2025 Marin Alpine Trail XR Mountain Bike
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Product Description
2025 Marin Alpine Trail XR - Xtra Rad Performance
Ultimate Suspension. Mechanical Precision. Professional Enduro Value.
The 2025 Marin Alpine Trail XR is engineered for riders who demand elite-level enduro performance without the "wireless" price tag. Built on the all-new Series 4 Aluminum MultiTrac 2 LT frame, the XR (Xtra Rad) combines a 170mm RockShox Zeb Ultimate fork with a custom-tuned Super Deluxe Coil Ultimate rear shock. This is a pure, hard-charging machine designed to thrive on the world's steepest and most technical descents.
Elite Adjustability & Integrated Storage
Customization is at the heart of the Alpine Trail XR. With an adjustable head tube angle, bottom bracket height, and chainstay length, you can tune the bike's geometry to match your local terrain. The "Mullet" wheel setup (29" Front / 27.5" Rear) offers the perfect blend of rollover speed and flickable agility. Plus, the integrated Bear Box downtube storage keeps your tools and spares protected inside the frame, lowering the center of gravity for better handling.
RockShox Ultimate Level
Featuring the top-tier Zeb Ultimate fork with ButterCups and the Super Deluxe Coil Ultimate shock for maximum traction and fade-free performance on long descents.
SRAM GX Eagle Lunar
A reliable mechanical 12-speed drivetrain with a massive 10-52T range, providing crisp shifts and the durability needed for aggressive enduro riding.
Technical Specifications
| CHASSIS & SUSPENSION | |
|---|---|
| Frame | Series 4 6061 Aluminum, MultiTrac 2 LT Platform, 160mm Travel, Bear Box Storage, Adjustable Geo |
| Front Suspension | RockShox Zeb Ultimate, 170mm Travel, 29”, Charger 3 RC2, 44mm Offset |
| Rear Suspension | RockShox Super Deluxe Coil Ultimate, 205x65mm (S/M: 350lb, L/XL: 450lb spring) |
| DRIVETRAIN & BRAKES | |
| Rear Derailleur | SRAM GX Eagle Lunar, 12-Speed |
| Crankset | SRAM GX Eagle, 32T, 170mm, DUB MTB 73 |
| Cassette | SRAM XG 1275 Eagle, 10–52T |
| Brakes | SRAM DB8 4-Piston Hydraulic (200mm Front / 180mm Rear Rotors) |
| WHEELS & COCKPIT | |
| Tires | Maxxis Assegai MAXX GRIP (29x2.5" EXO+ Front / 27.5x2.5" DoubleDown Rear) |
| Wheelset | Marin Double Wall Alloy, 29mm Inner, Formula Hubs, XD Driver |
| Seatpost | TranzX YSP39 Dropper (S: 150mm | M/L: 170mm | XL: 200mm) |
Key Innovation Summary
- Mixed Wheel Configuration: 29" front for rollover, 27.5" rear for agility in tight turns.
- Total Adjustability: Integrated flip-chips to alter geometry and rear wheel sizing (supports full 29").
- Bear Box: Seamless internal storage bag for tools, keeping your ride rattle-free.
- High-Performance Braking: SRAM DB8 brakes use mineral oil for high performance with less maintenance.
Manufacturer: Marin Bikes California
Model: Alpine Trail XR (2025)
Intended Use: Enduro, Bike Park, Technical Gravity.
