One Drop Side Effects are a customisable axle system that allows for the customisation of your yoyo. The Side Effects can be used to change both the appliance and weight distribution of select models. By also capturing the axle, they have the additional benefit of eliminating the possibility of stripping the thread within the yoyo. Suitable for the following models.
- Kamuraiju
- Terrarian
- Still Rolling
- Fat Tire
- Panorama