Find LEGO® arch bricks at CrocoBricks, the foundation pieces for any architectural MOC build. Our inventory covers arches in every size and style from small 1x2 inverted arches up to the dramatic 1x12 raised bridge arches.

Standard arches (1x3, 1x6, 1x8, 2x8) work for doorways and basic window frames. Curved-top arches like the 1x6x3 1/3 (6060) and 1x6x2 (6183) add a classical look. The 1x6x2 family includes thin-top, medium-thick, and thick-top with reinforced underside variants (12939, 15254, 3307) for fine-tuned proportions.

Raised arches (14707, 18838 with cross supports, 6108, 16577) are perfect for bridge spans and aqueducts. Inverted arches (30099, 70681, 78666) work for vehicle wheel wells, ceiling details and SNOT techniques. Specialty pieces include the ornamented 3x6x5 (30613) for cathedral entrances, the 2x14 large arch (30296) for grand gateways, the corner arch (38585) for round towers and the tall 1x6x6 (30257c01) for narrow Gothic windows.

Whether you're building a medieval castle, a modular Victorian house, a Roman aqueduct, or a custom train tunnel, search by part number or browse the available inventory above.

Every arch is inspected before listing. A mix of new factory-sealed pieces and quality-checked used arch bricks. Same-day dispatch on orders placed before 16:00.