The Starboard Balsa Core M4.7 Bio Resin side fins are designed for SUP boards equipped with FCS fin boxes. They are constructed using a low-density end-grain balsa core paired with bio-resin.
- Type: SUP side fins
- Core material: Low-density end-grain balsa wood
- Resin: Bio-resin
- Mounting system: FCS
- Package includes: Pair of fins (locking key not included)









