£749.00

JS's new flagship small wave performance shortboard: the Sub Xero is a super fast and super responsive groveller designed to squeeze as much performance as possible out of small to average surf.

The Sub Xero is a hybrid design based on the new Xero and the popular summer model, the Psycho Nitro. It combines the high-performance characteristics of the Xero with what makes the Psycho Nitro excel in average conditions. The Sub Xero features the Psycho Nitro’s ultra-fast low to flat rocker profile and fuller outline, however the nose is pulled in a little, and it also features a wider, straighter tail.

How does it handle?

The Sub Xero to holds speed and changes directions with minimal energy, thanks to its finely tuned bottom contours. The generous thickness and flatter deck is complemented by slightly pulled down rails, which help to maintain volume without sacrificing performance.  This makes it easy to initiate turns and react immediately to any section that comes your way.

Availability: 1 In Stock and ready for delivery

Board Dimensions (Current Stock)

Length L Width W Thickness T Volume Vol Fin System Fin Fin Setup Setup Price
5'6" 20" 2 9/16" 30.3 ltr FCS 2 5 Fin £749.00
6'0" 21 1/8" 2 15/16" 40.9 ltr FCS 2 5 Fin £749.00

JS's new flagship small wave performance shortboard: the Sub Xero is a super fast and super responsive groveller designed to squeeze as much performance as possible out of small to average surf.


The Sub Xero is a hybrid design based on the new Xero and the popular summer model, the Psycho Nitro. It combines the high-performance characteristics of the Xero with what makes the Psycho Nitro excel in average conditions. The Sub Xero features the Psycho Nitro’s ultra-fast low to flat rocker profile and fuller outline, however the nose is pulled in a little, and it also features a wider, straighter tail.

How does it handle?

The Sub Xero to holds speed and changes directions with minimal energy, thanks to its finely tuned bottom contours. The generous thickness and flatter deck is complemented by slightly pulled down rails, which help to maintain volume without sacrificing performance. This makes it easy to initiate turns and react immediately to any section that comes your way.

Construction: Hyfi 2.0

Rocker: Flat rocker for speed generation and gliding over flat sections

Rails: Low Rails

Concaves: A slight rolled vee in the nose / single concave under the front foot / double concave in front of the fins with a slight vee out of the tail

Fin Set up: 5 fin (tri/quad)

Recommended Surf: Small, average, fun waves

Hyfi 2.0

Hyfi is JS Industries' unique multilayered EPS construction that feels like nothing else. The best way to visualize Hyfi is as a futuristic, high-tech exoskeleton that allows the board to be lighter and stronger than ever. This lightweight strength is combined with the ideal amount of spring-loaded flex for maximum performance. Hyfi 2.0 takes everything that made the original Hyfi construction great and improves on it in every way, thanks to 5 years of innovation and extensive testing.

UK Delivery for this product = £19.95 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 JS Sub Xero Hyfi 2.0 Surfboard, 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.