The Marin Alpine Trail 1 is a high-performance enduro bike designed for riders who demand the ultimate in adjustability and capability. With its Series 4 aluminum MultiTrac 2 LT frame, this bike features mixed 29”/27.5” wheels, 170mm front and 160mm rear travel, and a range of adjustability options to fine-tune the ride to suit any terrain.Key Features: Adjustable Geometry: Integrated flip chips, adjustable headset, and aftermarket 29” rear wheel allow for 12 unique configurations to match trail conditions MultiTrac 2 LT Frame: Shifts rear pivot points from seatstay to chainstay for improved suspension performance Bear Box Downtube Storage: Integrated storage with zippered nylon bag for trail essentials High-Performance Suspension: Fox suspension for control and precision Shimano Deore 12-Speed Drivetrain: Transfers power to the wheel with precision and reliability TRP Slate Evo 4-Piston Brakes: Powerful and fade-free braking with 203mm rotors 34.9mm Seatpost: Increases strength and compatibility with latest dropper posts Bottom Bracket: FSA MegaExo 73mm BSA. Extras: Bolt-On 12mm Thru-Axle, 174mm Length, 1.0 Thread Pitch, 16.5mm, Tapered Head. Who is it for? The Marin Alpine Trail 1 is designed for enduro and all-mountain riders who demand high-performance capability and adjustability.