Lightcarbon offers 2 different fork length versions? That be 2 molds for every frame size, as the geometry needs to have different seat tube and head tube angles.
By what I've found fork length for this frame is 520mm that's a fork with 110mm suspension.
A 120mm fork has a length of 530mm, a 100mm fork a length of 506mm, at least RockShox forks, but this should be universal.