FCS Original K2.1 Small Thruster Fin Set (Used)

Upgrade your surfboard with this used FCS Original K2.1 Small Thruster Fin Set, one of the most popular all-around fin templates in the classic FCS lineup. Designed for lighter surfers and groms, the K2.1 offers an ideal balance of speed, drive, control, and maneuverability, making it a versatile choice for a wide range of surf conditions and board types.

The K2.1 features a balanced template with moderate rake, providing smooth rail-to-rail transitions, reliable hold through turns, and easy speed generation down the line. Its forgiving yet performance-oriented design makes it a great option for surfers progressing their skills as well as experienced riders looking for a dependable everyday fin setup.

Compatible with the FCS Original dual-tab fin system, this thruster fin set works exceptionally well in shortboards, hybrids, funboards, and everyday surfboard setups. Whether you're replacing a lost fin set or looking for an affordable performance upgrade, the K2.1 remains one of the most trusted fin templates ever produced by FCS.

This fin set is in used condition with normal cosmetic wear from regular use but remains fully functional and surf-ready.

Features

• Genuine FCS Original K2.1 Small Thruster Fin Set
• Compatible with FCS Original (dual-tab) fin boxes
• Small size ideal for lighter surfers and youth riders
• Balanced all-around template for speed, drive, and control
• Smooth rail-to-rail transitions and dependable hold
• Great for shortboards, hybrids, and daily-driver surfboards
• Performs well in a variety of wave conditions
• Used condition with normal signs of wear
• Fully functional and ready to surf