The most balanced longboard center fin ever designed.
The 8.5" Eveley International 4A Center Fin in green Pro Glass delivers the legendary combination of drive, trim stability and smooth turning that made the 4A template famous.
Ideal for classic longboards, mid-lengths and 2+1 setups, this fin provides reliable hold with flowing rail-to-rail transitions in a wide range of surf conditions.
Hand-finished Pro Glass fiberglass construction delivers the strength, control and flex response serious surfers expect.
Instant Fit Guide
Fin Box Compatibility:
✔ Fits standard longboard fin boxes (US / Bahne box)
Board Types:
• Longboards
• Mid-length surfboards
• 2+1 setups
Recommended Board Length:
• 7'6" – 9'6"
If you're unsure which fin size you need, see:
Longboard Fin Size Guide
✔ Classic 4A template for balanced performance
✔ Premium solid fiberglass Pro Glass construction
✔ Excellent drive, trim control and smooth turning
✔ Ideal for longboards and mid-length surfboards
✔ Precision fit for standard longboard fin boxes (US / Bahne box)
Description
The Eveley 8.5" International 4A Center Fin is one of the most versatile longboard fin designs ever created.
The famous 4A template blends drive, hold and turning freedom, making it suitable for a wide range of boards and surf styles. Unlike pivot-heavy fins that lock the tail, the 4A design allows the board to flow through turns while maintaining solid trim control.
This makes it an excellent choice for:
• classic longboard trimming
• mid-length carving
• balanced 2+1 setups
Constructed from Pro Glass fiberglass, the fin delivers a predictable flex pattern and exceptional durability, ensuring reliable performance session after session.
The 8.5" size sits in the sweet spot for many surfers — large enough for strong hold, yet responsive enough to keep the board lively through turns.
Specs
Fin Height: 8.5"
Template: International 4A
Construction: Pro Glass fiberglass
Colour: Translucent green
Fin Box: Standard longboard box (US / Bahne)
Setup: Center fin or 2+1 configuration
Performance & Sizing
How the 8.5" 4A Fin Rides
The 4A template offers a balanced performance profile, making it one of the most widely used longboard fin shapes.
Compared with pivot-style fins, it provides:
• smoother carving turns
• improved down-the-line speed
• more flowing rail transitions
Typical sizing guidance:
Recommended Fin Size by Board Length
Boards 7'6" – 8'6" work best with a 7.5" – 8.5" center fin.
Boards 8'6" – 9'2" typically suit an 8" – 9" center fin.
Boards 9'2" – 9'6"+ generally perform best with a 9" – 10" center fin.
This is a simple starting point — moving slightly larger increases hold and stability, while going slightly smaller makes the board turn more easily.
Key Features
Legendary 4A Template
A proven design that balances drive, trim stability and turning freedom.
Premium Pro Glass Construction
Solid fiberglass layers provide strength, durability and controlled flex.
Versatile Performance
Works equally well in single-fin longboards or 2+1 setups.
Smooth Rail Transitions
Allows clean carving turns without excessive drag.
Reliable Hold
Maintains control in a wide range of wave conditions.
Ideal For
This fin works best for surfers who want:
• Classic longboard trim and flow
• Smooth carving turns
• Balanced control in 2+1 setups
• A versatile fin that suits many board types
Perfect for:
• Longboards
• Mid-length surfboards
• Single fin setups
• 2+1 surfboards
Choose Eveley
Performance-Driven Design
Every Eveley fin template is selected for real-world surf performance.
Premium Fiberglass Materials
Pro Glass construction delivers long lifespan and predictable flex.
Tested in Australian Conditions
Designed for the varied waves surfers actually ride.
Clean Functional Design
No gimmicks — just fins that work.
Performance Comparison
How Different Longboard Fins Feel in the Water
A 7" Pivot fin gives tight tail control, making it ideal for nose riding and holding the board steady while walking the board.
An 8.5" 4A fin offers balanced turning and smooth trimming, making it a great all-round choice for most longboard surfing.
A 9"+ classic fin provides maximum hold and stability, which suits traditional longboard trimming and drawn-out lines.
More on fin templates here:
Longboard Fin Buyer Guide
Surfboard Fin Knowledge Hub
Improve your fin knowledge:
Beginner’s Guide to Surfboard Fins
Surfboard Fin Size Guide
Fiberglass vs Honeycomb Fins
Classic Longboard Fin Guide
Surfboard Fins Australia – Complete Guide
FAQs
What boards work best with an 8.5" center fin?
The 8.5" size works well with mid-length boards and many longboards, especially in 2+1 setups.
Is the 4A fin good for beginners?
Yes. The balanced template provides predictable stability and easy turning, making it beginner friendly.
Can this fin be used as a single fin?
Yes. It performs very well as a single fin on mid-lengths and smaller longboards.
What material is Pro Glass?
Pro Glass is solid fiberglass construction, known for its strength, durability and consistent flex.
The most balanced longboard center fin ever designed.
The 8.5" Eveley International 4A Center Fin in green Pro Glass delivers the legendary combination of drive, trim stability and smooth turning that made the 4A template famous.
Ideal for classic longboards, mid-lengths and 2+1 setups, this fin provides reliable hold with flowing rail-to-rail transitions in a wide range of surf conditions.
Hand-finished Pro Glass fiberglass construction delivers the strength, control and flex response serious surfers expect.
Instant Fit Guide
Fin Box Compatibility:
✔ Fits standard longboard fin boxes (US / Bahne box)
Board Types:
• Longboards
• Mid-length surfboards
• 2+1 setups
Recommended Board Length:
• 7'6" – 9'6"
If you're unsure which fin size you need, see:
Longboard Fin Size Guide
✔ Classic 4A template for balanced performance
✔ Premium solid fiberglass Pro Glass construction
✔ Excellent drive, trim control and smooth turning
✔ Ideal for longboards and mid-length surfboards
✔ Precision fit for standard longboard fin boxes (US / Bahne box)
Description
The Eveley 8.5" International 4A Center Fin is one of the most versatile longboard fin designs ever created.
The famous 4A template blends drive, hold and turning freedom, making it suitable for a wide range of boards and surf styles. Unlike pivot-heavy fins that lock the tail, the 4A design allows the board to flow through turns while maintaining solid trim control.
This makes it an excellent choice for:
• classic longboard trimming
• mid-length carving
• balanced 2+1 setups
Constructed from Pro Glass fiberglass, the fin delivers a predictable flex pattern and exceptional durability, ensuring reliable performance session after session.
The 8.5" size sits in the sweet spot for many surfers — large enough for strong hold, yet responsive enough to keep the board lively through turns.
Specs
Fin Height: 8.5"
Template: International 4A
Construction: Pro Glass fiberglass
Colour: Translucent green
Fin Box: Standard longboard box (US / Bahne)
Setup: Center fin or 2+1 configuration
Performance & Sizing
How the 8.5" 4A Fin Rides
The 4A template offers a balanced performance profile, making it one of the most widely used longboard fin shapes.
Compared with pivot-style fins, it provides:
• smoother carving turns
• improved down-the-line speed
• more flowing rail transitions
Typical sizing guidance:
Recommended Fin Size by Board Length
Boards 7'6" – 8'6" work best with a 7.5" – 8.5" center fin.
Boards 8'6" – 9'2" typically suit an 8" – 9" center fin.
Boards 9'2" – 9'6"+ generally perform best with a 9" – 10" center fin.
This is a simple starting point — moving slightly larger increases hold and stability, while going slightly smaller makes the board turn more easily.
Key Features
Legendary 4A Template
A proven design that balances drive, trim stability and turning freedom.
Premium Pro Glass Construction
Solid fiberglass layers provide strength, durability and controlled flex.
Versatile Performance
Works equally well in single-fin longboards or 2+1 setups.
Smooth Rail Transitions
Allows clean carving turns without excessive drag.
Reliable Hold
Maintains control in a wide range of wave conditions.
Ideal For
This fin works best for surfers who want:
• Classic longboard trim and flow
• Smooth carving turns
• Balanced control in 2+1 setups
• A versatile fin that suits many board types
Perfect for:
• Longboards
• Mid-length surfboards
• Single fin setups
• 2+1 surfboards
Choose Eveley
Performance-Driven Design
Every Eveley fin template is selected for real-world surf performance.
Premium Fiberglass Materials
Pro Glass construction delivers long lifespan and predictable flex.
Tested in Australian Conditions
Designed for the varied waves surfers actually ride.
Clean Functional Design
No gimmicks — just fins that work.
Performance Comparison
How Different Longboard Fins Feel in the Water
A 7" Pivot fin gives tight tail control, making it ideal for nose riding and holding the board steady while walking the board.
An 8.5" 4A fin offers balanced turning and smooth trimming, making it a great all-round choice for most longboard surfing.
A 9"+ classic fin provides maximum hold and stability, which suits traditional longboard trimming and drawn-out lines.
More on fin templates here:
Longboard Fin Buyer Guide
Surfboard Fin Knowledge Hub
Improve your fin knowledge:
Beginner’s Guide to Surfboard Fins
Surfboard Fin Size Guide
Fiberglass vs Honeycomb Fins
Classic Longboard Fin Guide
Surfboard Fins Australia – Complete Guide
FAQs
What boards work best with an 8.5" center fin?
The 8.5" size works well with mid-length boards and many longboards, especially in 2+1 setups.
Is the 4A fin good for beginners?
Yes. The balanced template provides predictable stability and easy turning, making it beginner friendly.
Can this fin be used as a single fin?
Yes. It performs very well as a single fin on mid-lengths and smaller longboards.
What material is Pro Glass?
Pro Glass is solid fiberglass construction, known for its strength, durability and consistent flex.
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