Maximum enduro. Zero compromises.
Build the ultimate enduro bike with the Marin Alpine Trail XR 2026 Frameset – the most capable chassis Marin has ever created. Designed for riders who want to build a truly personalised, high-performance enduro machine, the Alpine Trail XR combines aggressive geometry, long-travel suspension and practical modern features into one seriously capable package.
At its heart is a Series 4 6061 aluminium frame built around Marin's proven MultiTrac LT suspension platform, delivering 160mm of rear-wheel travel and the confidence to charge hard, send big and tackle demanding technical terrain. The frame offers extensive geometry adjustment, allowing you to fine-tune your setup for your riding style and local trails.
The Alpine Trail XR is compatible with 29-inch wheels or a mixed-wheel setup, while adjustable chainstay length and bottom bracket height give you even more control over the bike's handling characteristics. An adjustable headset allows further tuning of the head angle, making this a frameset that can evolve with your riding.
Practicality hasn't been forgotten either. Integrated downtube storage, full internal cable routing, UDH compatibility and dedicated chainstay protection help create a clean, durable and modern enduro build. The threaded 73mm bottom bracket with ISCG05 tabs also provides plenty of flexibility when building your dream bike.
Included with the frameset is a RockShox Vivid Air Ultimate rear shock, featuring custom tuning to complement the Alpine Trail's suspension platform. Add your own fork, wheels, drivetrain, brakes and finishing kit to create an enduro bike built exactly to your specification.
Available in the striking Grey/White/Red finish, the Marin Alpine Trail XR Frameset is made for riders who refuse to compromise.
Available from The Rolling Fix in Liverpool – your local independent bicycle store for mountain bikes and high-performance cycling equipment.
Key Features
- Series 4 6061 aluminium enduro frameset
- 160mm rear travel MultiTrac LT suspension platform
- Compatible with 29" or mixed-wheel configurations
- Adjustable head angle
- Adjustable chainstay length and bottom bracket height
- Integrated downtube storage
- UDH compatible
- Full internal cable routing
- Chainstay-mounted Post Mount disc brake
- Ride-hushing chainstay protection
- 148x12mm Boost rear thru-axle
- 73mm threaded BB with ISCG05 tabs
- FSA Custom adjustable headset
- RockShox Vivid Air Ultimate rear shock included
- Striking Grey/White/Red colourway
Whether you're building a dedicated enduro weapon or creating your dream custom mountain bike, the Marin Alpine Trail XR 2026 Frameset gives you an uncompromising foundation built to go fast, hit hard and handle whatever the trail throws at you.
Specification
Frame: Series 4 6061 Aluminum, 29” Wheels, 160mm Travel MultiTrac LT Suspension Platform, Integrated Downtube Storage, Adjustable Headset & CS Length/BB Height, Full Internal Cable Routing, Chainstay Mounted Post Mount Disc Brake, 148x12mm Boost Thru- Axle, 73mm Threaded BB w/ ISCG05 Tabs
Headset: FSA Custom Headset, Adjustable HTA Design
Rear Suspension: RockShox Vivid Air Ultimate, 205x65, 30xM8 Lower Hardware, Custom Tunegs, 1 1/8" x 1 1/2”