Premium Pro Glass side surfboard fins designed for smooth control and classic longboard 2+1 setups.
If you want balanced hold and smooth turning from a longboard 2+1 setup, these 3.7" classic side surfboard fins provide the ideal blend of stability and flow.
They are commonly used with:
• Longboards with a 2+1 fin setup
• Mid-length surfboards needing extra rail control
• Surfers wanting smooth carving rather than twitchy response
Add stability and rail control to your longboard or mid-length with 3.7" classic side surfboard fins built from solid Pro Glass fiberglass.
Designed for Futures compatible fin boxes, these side fins help your board track cleanly through turns while maintaining the flowing feel of traditional surfboards.
These fins fit:
Futures fin box systems
They will work in:
• Longboard 2+1 fin setups
• Mid-length side bite configurations
• Performance longboards with side fins
Board Match Guide
These side fins pair well with:
Board type examples:
• Longboards 8'0" – 10'+
• Mid-length boards 6'8" – 8'0"
• Funboards 7'0" – 8'0"
Used as side fins alongside a center fin.
If your longboard feels too loose or unstable, adding these 3.7" side surfboard fins provides the extra hold needed for confident turns and improved rail engagement.
Specs
Fin height (depth) 3.7 inches, Base 3.55 inches, Foil flat inside face Tab 3/4” Cant 4 degrees Area 8.2” Aspect Ratio 1.67 Sweep (Rake) 19 degrees
This is typical of performance longboard side bites, where the smaller base improves turning response.
Construction: Pro Glass fiberglass
Compatibility: Futures fin boxes
Fin configuration: Side fins (pair)
Number of fins: Two
Template style: Classic side bite
Side fins play an important role in a 2+1 surfboard setup.
The center fin provides primary drive and stability, while the side fins increase rail engagement and turning control.
A 3.7" side fin size works well for most longboards and mid-lengths because it adds control without making the board feel stiff or difficult to turn.
Ideal For
These fins work well for:
• Traditional longboards
• Performance longboards
• Mid-length surfboards
• Surfers wanting smoother rail control
Choose 3.7" Classic Side Surfboard Fins
Surfers choose these fins because they provide:
• Smooth carving turns
• Added stability in longboards
• Durable fiberglass construction
• Reliable performance in everyday surf
Performance Comparison
Compared with other setups:
Thruster fins
Provide tight turning but less trim stability
Quad fins
Very fast but less predictable for traditional longboards
2+1 setups with side fins
Offer balanced control, smooth turns and classic flow
Surfboard Fin Knowledge Hub
Learn more about surfboard fins in our Eveley guides:
• Surfboard Fins Australia – Complete Buyer’s Guide Learn fin types, sizing, materials and setups, then shop high-performance fiberglass surfboard fins from Eveley Australia.
• Futures Compatible Fins Explained Complete guide to Futures-compatible fins. Learn how Futures fin systems work, what fits where, and how to choose the right fins with confidence.
• Beginner’s Guide to Surfboard Fins This beginner-friendly guide explains fin setups, sizes and materials so you can choose the right fins for stability and control.
These articles explain fin types, sizes and compatibility to help surfers choose the right setup.
FAQs
What are side surfboard fins used for?
Side fins increase stability and rail control when used with a center fin in a 2+1 setup.
What boards use side fins?
Most commonly longboards, mid-lengths and funboards.
Are these fins suitable for beginners?
Yes. Side fins help stabilise larger boards, making them easier to control.
What material are these fins made from?
They are made from Pro Glass fiberglass, a durable and consistent performance material.
Futures™ is a registered trademark of Futures Fins. Eveley Surf is not affiliated with or endorsed by Futures Fins. All compatibility references are for descriptive purposes only.
Premium Pro Glass side surfboard fins designed for smooth control and classic longboard 2+1 setups.
If you want balanced hold and smooth turning from a longboard 2+1 setup, these 3.7" classic side surfboard fins provide the ideal blend of stability and flow.
They are commonly used with:
• Longboards with a 2+1 fin setup
• Mid-length surfboards needing extra rail control
• Surfers wanting smooth carving rather than twitchy response
Add stability and rail control to your longboard or mid-length with 3.7" classic side surfboard fins built from solid Pro Glass fiberglass.
Designed for Futures compatible fin boxes, these side fins help your board track cleanly through turns while maintaining the flowing feel of traditional surfboards.
These fins fit:
Futures fin box systems
They will work in:
• Longboard 2+1 fin setups
• Mid-length side bite configurations
• Performance longboards with side fins
Board Match Guide
These side fins pair well with:
Board type examples:
• Longboards 8'0" – 10'+
• Mid-length boards 6'8" – 8'0"
• Funboards 7'0" – 8'0"
Used as side fins alongside a center fin.
If your longboard feels too loose or unstable, adding these 3.7" side surfboard fins provides the extra hold needed for confident turns and improved rail engagement.
Specs
Fin height (depth) 3.7 inches, Base 3.55 inches, Foil flat inside face Tab 3/4” Cant 4 degrees Area 8.2” Aspect Ratio 1.67 Sweep (Rake) 19 degrees
This is typical of performance longboard side bites, where the smaller base improves turning response.
Construction: Pro Glass fiberglass
Compatibility: Futures fin boxes
Fin configuration: Side fins (pair)
Number of fins: Two
Template style: Classic side bite
Side fins play an important role in a 2+1 surfboard setup.
The center fin provides primary drive and stability, while the side fins increase rail engagement and turning control.
A 3.7" side fin size works well for most longboards and mid-lengths because it adds control without making the board feel stiff or difficult to turn.
Ideal For
These fins work well for:
• Traditional longboards
• Performance longboards
• Mid-length surfboards
• Surfers wanting smoother rail control
Choose 3.7" Classic Side Surfboard Fins
Surfers choose these fins because they provide:
• Smooth carving turns
• Added stability in longboards
• Durable fiberglass construction
• Reliable performance in everyday surf
Performance Comparison
Compared with other setups:
Thruster fins
Provide tight turning but less trim stability
Quad fins
Very fast but less predictable for traditional longboards
2+1 setups with side fins
Offer balanced control, smooth turns and classic flow
Surfboard Fin Knowledge Hub
Learn more about surfboard fins in our Eveley guides:
• Surfboard Fins Australia – Complete Buyer’s Guide Learn fin types, sizing, materials and setups, then shop high-performance fiberglass surfboard fins from Eveley Australia.
• Futures Compatible Fins Explained Complete guide to Futures-compatible fins. Learn how Futures fin systems work, what fits where, and how to choose the right fins with confidence.
• Beginner’s Guide to Surfboard Fins This beginner-friendly guide explains fin setups, sizes and materials so you can choose the right fins for stability and control.
These articles explain fin types, sizes and compatibility to help surfers choose the right setup.
FAQs
What are side surfboard fins used for?
Side fins increase stability and rail control when used with a center fin in a 2+1 setup.
What boards use side fins?
Most commonly longboards, mid-lengths and funboards.
Are these fins suitable for beginners?
Yes. Side fins help stabilise larger boards, making them easier to control.
What material are these fins made from?
They are made from Pro Glass fiberglass, a durable and consistent performance material.
Futures™ is a registered trademark of Futures Fins. Eveley Surf is not affiliated with or endorsed by Futures Fins. All compatibility references are for descriptive purposes only.
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