Maximum enduro, zero compromises. Build your fantasy enduro rig – the Alpine Trail XR Frameset is the best chassis we've ever made. A Series 4 Aluminum frame, full geometry adjustment, 160mm travel MultiTrac LT suspension platform and integrated downtube storage. Mixed wheel or full 29in compatible, UDH and ride-hushing chain slap protection. It's unapologetically the best. RockShoxVivid Air Ultimate rear shock included – the rest is up to you. Charge hard. Send big. Drift deep. Repeat. 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 Rear Suspension RockShox Vivid Air Ultimate, 205x65, 30xM8 Lower Hardware, Custom Tune Headset FSA Custom Headset, Adjustable HTA Design Extras Marin MTB Seat Clamp - Bolt Type, Bolt-On 12mm Thru-Axle, 174mm Length, 1.0 Thread Pitch, 16.5mm, Tapered Head, Downtube Storage Bag Geometry Specifications, pricing, and availability are subject to change without notice.