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10" International 4A Center Fin in black Pro Glass
Traditional longboard control with durable solid Pro Glass construction and International 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 black Pro Glass fibreglass, the fin provides consistent flex characteristics and structural durability suited to everyday surf use.
The International 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" International 4A single-fin template
Solid black Pro Glass fibreglass construction
Balanced rake and base for trim stability and smooth turning
Firm flex for predictable response
Durable construction suited to regular surf conditions
Single center fin supplied individually
Specs
Depth 10” Base 7.1”
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.
10" black Pro Glass International 4A longboard center fin designed for sliding center fin boxes. 4A single-fin template delivering stable trim, smooth carving turns, and reliable noseriding control for traditional and performance longboards.
Surfboard Fins Knowledge Hub
Surfboard Fins Australia – Complete Buyer's Guide
Why the 4A Center Fin Still Dominates Surfboard Fins Performance
Sliding Center Fin Box Explained (US / Bahne box)
Single Fin vs 2+1 Longboard Setup — Which Should You Choose?
4A vs Logger Longboard Fin – Which Holds Better?
Pivot vs 4A vs Logger Longboard Fin – Which Should You Choose?
Traditional longboard control with durable solid Pro Glass construction and International 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 black Pro Glass fibreglass, the fin provides consistent flex characteristics and structural durability suited to everyday surf use.
The International 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" International 4A single-fin template
Solid black Pro Glass fibreglass construction
Balanced rake and base for trim stability and smooth turning
Firm flex for predictable response
Durable construction suited to regular surf conditions
Single center fin supplied individually
Specs
Depth 10” Base 7.1”
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.
10" black Pro Glass International 4A longboard center fin designed for sliding center fin boxes. 4A single-fin template delivering stable trim, smooth carving turns, and reliable noseriding control for traditional and performance longboards.
Surfboard Fins Knowledge Hub
Surfboard Fins Australia – Complete Buyer's Guide
Why the 4A Center Fin Still Dominates Surfboard Fins Performance
Sliding Center Fin Box Explained (US / Bahne box)
Single Fin vs 2+1 Longboard Setup — Which Should You Choose?
4A vs Logger Longboard Fin – Which Holds Better?
Pivot vs 4A vs Logger Longboard Fin – Which Should You Choose?
We include
Free Delivery: Everywhere in Australia.
Tracking: Quick & easy online tracking on all fins and wetsuits.
Peace of Mind: All our fins and wetsuits are insured if lost in transit.
Prompt Australian Dispatch: All items are sent from stock held in Sydney.
Returns: 30-day “no questions asked” returns for unused full price items.
No More to Pay: No surcharges added at the checkout.
Express Delivery: Just $10 per order.