Balanced drive, clean release, and controlled quad speed — a performance DTR quad set built in Pro Glass for fast, stable surfing across modern boards.
The 4.9" / 3.1" DTR Quad Fin Set is engineered for surfers seeking dependable speed, hold, and smooth transition through turns. The larger 4.9" front fins deliver drive and projection, while the 3.1" rear stabilisers maintain control and release without excess drag.
The black on natural Pro Glass construction preserves consistent flex and long-term durability. The result is a balanced quad template suited to modern performance shapes, hybrids, and fast everyday surfboards.
This configuration supports clean rail engagement, efficient down-the-line speed, and predictable release through direction changes — ideal for surfers wanting quad performance without instability.
Specs
Front fins 4.9” high Rear fins 3.1” high Foil: all four fins flat inner face.
Key Features
4.9" front fins for drive, hold, and projection
3.1" rear fins for control and controlled release
Pro Glass construction for consistent flex and durability
Balanced DTR quad template for modern performance boards
Designed for reliable speed across varied wave conditions
Set of four fins
Ideal For
Performance shortboards and hybrid surfboards
Surfers seeking quad speed with controlled turning
Everyday beach breaks, points, and clean open faces
Riders wanting stability without sacrificing release
Quad fin setups are known for generating strong down-the-line speed and hold. If you’re unsure how quad fins differ from thruster setups, see our Quad vs Thruster Surfboard Fin Guide.
Choose DTR Quad Fins
This DTR quad configuration delivers a measured balance of projection, control, and responsiveness. Carbon reinforcement improves energy transfer through turns, while the Pro Glass structure maintains predictable flex. The result is dependable quad performance suited to a wide range of modern surfboards and wave types.
Compatibility
Fits FCS II fin box systems.
Not manufactured by or affiliated with FCS.
Frequently Asked Questions
Is this a full quad set?
Yes. The package includes two 4.9" front fins and two 3.1" rear fins.
What type of boards suit this template?
Modern shortboards, hybrids, and performance-oriented shapes designed for quad setups.
Learn more about surfboard fin performance and setup:
Surfboard Fin Guides — Setup, Size, Compatibility & Performance
A complete overview of how surfboard fins affect speed, turning, and control, including setup options and performance tuning
How to Choose the Right Fin Size for Your Board
Learn how fin height, base and surface area influence speed, hold and maneuverability so you can choose the best size for your board and weight.
Quad vs Thruster – Which Fin Setup Is Faster?
Understand the differences between quad and thruster fin setups, including how quad fins generate speed and down-the-line drive.
Surfboard Fin Materials Guide
Discover the performance differences between fiberglass, composite and carbon fins, and why Pro Glass construction delivers consistent flex and durability.
Summary
Performance DTR quad fin set with 4.9" front fins and 3.1" rear stabilisers. Built from Pro Glass for balanced flex, reliable speed, and controlled release. Designed to fit FCS II fin box systems and suited to modern shortboards and hybrids across varied surf conditions.
Balanced drive, clean release, and controlled quad speed — a performance DTR quad set built in Pro Glass for fast, stable surfing across modern boards.
The 4.9" / 3.1" DTR Quad Fin Set is engineered for surfers seeking dependable speed, hold, and smooth transition through turns. The larger 4.9" front fins deliver drive and projection, while the 3.1" rear stabilisers maintain control and release without excess drag.
The black on natural Pro Glass construction preserves consistent flex and long-term durability. The result is a balanced quad template suited to modern performance shapes, hybrids, and fast everyday surfboards.
This configuration supports clean rail engagement, efficient down-the-line speed, and predictable release through direction changes — ideal for surfers wanting quad performance without instability.
Specs
Front fins 4.9” high Rear fins 3.1” high Foil: all four fins flat inner face.
Key Features
4.9" front fins for drive, hold, and projection
3.1" rear fins for control and controlled release
Pro Glass construction for consistent flex and durability
Balanced DTR quad template for modern performance boards
Designed for reliable speed across varied wave conditions
Set of four fins
Ideal For
Performance shortboards and hybrid surfboards
Surfers seeking quad speed with controlled turning
Everyday beach breaks, points, and clean open faces
Riders wanting stability without sacrificing release
Quad fin setups are known for generating strong down-the-line speed and hold. If you’re unsure how quad fins differ from thruster setups, see our Quad vs Thruster Surfboard Fin Guide.
Choose DTR Quad Fins
This DTR quad configuration delivers a measured balance of projection, control, and responsiveness. Carbon reinforcement improves energy transfer through turns, while the Pro Glass structure maintains predictable flex. The result is dependable quad performance suited to a wide range of modern surfboards and wave types.
Compatibility
Fits FCS II fin box systems.
Not manufactured by or affiliated with FCS.
Frequently Asked Questions
Is this a full quad set?
Yes. The package includes two 4.9" front fins and two 3.1" rear fins.
What type of boards suit this template?
Modern shortboards, hybrids, and performance-oriented shapes designed for quad setups.
Learn more about surfboard fin performance and setup:
Surfboard Fin Guides — Setup, Size, Compatibility & Performance
A complete overview of how surfboard fins affect speed, turning, and control, including setup options and performance tuning
How to Choose the Right Fin Size for Your Board
Learn how fin height, base and surface area influence speed, hold and maneuverability so you can choose the best size for your board and weight.
Quad vs Thruster – Which Fin Setup Is Faster?
Understand the differences between quad and thruster fin setups, including how quad fins generate speed and down-the-line drive.
Surfboard Fin Materials Guide
Discover the performance differences between fiberglass, composite and carbon fins, and why Pro Glass construction delivers consistent flex and durability.
Summary
Performance DTR quad fin set with 4.9" front fins and 3.1" rear stabilisers. Built from Pro Glass for balanced flex, reliable speed, and controlled release. Designed to fit FCS II fin box systems and suited to modern shortboards and hybrids across varied surf conditions.
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