A crampon (1) for a ski
mountaineering boot (S1) having a
heel portion (s1p) and a
toe portion (s1a) or for
mountaineering or hiking boot (S2) having a
heel portion (s2p) and a
toe portion (s2a), said crampon (1) having a frame (100) with a thickness s′ and comprising a front portion (3) and a rear portion (4) connectable to each other by a connecting rod (6) extending along a longitudinal axis h of said connecting rod (6) and having an upper face (6a) and a
lower face (6b), a width (1) and a thickness(s), said crampon (1) extending along a longitudinal axis x of the crampon (1), wherein said front portion frame (3) comprises retention means (9) of the front portion of the boot (S1,S2) and a
support surface (7) of a
toe portion of the sole of a boot sole comprising front connection means for the connection with the connecting rod (6) represented by a first
coupling seat (10) for first
coupling means of the connecting rod (6), wherein said connecting rod (6) comprises first front
coupling means represented by a first selector (11) and / or a second selector (29) adapted to be inserted into the first connecting seat (10), characterized in that said first connecting seat (10) extends along a longitudinal axis y of said first connecting seat (10) which forms an angle γ with the longitudinal axis x of the crampon (1), wherein said angle γ can be counterclockwise (γ1) or
clockwise (γ2), and wherein said first selector (11) and / or said second selector (29) extends along a respective longitudinal axis k,j, which forms an angle (β,β′) with the longitudinal crampon axis x, wherein said angle (β,β′) can be counterclockwise (β1,β′1) or
clockwise (β2,β′2), so that when said first selector (11) and / or said second selector (29) (11,29) forms a counterclockwise angle (β1,β′1) and is or are coupled to the first connecting seat (10) having a counterclockwise angle (γ1) or when said first selector (11) and / or said second selector (29) forms a
clockwise angle (β2,β′2) and is or are coupled to the first connecting seat (10) having a clockwise angle (γ2), said crampon (1) is configured for a ski
mountaineering boot (S1), whereas when first selector (11) and / or said second selector (29) forms a counterclockwise angle (β1,β′1) and is or are coupled to the first connecting seat (10) having a clockwise angle (γ2) or said first selector (11) and / or said second selector (29) forms a clockwise angle (β2,β′ 2) and is or are coupled to the first connecting seat (10) having a counterclockwise angle (γ1), said crampon (1) is configured for a mountaineering or hiking boot (S2).