HD RDM C75 Constant FH Curve 430 Incl. Mast Bag
Bend Curve. Select your flex pattern.
Diameter. Pick your mast diameter.
Length. Choose your mast length.
EU order prices are shown Taxes and Duties included. Shipping calculated at checkout.
30-day returns
Return Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
Return Fees:
- A 5% restocking fee applies to all returns
- Original shipping costs are non-refundable
- Return shipping costs are the customer's responsibility
To be eligible for a return, your item must be in the same condition as when you received it: unworn or unused, with tags, and in its original packaging. You'll also need the receipt or proof of purchase.
To start a return, contact us at support@unifiber.net.
Returns should be sent to:
UnifiberPhantom 14
5126 RJ Gilze
Netherlands
If your return is accepted, we'll send you instructions on how and where to send your package.
Important: Items sent back without first requesting a return will not be accepted.
Important for International Returns
If you are located outside the European Union, please be aware that:
- Return shipping costs to the Netherlands can be significant (often similar to original shipping rates)
- Any customs duties, taxes, or import fees incurred during the return process are your responsibility
We ship from the Netherlands. International customers should factor in potential return costs when ordering, as these can be substantial for destinations such as Australia, North America, Asia, and the Middle East.
When We Cover Return Shipping
Unifiber will cover return shipping costs and waive the restocking fee only in the following cases:
- You received a defective or damaged item
- You received the wrong item (different from what you ordered)
- The product does not match the description on our website
In these cases, contact us at support@unifiber.net with photos and a description of the issue. We will arrange and cover the return shipping.
Damages and Issues
Please inspect your order upon delivery and contact us immediately if the item is defective, damaged, or if you received the wrong item. We'll evaluate the issue and make it right.
Exceptions / Non-returnable Items
Certain types of items cannot be returned:
- Custom products (special orders or personalized items)
- Sale items or gift cards
Exchanges
The fastest way to get what you want is to return the item you have. Once the return is accepted, you can place a new order for the replacement item.
European Union 14-Day Cooling-Off Period
If your order was shipped within the European Union, you have the right to cancel or return your order within 14 days, for any reason and without justification.
Please note: A 5% restocking fee and return shipping costs apply. Original shipping costs are non-refundable.
To qualify, your item must still be:
- in the same condition you received it
- unworn or unused
- with tags
- in the original packaging
You'll also need the receipt or proof of purchase.
Refunds
We will notify you once we've received and inspected your return and let you know if the refund has been approved.
If approved, you'll be automatically refunded to your original payment method within 10 business days.
- Please note: A 5% restocking fee will be deducted from your refund. Original shipping fees and return shipping costs are non-refundable.
It can take some time for your bank or credit card company to process and post the refund.
If more than 15 business days have passed since we approved your return and you haven't received your refund, please contact us at support@unifiber.net.
Range. Upgrade your performance.
Value
Essentials C50
T700Outstanding durability for recreational sailing.
Popular
HD C75
T700Optimal blend of durability and responsiveness.
Pro
Elite C100
T700 + T800Maximum performance, minimum weight.
Extension optional
Baseplate optional
Your Configuration
The Unifiber HD C75 mast range is where performance meets value. Designed for sailors who want a perfect blend of durability, responsiveness, and affordability, these masts are the ideal choice for wave sailors, amateur racers, and high-wind freeriders looking to step up their game.
Why You’ll Love It:
- Durable & Responsive: Built to handle the demands of aggressive riding, the HD C75 masts deliver a superb balance of strength and responsiveness. Whether you're carving waves or pushing speed in high winds, these masts keep up with your every move.
- Optimized Performance: Available in both RDM (Reduced Diameter Mast) and SDM (Standard Diameter Mast), the HD C75 range offers versatility to match your rig and sailing style.
- Unbeatable Value: The HD C75 range offers the optimum price-to-performance ratio, making it the smart choice for riders who want high-quality gear without breaking the bank.
DESIGNED FOR:
- Wave sailors who need a mast that combines durability with precise control.
- Amateur racers looking for a competitive edge without the premium price tag.
- High-wind freeriders who want a responsive and reliable mast for aggressive riding.
- Riders stepping up their game and seeking a mast that delivers performance and value.
Your Ride, Our Gear:
At Unifiber, we believe everyone deserves access to high-quality gear that helps them progress. The HD C75 mast range is designed for riders who want to step up their game without compromising on performance or value. Whether you're chasing waves, racing, or freeriding, these masts are built to help you ride harder and go further.
Find Your Perfect Match:
Not sure which mast is right for your rig? Use our Mast Selector Tool on the Unifiber website to find the perfect HD C75 mast for your sailing style and conditions. It’s quick, easy, and ensures you get the most out of your gear.
"Step Up Your Game. Without Stepping Over Budget."
Care & Maintenance
- Never leave your mast unprotected
- Always use a mast bag for storage and transport
- Avoid any direct impacts to the mast
- Check for visible damage before each session
- Carbon is extremely vulnerable to impact damage
- Clean components before rigging
- Apply tape between base and top sections
- Never force sections together if you feel resistance
- Rinse with fresh water after sailing
- Release downhaul tension after sailing
- Never store with full downhaul overnight
- Avoid leaving the sail rigged when not in use
- Check for early signs of pre-bend
- Store mast straight when possible
Warranty
At Unifiber, we stand behind everything we make.
- First year: Your product is completely covered.
- Second year: Continued support against manufacturing defects.
- Keep your proof of purchase handy when you need us.
We build gear to last — and we back it up.
- Year 1 — Unconditional: Full coverage, no questions asked. Any issue, we make it right.
- Year 2 — Conditional: Continued coverage against manufacturing defects.
Hold onto your proof of purchase. If you need us, we're here.
For warranty claims on products purchased from a retailer, please contact the store where you bought the product. They will coordinate with us to resolve any issues under warranty. Find a dealer
Estimate shipping
Approximate estimate based on the selected product price and quantity.
The exact shipping rate appears at checkout.
Taxes & import duties
Local duties and taxes are not collected at checkout. They are settled with the carrier or customs on delivery. See our shipping policy.
Rigorous Testing: Proving Performance Under Pressure
Unifiber Masts: Built to Last
Every mast we create is built on decades of windsurfing experience. We carefully select premium materials and reinforce critical stress points, because we know you need gear that performs consistently in all conditions.
Our rigorous testing and precision construction process ensures your mast will be ready whenever the wind calls. And with our comprehensive warranty covering your gear, you can focus on what really matters - those perfect moments on the water.
Windsurfing Masts FAQs
Think of your windsurfing mast as the spine of your rig - it doesn't just hold your sail up, it actively shapes how your gear performs on the water. When you're carving through chop or catching air off waves, your mast is working hard, flexing and responding to every move you make
Choosing the right mast can significantly impact your windsurfing performance and enjoyment.
Understanding Mast Specifications:
Let's break down these tech specs into what really matters - how your mast will feel and perform in the conditions you love to ride. Whether you're just starting out or looking to fine-tune your quiver, we'll help you find the mast that matches your style.
Our FAQ aims to provide you with the necessary information to demystify mast specifications and help you pick the best mast for your needs.
When it comes to windsurfing masts, there are two main types: Standard Diameter Masts (SDM) and Reduced Diameter Masts (RDM). Here's a quick overview of each type and their key features:
Standard Diameter Masts
- Thicker diameter, typically around 48-50mm at the base
- Stiffer compared to RDM
- Ideal for larger sails
- Provides more stability and power transmission
- Compatible with a wide range of sail sizes and brands
Reduced Diameter Masts
- Thinner diameter, usually around 38-40mm at the base
- More flexible and lightweight compared to SDM
- Perfect for smaller sails
Offers improved handling and maneuverability - Enhances the sail's responsiveness and feel
Consider factors such as sail size, wind conditions, and desired performance characteristics when making your decision.
Both types have their strengths and can greatly enhance your windsurfing experience when matched correctly with the right sail.
In testing Unifiber masts can endure stress of up to 180 kg.
Unifiber RDM masts have a 33-mm. internal diameter up to 600 mm. from the base, tapering to 32mm above 600mm
We recommend a minimum of 100 mm. of mast extension to overlap the inside of the mast to prevent stress load damaging the base of the mast.
Unifiber RDM masts stay at a constant 33 mm. internal width up to 600 mm. into the base section. Beyond 600 mm. the internal width tapers to 32 mm.
Unifiber masts give unbeatable value for money, performance, and durability thanks to a consistent pre-preg manufacturing process and a high-quality surface finish.
Unifiber offers 82 different mast choices in carbon content, diameter and 3 different bend curves to match almost any sail in the winfsurfing maket. We are simply the most versatile and inclusive mast brand and a worldwide expert on mast measurements.
IMCS, which stands for "Indexed Mast Check System," is a standardized method for measuring and comparing the stiffness of windsurfing masts, regardless of their length. This system allows sailors to easily compare the relative stiffness of different masts, even if they are not the same size.