Chinook Windsurfing Carbon Mast Extension SDM US Cup
£119.95 – £129.95Price range: £119.95 through £129.95
Improved lay-up and manufacturing process! Our lightest extensions come with a Six Pin adjusting collar and are stronger than ever with reinforced sidewalls. All come with the proven US Power-Haul pulley and cleat system and 2 cm adjustment increments.
- Unconditional 12 Month Warranty
- Ultra Lightweight.
- Redesigned with stronger than ever reinforced side walls.
- Large brass rollers significantly reduce friction and give easy downhauling.
- Fully adjustable, easy to use slim line snap-on collar.
- Two small moulded ramps on bottom of extension which automatically press in the US Cup push pins when connecting to base.
- Highly visible and durable height adjustment markings.
- High grip clam cleat and quality downhaul rope.
- Room to store excess downhaul rope up extension.
| Brand | Chinook |
|---|---|
| Size | 28cm, 48cm |
| Construction | Carbon |
| Type | SDM |
CLICK AND COLLECT:
- If you are located in the UK at the checkout you will be able to select to collect from our Store in Gosport.
COURIERS WE USE:
- Royal Mail for small and medium parcels
- Parcel Force for medium items like kites, harnesses and iSUPs
- UPS, DHL & Parcel Force for larger items like booms masts and boardLarge items such as boards, booms and masts will be delivered in 3-5 days as bigger vehicles are required by the couriers and can induce delays.
DISPATCH: All items are dispatched from our Gosport Store and will experience a 24hr delay where we are closed on Tuesdays. Any orders taken after 1pm on Friday and over the weekend will be dispatched on Monday.
EU and Worldwide Postage: EU and Worldwide items are priced without VAT. Our webstore is not setup for orders outside the UK but if you would like to purchase from us please email us with your details and we will reply with a postage quote. Payment is required by Bank Transfer.
RETURNS: Use the address below for returns. If a refund is required we will refund only the value of the item(s) and not the postage. Returns must be made within 14 days unless the item is deemed faulty. Please include the original shipping label as this will have the order reference and you name on it.
RETURNS ADDRESS:
Andy Biggs Watersports
103 Bury Road
GOSPORT
PO12 3PR
DAMAGED ITEM: If an item is damaged in transit you must notify the us immediately upon delivery and let us know as soon as you can.
Related products
Duotone Power.XT 2.0 Alloy Windsurfing Extension
In stock
-
An inspiring (r)evolution – the POWER.XT 2.0 can do much more and do it better than the previous model. And as POWER.XT 2.0 SLS RDM 36 it is also the most lightweight ratchet extension of all time! Beyond the basic idea, the POWER.XT 2.0 has almost nothing in common with the previous model any more. From the extremely solid ratchet mechanism plus lever to the simplified release mechanism, the high-strength Lyros® Dyneema harness downhaul lines and the option to retrofit the damper function – everything has been radically upgraded. The latest version comes with a completely new adjustment ring, which offers a unique feature: based on the tried-and-tested SDM adjustment ring, the RDM version now for the first time ensures that the aluminum tube does not come into contact with the mast anymore, which avoids any contact corrosion. No other RDM extension can offer that! In order to guarantee the same durability despite the reduced diameter, a double-walled sandwich construction of 7075 aluminum outer tube and ovalized T8 inner tube is used (patent pending). For many years, the POWER.XT has been the benchmark when it comes to extensions with trimming tools. Those who use it will never want to do without it again. Thanks to the integrated lever, it overcomes even the strongest downhaul forces, enabling perfect re-trimming or fine-tuning even when on the water. Even children could handle the extreme luff tension of modern slalom sails, each profile can be adjusted to millimetre precision in a matter of seconds. The 15 cm long lever and the ratio of 1:60 enable trimming without any noticeable effort.
Severne Triple Xtension HD RDM
In stock
TRIPLE XTENSION
Chinook Windsurfing Mast Extension SDM US Cup
In stock
- Unconditional 12 month warranty
- Adds maximum of 12cm to mast length
- Standard Diameter
- US Basecup
- Large brass pulleys for increased leverage
Chinook Windsurfing Mast Extension RDM US Cup
In stock
- Unconditional 12 month warranty
- Large brass rollers significantly reduce friction and give easy down hauling.
- New easy to use Composite Snap Collar, eliminates lost pins and collars and can be quickly adjusted with one hand
- Large finger friendly metal release button - with a good positive action.
- Finished in a stunning blue anodized outer coating.
- Highly visible and durable height adjustment markings.
- High grip clam cleat and quality downhaul rope.
Chinook Windsurfing Carbon Mast Extension SDM Euro Pin
In stock
- Unconditional 12 month warranty
- Ultra Lightweight.
- Redesigned with stronger than ever reinforced side walls.
- Large brass rollers significantly reduce friction and give easy downhauling.
- Fully adjustable, easy to use slim line snap-on collar.
- Large finger friendly metal release button - with a good positive action.
- Highly visible and durable height adjustment markings.
- High grip clam cleat and quality downhaul rope.
Chinook Windsurfing Carbon Mast Extension RDM Euro Pin
In stock
- Ultra light weight
- Elegant and very strong
- New easy to use Composite Snap Collar eliminates lost pins and can be quickly adjusted with one hand
- Large brass rollers significantly reduce friction and give easy down hauling
- Fully adjustable, easy to use collar, with pin & line
- Large finger friendly metal release button - with a good positive action
- Highly visible and durable height adjustment markings
- High grip clam cleat and quality downhaul rope
- Stylish gloss finish
Radz Windsurfing Mast Extension SDM
In stock
Chinook Windsurfing Inflight Outhaul Kit
Only 3 left in stock
- Everything you need to adapt a Chinook or any other boom into a low friction, 8 to 1, on-the-fly out-haul system
- Includes 2 cleats, double sail pulley, 4mm pre-stretched line (1-12’,2-5’ lengths), two Ronstan pulley blocks, and 2 T-handles
- Compatible with modern race booms that have three integrated outhaul pulleys
- Modern high performance sails often benefit from adjustable outhaul;
- Different wind angles (broader = looser)
- Wind strengths (stronger = tighter)
- You'll be amazed at the difference it makes!
- All serious racers use in-flight adjustable outhauls
- Fantastic for ALL performance blasters
Ding Epoxy Board Repair Stick from Chinook
Only 2 left in stock
Chinook Adjustable Race Windsurfing Harness Lines (PAIR)
In stock

Reviews
There are no reviews yet.