New Eco blend construction. Designed for fast tight turns, the Neo Glass Reactor also features a slightly smaller centre fin to allow for added tail release.

Eco Blend
Constructed with 50% glass and bio-resin, the Neo Glass Eco Blend range focuses on low-impact construction with reduced use of fossil fuels and a smaller carbon footprint than traditional materials. Low impact construction with high impact performance that’s recommended for lightweight and more agile surfers.

Availability: Out of Stock – We understand the frustration when the product you're looking for is unavailable. At Down the Line Surf, we constantly update our inventory. New stock may be coming in soon. Give us a call on +44 (0)1736 757025 or submit your email below to be notified when new stock arrives. Thank you for choosing Down the Line Surf!


  • Colour: Ash
  • Designed for speed and tight turns, with added tail release.
  • Upright template allows for tighter, more acute directional changes.
  • Smaller centre fin for increased pivot and tail release.
  • Ideal for surfers who like to perform fast, progressive turns.

Fin Size: Medium (65-80kg)


Side Fins:
Base: 4.3​3" / 110mm
Depth: 4.5​3" / 11​5mm
Area: 1​5.23"² / 9​824mm²
Sweep: 32º
Foil: Flat

​Centre Fin:
Base: 4.​28" / 1​08mm
Depth: 4.​41" / 11​2mm
Area: 14.22"² / 9172mm²
Sweep: 31º
Foil: Flat

Ideal Conditions
Suitable for hollow waves, particularly good in beach break conditions.

Board Types

Recommended for performance shortboards with moderate-to-low rocker.

Please Note: this fin is designed to be used exclusively with the FCS II Fin System, and will not fit in the traditional FCS Dual Plug System.

UK Delivery for this product =
£3.95 for Royal Mail 48hr service.
£6.49 for Express Courier.

Generally all goods ordered before 1pm are sent out on the same day (Mon-Fri).

We offer a fast and efficient worldwide delivery service.

For International deliveries, the shipping will be calculated at checkout, together with any duties and tax. This ensures you have no unexpected charges when receiving your goods.. We guarantee you will have nothing extra to pay.

Check here for our full delivery information

Not happy with your product?

No problem at all!

You can return the product up to 30 days after purchase for a no quibble replacement or refund.
Simply fill out the returns form enclosed with your package and send back to us.
info@downthelinesurf.co.uk or ring one of the team on (01736) 757025

Please find our full Returns & Refund Policy here, and our Shipping Policy here. Customer Services can be contacted here.

If you have any questions about the FCS II Reactor Neo Glass Eco Tri Fin Set - Ash - Medium, submit the product question form below and we'll get back to you as soon as possible. Or give us a call on (01736) 757025.