4.5" Progressive Thruster Fins – Ash Pro Glass FCS II Compatible | Thruster Fin Set (3 fins)

FCSII compatible. Depth 4.5" Base 4.4" Foil flat inside face on side fins, 50/50 on center fin.

The 4.5" Progressive Thruster Fin Set is designed to deliver a smooth blend of drive, control, and release in a versatile thruster configuration. With a progressive template that transitions cleanly from base to tip, these fins provide predictable hold through turns while maintaining flow and responsiveness.

Constructed from ash Pro Glass fiberglass, the fins offer a balanced, familiar flex that suits a wide range of conditions and board types. Fully FCS II compatible, the tool-free click-in system allows fast installation and removal without compromising stability.

This is a set of three fins, intended for standard thruster setups on performance shortboards and hybrids.

Key Features

• Progressive thruster fin template for balanced performance

• 4.5" size suited to a wide range of surfers and boards

• Ash Pro Glass fiberglass construction

• Smooth flex for drive with controlled release

• Tool-free FCS II compatible click-in system

• Thruster fin set (3 fins total)

Ideal For

• Thruster fin surfboards

• Performance shortboards and hybrids

• Surfers wanting predictable control with smooth transitions

• Small to medium waves and everyday conditions

Why Choose Progressive Thruster Fins?

The progressive template offers a reliable middle ground between drive and maneuverability. These fins feel secure under pressure yet remain forgiving through direction changes, making them an excellent everyday option. The Pro Glass construction delivers consistency session after session, while the FCS II compatible system keeps setup simple and tool-free.

Fin Specifications

• Configuration: Thruster

• Fin Size: 4.5"

• Material: Pro Glass fiberglass

• Colour: Ash

• Compatibility: FCS II fin boxes

• Set: 3 fins

Will this fit my board?

Yes. This fin set fits FCS II fin boxes commonly used on modern performance shortboards and hybrid surfboards.

What this fin does

If you ride a thruster-equipped surfboard, this fin setup helps balance drive and control, resulting in smooth, confident turns with predictable hold through critical sections.

Best for

Best for surfers who want reliable, all-round thruster performance without the overly stiff feel of highly upright or oversized fin templates.

How it compares

Compared to more upright or pivot-focused thruster fins, this progressive template offers smoother transitions and a more flowing feel, making it a better choice for everyday surfing across varied conditions.

Local relevance

Designed to suit boards and conditions commonly surfed across Australian beach breaks and point waves.

FAQs

Will these fins fit my board?
Yes. They are designed for FCS II fin boxes used on many modern thruster setups.

Do I need a fin key to install them?
No. The FCS II system allows tool-free installation and removal.

What type of waves suit these fins best?
They perform well in small to medium waves and everyday surf conditions.

Is Pro Glass suitable for regular use?
Yes. Pro Glass fiberglass offers durability with a predictable, balanced flex.

We include

Free Delivery: Everywhere in Australia.

Tracking: Quick & easy online tracking on all fins. 

Peace of Mind: All our fins are insured against loss 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.

Enjoy faster Express Shipping just $10 per order at the checkout.