US Box Fin X1 V4 20cm Select SM040150020

US Box Fin X1 V4 20cm Select SM040150020

Description:

The Select X1.V4 20cm is a versatile US-box fin engineered to fit a wide range of wave board setups — quad, thruster, twinzer or single — so riders can dial in the exact feel for their discipline and conditions. Built from a high-strength fiberglass-reinforced composite, the X1.V4 balances stiffness and flex to deliver reliable drive and a predictable release off the lip. Its refined foil and base profile provide efficient water flow, improving acceleration and tracking while minimizing drag through critical turns. The fin’s durable construction stands up to repeated impact and exposure to saltwater, keeping its shape and performance over time. Lightweight and streamlined, the X1.V4 helps reduce rider fatigue and enhances responsiveness, making it suitable for both progressive wave riders and those seeking a dependable everyday fin. Easy US-box installation lets you swap setups quickly without tools, enabling fast adjustments between sessions or wave conditions.

Key Features:

• High-strength fiberglass-reinforced composite construction for durability and consistent flex
• Universal wave template tuned for quads, thrusters, twinzers and single-fin configurations
• Optimized foil and base geometry for improved drive, acceleration and release
• Streamlined profile reduces drag for cleaner turns and better top-end speed
• Robust leading edge and tip design to resist dings and maintain performance
• Lightweight construction to reduce rider fatigue and increase responsiveness
• Quick, tool-free US box compatibility for easy setup changes between sessions
• Versatile performance suitable for a wide range of wave sizes and rider styles

Specifications:

• Manufacturer: Select
• SKU: SM040150020
• Material: Fiberglass-reinforced composite (high-strength performance composite)
• Size/Dimensions: 20 cm height (standard US-box wave fin sizing)
• Weight: Lightweight construction (typical for 20 cm performance fins)
• Color: Black (as shown)
• Category: Fins
• Age Group: Adults
• Gender: Unisex

Recommended Use:

Ideal for intermediate to advanced wave riders and any surfer who needs a single fin that can be reconfigured across multiple setups. Best suited for wave riding — from small, punchy beach breaks to overhead surf — where control, drive and quick release are priorities. Performs well in variable ocean conditions and is particularly effective when you want a responsive, versatile fin that adapts to quads, thrusters, twinzer or single-fin rigs. Pair with your standard US-box-equipped board; no special accessories required beyond standard fin keys or clips if your setup uses them.