4.17 inch Dynamic side fins in volan Pro Glass FCS II compatible
Longboard side fins installed in FCS II fin boxes
4.17 inch Dynamic side fins in volan Pro Glass FCS II compatible
Longboard side fins installed in FCS II fin boxes

4.17" Dynamic Side Fins – Volan Pro Glass (FCS II Compatible, Set of 2).

$70.00

Fast, responsive side fins with smooth hold — Dynamic 4.17" sides add drive and control without feeling stiff.

Discover what Volan fiberglass is, why classic surfboard fins use it, and how it differs from modern Pro Glass fin construction.

Fast, responsive side fins with smooth hold — Dynamic 4.17" sides add drive and control without feeling stiff.

Discover what Volan fiberglass is, why classic surfboard fins use it, and how it differs from modern Pro Glass fin construction.

Small Wax Comb with Integrated Fin Key.
Small Wax Comb with Integrated Fin Key.
$6.90

FCSII compatible. Depth 4.17" Base 4" Foil: flat inside face

The 4.17" Dynamic Side Fins are designed to deliver balanced drive, speed, and responsiveness when used as side fins in 2+1, thruster-style longboards, or performance single-fin setups. Their refined template provides reliable hold through turns while maintaining a smooth, flowing feel down the line.

Constructed from premium volan Pro Glass, these fins feature a dampened, organic flex pattern that enhances control and smooths out chatter, particularly in smaller or softer conditions. The 4.17" size offers excellent versatility — large enough to provide confidence and bite, yet refined enough to keep the board lively and fast.

FCS II compatibility allows for tool-free installation, making fin changes quick and easy between sessions.

Key Features

  • Fin Type: Dynamic side fins

  • Size: 4.17"

  • Construction: Volan Pro Glass (fiberglass)

  • Flex Pattern: Medium, smooth, and predictable

  • Foil: Clean, hand-finished foil for efficient water flow

  • Compatibility: FCS II compatible

  • Set Includes: 2 fins (left and right)

Ideal For

  • 2+1 longboard setups

  • Performance longboards and mid-lengths

  • Single-fin boards needing added control

  • Small to medium surf conditions

Why Choose the 4.17" Dynamic Side Fins?

  • Adds drive and stability without sacrificing speed

  • Smooth, controlled rail engagement

  • Volan Pro Glass delivers classic feel and durability

  • Tool-free FCS II installation for convenience

FAQs

Can these be used as thruster side fins?
Yes. The 4.17" Dynamic fins work well as side fins in thruster-style longboards and performance-oriented 2+1 setups.

Do these fins require screws?
No. As FCS II compatible fins, they install and remove without tools.

What does volan Pro Glass change compared to standard fiberglass?
Volan Pro Glass provides a smoother flex and slightly heavier feel, improving control, glide, and longevity.

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 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 Shipping just $10 per order.