Streamlined Red Line Alloy RDM Windsurf Mast Extension (30)

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Streamlined Red Line Alloy RDM Windsurf Mast Extension (30)

What Streamlined say...

The Streamlined Red Line aluminium extensions are constructed from custom 32 millimetre, 6061 T-8 “drawn” aluminium tubing. The kind of tubing they use to make an aircraft.

This extension is the first and the only “no compromise” Reduced diameter design.  It is all skinny to be consistent with your skinny mast.  This is pure performance and is a “must have design” if performance is your top priority.

Key Features -

POWER 6 - 

This unique design puts six to one purchase power at your finger tips.  it is quick and easy to set up and the lines don’t cross because the large diameter pulleys are in the right direction, as if your sail was made for it.  it really comes together with a Dyneema “super down-haul” line. The power 6 gives you a truly simple yet powerful rigging advantage.


our “quick 6” design is built strong, like no other down-haul cleat system.  the A356 T-6 sand cast aluminium is precision machined and anodised.  it is then out fitted with stainless steel hardware and smooth running hard nylon pulleys.  It is all about performance and reliability.


This security latch has two functions. First , it assures the Euro-Pin is completely engaged on the catch inside. Secondly, the security latch eliminates the release button from being occasionally pushed. All STREAMLINED Euro-Pin style extensions have this invaluable feature


Our Red-line RDM extensions are specially made with 32.5 millimetre diameter 6061 T-8 aluminium tubing. This kind of alloy is used to make aircraft to be lightweight and strong. We precision punch the holes and anodise the tubes inside and out. Finally we laser etch the height setting graphics so they are permanent. Streamlined  equals quality.

Mast Ext Type - Euro (North) Pin



Wet n Dry Boardsports wants you to enjoy your purchases as soon as possible, so we strive to dispatch your order on the same day if ordered before 1pm. (subject to payment authorization and stock availability). If there is going to be a delay for any reason we’ll let you know.

Standard delivery is currently free to the UK*

* Excludes Northern Ireland, highlands and islands, please call or mail for a quote for delivery to these destinations.

For European or Worldwide shipping please contact us for a shipping quote.

If for any reason you are unhappy with your purchase, you can return it to us in its original condition (with packaging and tags intact) within 14 days of the purchase date. We will either issue a full refund for the item or send a different size if you would like an exchange. Just let us know what size you would like.

In all return correspondence, please indicate your order number and name.

Please note that if goods are not returned in the condition in which you received them, we reserve the right to refuse such returns.