The Marin Alpine Trail XR is a long-travel enduro bike with 160mm rear suspension and adjustable geometry. Its mixed-wheel setup, Fox Float shock, Shimano Deore 1x12 drivetrain and powerful TRP brakes make it well suited to steep, technical trails.

Key Features:

• Series 4 6061 aluminium frame with 160mm MultiTrac LT and adjustable geometry
• Fox Float Performance rear shock with 160mm of frame travel
• Shimano Deore 1x12-speed drivetrain with wide-range 10-51T cassette
• TRP Slate EVO 4-piston hydraulic disc brakes with 203mm rotors
• 29in front, 27.5in rear wheels with tubeless-compatible Vee Flow Snap tyres
• Integrated Bear Box downtube storage keeps trail essentials on the bike
• Available with 0% APR finance

The Marin Alpine Trail XR is built around a completely redesigned Series 4 6061 aluminium frame and Marin's MultiTrac LT suspension platform, delivering 160mm of rear wheel travel. Its geometry and mixed-wheel setup are aimed at technical trail and enduro riding, while plenty of adjustment lets you tailor the bike to different terrain and riding preferences.

The adjustable headset allows the head tube angle to be altered, while a separate adjustment changes the chainstay length and bottom bracket height. Together, these give you scope to tune the Alpine Trail's handling rather than being locked into a single geometry setting.

The frame is also compatible with a 29-inch rear wheel if you want to move away from the standard mixed-wheel setup. As supplied, the 29-inch front wheel helps roll through rough sections and maintain momentum, while the smaller 27.5-inch rear can make the bike easier to manoeuvre through tighter or steeper terrain.

At the rear, a custom-tuned Fox Float Performance air shock controls the Alpine Trail's 160mm of travel. Air suspension makes it straightforward to adjust spring pressure to suit rider weight and riding style, helping you get the suspension working correctly for your setup.

Shimano Deore provides dependable 1x12-speed shifting. The Deore rear derailleur and SL-M6100 shifter work with a wide-range 10-51T cassette, providing plenty of lower gearing for winching back up steep climbs between descents. A 32T FSA Comet Heavy Duty crankset completes the drivetrain.

TRP Slate EVO four-piston hydraulic disc brakes are paired with large 203mm rotors at both ends. The four-piston callipers and large rotors provide the braking power and heat management useful on longer, steeper descents, with plenty of control for managing speed on technical terrain.

Marin's double-wall alloy rims have a 29mm internal width and are tubeless compatible. They're paired with a 29x2.6in Vee Tire Flow Snap at the front and a 27.5x2.5in version at the rear. Both use Vee's Top 40 compound and Enduro Core construction, creating a wide, gravity-focused tyre setup for grip and support on rough trails.

A TranzX dropper post comes as standard, with the amount of travel matched to frame size. Small bikes receive 150mm travel, Medium and Large get 170mm, while XL bikes step up to 200mm. The 34.9mm seatpost diameter also gives the frame compatibility with the latest generation of larger-diameter dropper posts.

The frame includes Marin's Bear Box integrated downtube storage, giving you somewhere to carry smaller trail essentials without a backpack. A zipped nylon storage bag is included to keep equipment organised inside the frame.

Full internal cable routing keeps the frame tidy, while a short 35mm Marin stem and 780mm double-butted aluminium handlebar create a modern cockpit suited to technical riding.

With adjustable geometry, the option to run a full 29-inch wheel setup, integrated storage and 160mm of rear travel, the Alpine Trail XR gives riders plenty of scope to adapt the bike. It's a versatile platform for technical trail riding, enduro and bike park days where descending performance is a priority.

One thing to flag: there isn't a fork listed in the specification you've supplied, so I've left the fork bullet out rather than assuming the model or travel. The manufacturer text also appears to describe the Alpine Trail 1 rather than the XR, so I've prioritised the detailed component specification where possible.

Occasionally, without notice, manufacturers change product design and/or specifications.