Traditional longboard control with durable solid Pro Glass construction and classic 4A template balance.
The 10" International 4A Center Fin is a traditional single-fin template developed for controlled trim, smooth turning response, and dependable hold in longboard surfboards. Manufactured from solid bright green Pro Glass fibreglass, the fin provides consistent flex characteristics and structural durability suited to everyday surf use.
The classic 4A-style outline combines a balanced base, moderate rake, and refined tip profile to support predictable rail-to-rail transitions while maintaining stability during noseriding and drawn-out turns. Its 10-inch depth is suited to full-length longboards requiring reliable tracking and smooth directional control.
Designed for installation in standard longboard center fin systems.
Key features
10" classic International 4A single-fin template
Solid bright green Pro Glass fibreglass construction
Balanced rake and base for trim stability and smooth turning
Consistent flex pattern for predictable response
Durable laminate suited to regular surf conditions
Single center fin supplied individually
Ideal for
Traditional and performance longboards
Noseriding with controlled hold and stability
Smooth carving turns and extended trim lines
Replacement or upgrade of existing single-fin setups
Why choose this product
Proven 4A-style template offering balanced longboard performance
Solid Pro Glass construction for durability and consistent flex
Suitable depth for full-size longboards requiring dependable tracking
Neutral design compatible with a wide range of longboard outlines
Compatibility
Designed for longboards using a sliding center fin box.
Not compatible with FCS, FCS II, or Futures plug systems.
Frequently Asked Questions
What does “International 4A” refer to?
It identifies a classic longboard fin template style known for balanced trim, smooth turning, and reliable hold.
Is a 10" fin suitable for all longboards?
A 10" center fin is typically suited to mid-to-full length longboards, though exact sizing depends on board length, tail width, and rider preference.
What is Pro Glass construction?
Pro Glass is a solid fibreglass laminate that provides durability, consistent flex behaviour, and long service life compared with lightweight composite materials.
Summary
10" bright green Pro Glass International 4A longboard center fin designed for sliding center fin boxes. Classic single-fin template delivering stable trim, smooth carving turns, and reliable noseriding control for traditional and performance longboards.
Traditional longboard control with durable solid Pro Glass construction and classic 4A template balance.
The 10" International 4A Center Fin is a traditional single-fin template developed for controlled trim, smooth turning response, and dependable hold in longboard surfboards. Manufactured from solid bright green Pro Glass fibreglass, the fin provides consistent flex characteristics and structural durability suited to everyday surf use.
The classic 4A-style outline combines a balanced base, moderate rake, and refined tip profile to support predictable rail-to-rail transitions while maintaining stability during noseriding and drawn-out turns. Its 10-inch depth is suited to full-length longboards requiring reliable tracking and smooth directional control.
Designed for installation in standard longboard center fin systems.
Key features
10" classic International 4A single-fin template
Solid bright green Pro Glass fibreglass construction
Balanced rake and base for trim stability and smooth turning
Consistent flex pattern for predictable response
Durable laminate suited to regular surf conditions
Single center fin supplied individually
Ideal for
Traditional and performance longboards
Noseriding with controlled hold and stability
Smooth carving turns and extended trim lines
Replacement or upgrade of existing single-fin setups
Why choose this product
Proven 4A-style template offering balanced longboard performance
Solid Pro Glass construction for durability and consistent flex
Suitable depth for full-size longboards requiring dependable tracking
Neutral design compatible with a wide range of longboard outlines
Compatibility
Designed for longboards using a sliding center fin box.
Not compatible with FCS, FCS II, or Futures plug systems.
Frequently Asked Questions
What does “International 4A” refer to?
It identifies a classic longboard fin template style known for balanced trim, smooth turning, and reliable hold.
Is a 10" fin suitable for all longboards?
A 10" center fin is typically suited to mid-to-full length longboards, though exact sizing depends on board length, tail width, and rider preference.
What is Pro Glass construction?
Pro Glass is a solid fibreglass laminate that provides durability, consistent flex behaviour, and long service life compared with lightweight composite materials.
Summary
10" bright green Pro Glass International 4A longboard center fin designed for sliding center fin boxes. Classic single-fin template delivering stable trim, smooth carving turns, and reliable noseriding control for traditional and performance longboards.
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