BMX Bike (Polygon mesh 3D model) is available on CGTrader for $30. Original author: Genius-Graphics. Specs: 510239 polys, 257452 verts.
BLEND (Blender, filesize: 92.9 MB), OBJ (OBJ, filesize: 6.85 MB), FBX (Autodesk FBX, filesize: 14.9 MB), GLTF (glTF, filesize: 15.4 MB), TEXTURES (Textures, filesize: 20 MB), ABC (Alembic, filesize: 7.41 MB), STL (Stereolithography, filesize: 9.28 MB), PLY (Ply, filesize: 4.43 MB), DAE (Collada, filesize: 9.36 MB)