Marin Alpine Trail 1 2025 Bike

The all-new Alpine Trail series is our boldest and most capable line of enduro bikes ever, built upon our most advanced, most adjustable frames to date.

Series 4 aluminum MultiTrac 2 LT frames feature mixed 29”/27.5” wheels, 170mm front and 160mm rear travel, and the utmost in adjustability. Riders can alter the head tube angle and bottom bracket/chainstay length, as well as run 29” rear wheels if desired. “Bear Box” downtube storage includes a zippered nylon bag to house trail essentials, and a 34.9mm seatpost increases strength and is compatible with the latest dropper posts.

While the Alpine Trail 1 is the starting point in the three-model lineup, we didn’t make any concessions regarding the spec. High-performance Fox suspension keeps you in control, while a Shimano Deore 12-speed drivetrain transmits your power to the wheel. TRP’s Slate Evo 4-piston brakes feature 203mm rotors, keeping all that speed in check in a powerful, fade-free manner.

Technology

MultiTrac 2 LT

MultiTrac 2 LT debuts on the aluminum-framed Alpine Trail alloy models. MultiTrac 2 LT shifts from seatstay pivots to chainstay pivots, ensuring that the suspension performance matches our design goals, which are not achievable using pivots located on the seatstay once travel exceeds 150mm. With MultiTrac 2 LT, the benefits of relocating the rear pivot points from the seatstay to the chainstay become apparent, as it reduces anti-rise, allowing for better chassis control while braking, more mid-stroke support, and better feel at bottom out.

Adjustable

With the integrated flip chips, adjustable headset and an aftermarket 29” rear wheel, Alpine Trail aluminum riders can select 12 unique configurations to run their bikes. These configurations allow the best fine-tuning of chassis to trail conditions available. Flip chips are easy to reconfigure trailside and easily done using a 6mm hex wrench, require no additional parts, and incorporate laser-etched graphics that indicate the position of the chips. The stock 27.5” rear wheel can be swapped out for a 29” rear wheel (not included) if desired, along with changing the position of the seatstay flip chips. Furthermore, the flip chips located at the seatstay pivots alter the bottom bracket height and chainstay length (low BB/long CS setting = 345/442mm, high BB/short CS setting = 352/435mm) so that riders can perfectly dial their bike in to match the terrain they are looking to conquer.

Bear Box Downtube Storage

The all-new Alpine Trail aluminum models now feature our Bear Box integrated downtube storage, complete with a custom nylon bag with a weather-sealed zipper. The hatch door is secure and double-sealed, with bottle bosses. Keep your riding essentials safe and protected from the elements during your big ride.

Adjustable Headtube Angle

Using our proprietary headset cups and inserts, the headtube angle on Alpine Trail aluminum models can be adjusted to +0.75° or -0.75° from the standard 63° position, giving the rider three options.

Protection

Chainstay and seatstays are protected with durable rubber guards that minimize noise and protect paint finishes, and integrated downtube guards helps deflect errant rocks, logs, or anything else riders may encounter on the trail.

Specifications

Frame and Forks

• Frame: All New Series 4 6061 Aluminum
• Forks: Fox 36 Rhythm, 170mm Travel, 29", Grip Damper, 110 x 10 Kabolt, 44mm Offset
• Rear Shock: Fox Float Performance, 205 x 65mm, 30xM8 Lower Hardware, Custom Tune

Drivetrain

• Crankset: FSA Comet Heavy Duty, Modular 1x, 32 Tooth Direct Mount Chainring, MegaTooth Technology, Boost Spacing
• Bottom Bracket: FSA MegaExo 73mm BSA
• Rear Derailleur: Shimano Deore, 12-Speed, SGS
• Cassette: Shimano, Deore M6100 12-Speed, 10-51 Tooth
• Chain: KMC HL-1

Braking/Shifting

• Front Brake: TRP Slate EVO, 4-Piston Hydraulic Disc, Resin Pads, 203mm Rotor
• Rear Brake: TRP Slate EVO, 4-Piston Hydraulic Disc, Resin Pads, 203mm Rotor
• Brake Levers: TRP Slate EVO Hydraulic, I-Spec EV Compatible

Wheels

• Front Hub: Shimano FH-TC500, 110 x 15mm
• Rear Hub: Shimano HB-TC500, 148 x 12mm, Micro Spline Freehub Body
• Rims: Marin, Double Wall Alloy, 29mm Inner, Pinned Joint, Disc Specific, 32 Hole, Tubeless Compatible
• Tyres: Vee Tire Co. Snap WCE, 29 x 2.6" Front 27.5 x 2.6" Rear, Top 40 Compound, Enduro Core, 90 TPI, Tubeless Compatible

Finishing Kit

• Handlebars: Marin Mini-Riser, 6061 Double Butted Aluminum, 780mm Width, 28mm Rise, 5º Up, 9º Back
• Grips: Marin Grizzly Lock-On
• Stem: Marin 3D Forged Alloy, 35mm
• Seatpost: TranzX, YSP39 1x Remote, 34.9 Seatpost Diameter, Travel Small = 150mm, Medium / Large = 170mm, X-Large = 200mm
• Saddle: Marin Speed Concept