US Box Fin X1 V4 19cm Select SM040150019

US Box Fin X1 V4 19cm Select SM040150019

Description:

The Select X1.V4 19cm fin is a versatile US Box-compatible fin engineered for wave board setups, offering riders the ability to tune their board to Quad, Thruster, Twinzer or Single configurations. Constructed from durable, high-performance composite materials, the X1.V4 balances stiffness and flex to deliver reliable drive and predictable release through turns. Its size grid and box options let riders customize fin placement and setup to match style and local conditions, improving acceleration, hold and maneuverability. The fin’s streamlined profile reduces drag while maintaining lateral stability, making it efficient in a wide range of wave conditions. Durable construction and precision molding provide consistent performance over time, with a finish designed to resist impact and saltwater wear.

Key Features:

• Compatible with US Box systems for secure, tool-accessible mounting
• Universal X1.V4 design fits Quad, Thruster, Twinzer and Single setups
• High-performance composite construction for an optimal stiffness-to-flex ratio
• Streamlined profile reduces drag and improves water flow for better speed and acceleration
• Predictable release characteristics for confident turns and rail-to-rail transitions
• Durable molding and finish resist saltwater corrosion and everyday impacts
• Size-specific tuning (19 cm) for balanced drive and maneuverability in wave riding
• Lightweight design minimizes added mass while maintaining strength

Specifications:

Manufacturer: Select
SKU: SM040150019
Material: High-performance composite (manufacturer composition not specified)
Size/Dimensions: 19 cm (fin height)
Weight: Not specified
Color: Not specified
Size: 19cm
Category: Fins
Age Group: Adults
Gender: Unisex

Recommended Use:

Ideal for intermediate to advanced surfers and riders who want a flexible fin that adapts to multiple wave board configurations. Best suited for wave and small-to-medium surf conditions where maneuverability and controlled drive are priorities. Performs well in a variety of water conditions—from punchy beach breaks to point waves—when paired with other US Box-compatible fins and standard fin screws/shims.