Marin Bikes | 2025 Alpine Trail 1

📏Size Guide

Long-travel enduro performance built to charge hard descents, technical terrain, and aggressive all-mountain lines.

The Marin Alpine Trail 1 is a full-power enduro machine designed for riders who want maximum descending confidence without sacrificing climbing capability. Built around Marin’s Series 4 aluminum MultiTrac LT frame platform, the Alpine Trail 1 combines aggressive geometry, mixed-wheel handling, and premium Fox suspension into a highly capable package ready for bike park laps, steep natural terrain, and demanding enduro trails.

Its mullet wheel setup pairs a fast-rolling 29” front wheel with a playful 27.5” rear for improved maneuverability and cornering control, while the adjustable geometry system lets riders fine-tune head angle, bottom bracket height, and chainstay feel. Integrated Bear Box downtube storage and modern trail-focused details complete a bike that’s built for serious riding.

Key Features

• Series 4 6061 Aluminum Frame
Long-travel MultiTrac LT suspension platform with integrated downtube storage, adjustable geometry, and full internal cable routing.

• Mixed Wheel Configuration (Mullet Setup)
29” front wheel paired with 27.5” rear wheel for improved rollover, agility, and aggressive trail handling.

• Fox Suspension Package
Fox 36 Rhythm fork with 170mm travel combined with a Fox Float Performance rear shock delivering 160mm rear travel.

• Shimano Deore 12-Speed Drivetrain
Wide-range 10-51T cassette provides reliable shifting and strong climbing performance for steep terrain.

• TRP Slate EVO 4-Piston Hydraulic Brakes
Powerful braking performance with large rotors for control on fast and technical descents.

• Bear Box Downtube Storage
Integrated internal frame storage system with included zippered bag for carrying ride essentials.

• Modern Enduro Geometry
Slack 63.5° head angle, steep seat angle, and long reach geometry built for stability and aggressive riding.

Technical Specifications

• Category
Full Suspension MTB

• Discipline
MTB / Enduro

• Frame
Series 4 6061 Aluminum MultiTrac LT Suspension Platform

• Fork
Fox 36 Rhythm, 170mm Travel, Air Spring

• Rear Shock
Fox Float Performance, Custom Tune

• Rear Travel
160mm

• Bottom Bracket
Mega EXO 73mm BSA

• Headset
FSA Custom Adjustable Headset

• Rear Derailleur
Shimano Deore 12-Speed SGS

• Shifters
Shimano Deore SL-6100-IR 12-Speed

• Crankset
FSA Comet Heavy Duty, 32T

• Cassette
Shimano Deore M6100, 10-51T, 12-Speed

• Chain
KMC X-12

• Brakes
TRP Slate EVO 4-Piston Hydraulic Disc

• Brake Rotors
203mm Front / 203mm Rear

• Wheel Configuration
29” Front / 27.5” Rear

• Rims
Marin Double Wall Alloy, Tubeless Compatible

• Front Hub
Shimano HF-MT410B, 110x15mm

• Rear Hub
Shimano HB-MT410B, 148x12mm Microspline

• Tires
Front: Vee Tire Flow Snap 29x2.6"
Rear: Vee Tire Flow Snap 27.5x2.5"

• Handlebar
Marin Mini-Riser Alloy, 780mm

• Stem
Marin 3D Forged Alloy, 35mm

• Seatpost
TranzX Dropper Post
S: 150mm
M/L: 170mm
XL: 200mm

• Color Option
Brown / Blue

Geometry

Suitable for aggressive trail riding, enduro racing, bike park laps, and technical all-mountain terrain.