current technical description on the product sheet below. The photos are for illustrative purposes only.
Producer Orbea S. Coop. | Polígono Industrial Goitondo, s/n, 48260 Mallabia, Bizkaia, Hiszpania | info@orbea.com

Orbea Alma M51 2024 halo silver/shark grey mountain bike (R21816MD)

Orbea Alma M51 2024 Mountain Bike is a model designed for maximum performance and precision. Thanks to the use of advanced technologies and high-quality components, this bike offers excellent riding characteristics both on demanding trails and race tracks.

The frame is made of advanced OMR (Orbea Monocoque Race) carbon, which ensures exceptional lightness and durability. The frame manufacturing technology includes precise layering of carbon fibers, which maximizes stiffness and minimizes weight, resulting in better control and responsiveness during riding. Thanks to the Boost 12x148 standard, the frame features increased rear stiffness, improving power transfer and stability on uneven surfaces.

The Alma M51 frame has internal cable routing, which not only improves the bike’s aesthetics but also protects the cables from damage and dirt, ensuring smoother operation over a longer period. The PressFit Bottom Bracket (PF BB) technology allows easier installation and servicing while increasing bottom bracket area stiffness. These advanced design solutions make the bike ready for challenges on any trail.

Excellent shock and vibration damping is possible thanks to the RockShox Judy Silver TK Remote Solo Air fork with 100 mm travel. This fork is designed for advanced suspension, resulting in a smoother and more comfortable ride. Solo Air allows precise adjustment of air pressure in both fork chambers using a single valve, ensuring even distribution of damping force. Remote fork lockout enables quick adjustment of the suspension performance to changing terrain conditions without having to get off the bike.

Grip and stability on various surfaces are ensured by Maxxis Rekon Race tires with a width of 2.35" and 120 TPI density featuring Exo TLR technology. These durable tires are designed for optimal trail performance, offering excellent riding characteristics on both dry and wet surfaces. Exo Protection technology provides an additional layer of protection against punctures and sidewall damage, which is especially important when riding on rocky and root-filled trails.

Easy seat height adjustment is provided by an aluminum seatpost with a diameter of 27.2 mm, forged head, and zero setback. The seatpost, made of high-quality aluminum, is lightweight yet very durable, ensuring stability and longevity during intense off-road riding. Zero setback allows for a more upright riding position, which is particularly beneficial during climbs when shifting the center of gravity forward is necessary.

Advantages

Front cushioning
The cushioning on the bike provides comfort when negotiating bumps in the road. This model features front wheel cushioning, which absorbs the force when hitting an obstacle and increases the level of safety.
Carbon frame
Thanks to its flexibility, the carbon frame is characterised by its ability to absorb vibrations when riding over rough terrain. In addition, this material is characterised by its low weight, which makes carrying the bike no problem.
Hydraulic disc brakes
This mountain bike is equipped with hydraulic disc brakes, which have a very low failure rate so that use will be trouble-free, even during frequent use. In addition, they feature greater braking power and modulation.
Drive 1x12
The 1x12 derailleurs used on this mountain bike allow effortless shifting and provide smooth gradation. The large gear range allows you to adjust the gearing to suit the current conditions on the trail.
29" wheels
The use of 29 wheels has made it possible to provide more and better tyre contact with the ground, which makes it much easier to overcome bumps when riding over rough terrain. This size guarantees good stability when riding at higher speeds.
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Orbea Alma M51 2024 halo silver/shark grey mountain bike

Orbea Alma M51 2024 halo silver/shark grey mountain bike

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Orbea Alma M51 2024 halo silver/shark grey mountain bike

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Size Sizes table
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Sizes table

    Size S M L XL
    Height (cm) 155-170 165-180 178-190 185-198
    A - Seat tube (mm) 400 445 483 533
    B - Horizontal pipe (mm) 559 593 618 647
    C - Steerer tube (mm) 90 100 110 125
    D - Rear triangle (mm) 430 430 430 430
    E - Support height (mm) 309 309 309 309
    F - Support lowering (mm) 61 61 61 61
    G - Wheelbase (mm) 1083 1118 1144 1175
    H - Head angle 68 68 68 68
    I - Seat tube angle (°) 74,5 74,5 74,5 74,5
    J - Crossover (mm) 693 729 749 819
    K - Reach (mm) 395 426 448 474
    L - Stack (mm) 593 602 612 625
    M - Fork (mm) 500,8 500,8 500,8 500,8

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