Check valve assembly (1, 1′) for a shock absorber (100) comprising a housing (10). The housing (10) comprises a first volume (11), wherein a pressure P1 prevails; a second volume (12), wherein a pressure P2 prevails; a first housing portion (VE1), and a second housing portion (VE2). The housing (10) further comprises a fluid passage (20) between said first (11) volume and said second (12) volume; and a spool (40), said spool (40) being movably arranged in said housing (10) between at least a first position in which a flow of fluid through said fluid passage (20) between the first (11) and second (12) volume is allowed and at least a second position in which a flow of fluid through said fluid passage (20) between the first (11) and second (12) volume is prevented. The spool (40) comprises a first portion (S1) adapted to engage with said first portion (VE1) of said valve housing 10, forming a first region of engagement (RE1), and a second portion (S2) adapted to engage with said second portion (VE2) of said valve housing (10), forming a second region of engagement (RE2). Further, the first region of engagement (RE1) is arranged at a first location and said second region (RE2) is arranged at a second location. Also, a shock absorber (100) comprising a working cylinder (C) adapted to receive a working fluid, a piston dividing said cylinder (C) into a first (WC1) and a second (WC2) working chamber and a check valve assembly (1, 1′) according to above. Further, a front fork comprising such a check valve assembly (1, 1′).