A wheelchair (10) comprising:- a seat module (10) including a seat frame (11) supporting a seat (12)；- a backrest module (20) including a backrest frame (21) connected to said seat frame (11) and supporting a backrest (22)；- a front frame module (30) including a front frame (31), said front frame (31) including left and right bended legs (31 a, 31 b) removably connected at their upper end to said seat frame (11) and at their lower end to a footrest (32), said bended legs (31 a, 31 b) being supported by caster wheel assemblies (35, 36) via caster support (34)；- a rear wheel module (40) including left and right rear wheels (41 a, 41 b) pivotally connected to an axle (42), said rear wheel module (40) being removably connected to said seat module (10) through left and right connecting elements (43a, 43b)；wherein said seat frame (11) consists in left and right longitudinal profiles (11a, 11b) extending in the same plane.
