Marin Bikes | Four Corners 1

📏Size Guide

The Marin Bikes Four Corners 1 is built for long days in the saddle, whether you're bikepacking, touring, or commuting through all types of terrain. It blends the classic feel of steel with the modern features riders need to explore farther, ride longer, and carry everything they need along the way.

For 2026, the Four Corners 1 features a butted CrMo steel frame, 650B wheels for better fit and comfort on smaller sizes, and Shimano’s wide-range 3x9 drivetrain to help you power through climbs with ease — even when fully loaded.

Key Features:

• Double-Butted 4130 CrMo Steel Frame & Fork
Durable, smooth-riding steel designed for loaded touring and all-day comfort

• 650B Wheels with 47mm Tires
Ideal for smaller riders with a balance of cushioning, grip, and control

• Microshift Sword 2x9-Speed Drivetrain
Versatile gear range for tackling climbs and descents while fully packed

• Tektro Mechanical Disc Brakes
Reliable stopping power in all conditions with simple maintenance

• Six Bottle Mounts, Rack & Fender Mounts, Lowrider Fork Mounts
Maximize cargo and hydration for extended bikepacking adventures

• Endurance Geometry with High Stack
Comfortable upright riding position with off-road-ready handling

• Tire Clearance Up to 650Bx50mm or 700x45mm
Customize your ride with wider tires for rougher routes or added comfort