Marin Bikes | 2025 Alpine Trail XR

📏Size Guide

Long-travel enduro performance built for steep terrain, bike park abuse, and aggressive descending without compromise.

The Marin Alpine Trail XR is a high-performance enduro mountain bike designed for riders who demand downhill confidence, modern geometry, and serious suspension capability on aggressive terrain. Built around Marin’s long-travel MultiTrac LT suspension platform, the Alpine Trail XR combines race-ready descending performance with surprisingly efficient climbing manners for full-day enduro riding and technical mountain terrain.

Constructed with an all-new Series 4 6061 aluminum frame and 160mm rear suspension travel, the Alpine Trail XR pairs a RockShox Zeb Ultimate fork with a RockShox Super Deluxe Coil Ultimate shock to deliver exceptional traction, control, and composure through rough descents, technical rock gardens, and high-speed trail sections. SRAM GX Eagle drivetrain components, powerful SRAM DB8 four-piston brakes, and adjustable geometry complete a premium aggressive trail and enduro package.

Key Features

• Series 4 Aluminum Enduro Frame
Modern long-travel aluminum chassis with integrated downtube storage, adjustable geometry, internal cable routing, and Boost thru-axle spacing.

• MultiTrac LT Suspension Platform
160mm rear travel paired with a 170mm fork provides exceptional descending capability while maintaining climbing efficiency.

• RockShox Zeb Ultimate Fork
High-end enduro suspension fork with 170mm travel, Charger damper performance, and aggressive trail tuning.

• RockShox Super Deluxe Coil Ultimate Shock
Coil-sprung rear suspension improves traction, sensitivity, and control on rough technical terrain.

• SRAM GX Eagle 1x12-Speed Drivetrain
Wide-range Eagle gearing delivers reliable shifting and climbing performance across demanding terrain.

• SRAM DB8 Four-Piston Hydraulic Brakes
Powerful hydraulic braking system with large 200mm rotors for aggressive descending control.

• Mullet Wheel Configuration
Mixed-wheel setup combines 29” front wheel rollover capability with a responsive 27.5” rear wheel for agility and control.

Technical Specifications

• Category
Full Suspension Enduro Mountain Bike

• Discipline
MTB

• Frame
Series 4 6061 Aluminum, 160mm Travel MultiTrac LT Suspension Platform, Integrated Downtube Storage, Adjustable Geometry

• Fork
RockShox Zeb Ultimate, 170mm Travel, 44mm Offset

• Rear Shock
RockShox Super Deluxe Coil Ultimate, 205x65mm

• Bottom Bracket
SRAM DUB MTB 73

• Headset
FSA Custom Adjustable HTA Design

• Rear Derailleur
SRAM GX Eagle Lunar 12-Speed

• Front Derailleur
N/A

• Shifters
SRAM GX Eagle Lunar MMX Mount

• Crankset
SRAM GX Eagle, 32T

• Cassette
SRAM GX 1275 T-Type, 10-52T

• Chain
SRAM NX Eagle

• Brakes
SRAM DB8 4-Piston Hydraulic Disc Brakes

• Brake Rotors
200mm Front and Rear

• Wheelset
Marin Double Wall Alloy, 29mm Inner Width, Tubeless Compatible

• Front Hub
Formula DC-711, 110x15mm, 6-Bolt Disc

• Rear Hub
Formula DCL-3482, 148x12mm, XD Driver

• Tires
Front: Maxxis Assegai 29x2.5 EXO+
Rear: Maxxis Assegai 27.5x2.5 DoubleDown

• Handlebar
Marin Trail Alloy, 800mm Width

• Stem
Marin CNC, 35mm

• Seatpost
TranzX YSP39 Dropper Post

• Saddle
Marin Speed Concept

• Color Options
Silver / Black (#A9A9A9)

Geometry

Built for riders seeking a modern long-travel enduro bike with aggressive geometry, premium suspension performance, and downhill-focused capability for technical mountain terrain.