The Shaper Series Christenson Tri-Quad set delivers a solid and dependable feel that can be pushed hard in critical conditions.
Availability: 3 In Stock and ready for delivery

Featuring a solid Fibreglass construction the Christenson tri-quad has been designed to complement Christenson's range of performance and hybrid board models.

This 5 fin set combines the Accelerator thruster template with a set of Performer quad trailer fins.  The Accelerator template is a versatile, all-round fin that delivers a balance of speed, flow & response with added control through turns courtesy of a fuller tip profile. Paired with the Performer quad trailer, the quad set will deliver a very solid and dependable feel that surfers can push hard without fear of losing control.

Performance Glass

Performance Glass (PG) fins are machine cut from layers of solid fiberglass. These fins are stiff, and are widely used by pro level surfers because the integrity of the flex is maintained under immense force, and in the most extreme of conditions and situations.

LARGE (75Kg - 90Kg / 165 - 200 Lbs)


Base (inches)

Base (mm)

Depth (inches)

Depth (mm)

Area (inches)

Area  (mm)

Sweep Deg°


MED Tri  4.39 111.5 4.58 116.3 15.28 9860 33.7° Flat
MED Q-Rear  3.83 97.2 3.99 101.3 11.08
7150 32.4° 80/20
LRG Tri 4.50 114.3 4.7 119.2 16.06 10360 33.7° Flat
LRG Q-Rear 4.09 103.7 4.26 108.1 12.63 8150 32.4° 80/20

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 Christenson Performance Glass Tri-Quad Fin Set - Large - Black, 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.