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Finjak™ – Tool-Free Center Fin Installation for Sliding Fin Boxes
Change and adjust your center fin in seconds—no screwdriver, loose screw or separate fin plate required.
Finjak is a tool-free mounting system that makes fitting and adjusting center surfboard fins faster and easier.
Choose Finjak if you want:
Tool-free installation for a center fin
Quick forward or backward fin-position adjustments
One compact fitting instead of a traditional screw and plate
A convenient solution for longboards, mid-lengths and single-fin boards
Less loose hardware to carry or misplace
A genuine USA-made Finjak supplied by Eveley Surf
Compatible with: Center fins fitted to a standard sliding center fin box.
Fin position can noticeably change how a board performs. Move the fin forward for a looser, more responsive feel, or move it back for greater hold, stability and noseriding control. Finjak makes these adjustments easy at home, in the car park or between surfs.
Technical Specs
Product type: Tool-free center-fin mounting system
Purpose: Installs and secures one center fin without a screwdriver
Fin-box compatibility: Standard sliding center fin boxes
Suitable boards: Longboards, mid-lengths, single-fin boards, 2+1 setups and compatible Bonzer-style boards
Installation: Fitted and tightened by hand
Fin adjustment: Allows the center fin to be repositioned along the fin box
Available colours: White, black, green and blue
Manufactured: USA
Package includes: One genuine Finjak mounting device
Surfboard fin included: No
Dispatch: Stock held in Sydney
Australian delivery: Free tracked delivery with transit insurance
Express delivery: Available for $10 per order
Returns: 30-day returns for unused, full-price items
Finjak is a compact, hand-tightened mounting device that replaces the conventional center-fin screw and plate. It allows surfers to install, secure and reposition a center fin in a standard sliding fin box without using a screwdriver.
Eveley Surfboard Fin Knowledge Hub
Learn how to install, position and select surfboard fins for different boards and surfing styles:
Sliding Center Fin Box Guide—Installation, Adjustment and Fin Position
Longboard Fin Setup Guide—Single Fin, 2+1 and Performance Options
Explore these guides to understand how center-fin size, template and position influence hold, turning and trim—and how Eveley fins can help tune your board for different waves.
These genuine Finjaks are manufactured in USA and held as stock ready for immediate dispatch from our Sydney Northern Beaches warehouse.
We include
Free tracked delivery with insurance: Everywhere in Australia on Finjak.
Prompt Australian Dispatch: All items are sent from stock held in Sydney on the same or next business day.
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.
Change and adjust your center fin in seconds—no screwdriver, loose screw or separate fin plate required.
Finjak is a tool-free mounting system that makes fitting and adjusting center surfboard fins faster and easier.
Choose Finjak if you want:
Tool-free installation for a center fin
Quick forward or backward fin-position adjustments
One compact fitting instead of a traditional screw and plate
A convenient solution for longboards, mid-lengths and single-fin boards
Less loose hardware to carry or misplace
A genuine USA-made Finjak supplied by Eveley Surf
Compatible with: Center fins fitted to a standard sliding center fin box.
Fin position can noticeably change how a board performs. Move the fin forward for a looser, more responsive feel, or move it back for greater hold, stability and noseriding control. Finjak makes these adjustments easy at home, in the car park or between surfs.
Technical Specs
Product type: Tool-free center-fin mounting system
Purpose: Installs and secures one center fin without a screwdriver
Fin-box compatibility: Standard sliding center fin boxes
Suitable boards: Longboards, mid-lengths, single-fin boards, 2+1 setups and compatible Bonzer-style boards
Installation: Fitted and tightened by hand
Fin adjustment: Allows the center fin to be repositioned along the fin box
Available colours: White, black, green and blue
Manufactured: USA
Package includes: One genuine Finjak mounting device
Surfboard fin included: No
Dispatch: Stock held in Sydney
Australian delivery: Free tracked delivery with transit insurance
Express delivery: Available for $10 per order
Returns: 30-day returns for unused, full-price items
Finjak is a compact, hand-tightened mounting device that replaces the conventional center-fin screw and plate. It allows surfers to install, secure and reposition a center fin in a standard sliding fin box without using a screwdriver.
Eveley Surfboard Fin Knowledge Hub
Learn how to install, position and select surfboard fins for different boards and surfing styles:
Sliding Center Fin Box Guide—Installation, Adjustment and Fin Position
Longboard Fin Setup Guide—Single Fin, 2+1 and Performance Options
Explore these guides to understand how center-fin size, template and position influence hold, turning and trim—and how Eveley fins can help tune your board for different waves.
These genuine Finjaks are manufactured in USA and held as stock ready for immediate dispatch from our Sydney Northern Beaches warehouse.
We include
Free tracked delivery with insurance: Everywhere in Australia on Finjak.
Prompt Australian Dispatch: All items are sent from stock held in Sydney on the same or next business day.
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.