Essentials RDM C50 Constant Curve 400
Bend Curve. Select your flex pattern.
Diameter. Pick your mast diameter.
Length. Choose your mast length.
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.
Mast Bag
Extension optional
Baseplate optional
Your Configuration
Level Up Your Ride - For Progressive Riders
Our Essentials RDM C50 masts are engineered for riders who understand that solid gear builds solid skills. Combining a carefully balanced mix of carbon and fiberglass with our proven epoxy construction, these masts deliver the consistent performance you need to take your riding to the next level.
DESIGNED FOR:
- Progressive intermediate riders
- Weekend warriors
- Value-conscious enthusiasts
- Riders building their first premium quiver
- Those upgrading from entry-level gear
We've engineered these masts for riders like you - passionate about the sport, serious about progression, and smart about gear choices. Every session builds your skills, and the C50 is built to keep up with that journey.
Available from 340 to 460 cm in both RDM and SDM
Our Essentials mast is range available in our constant curve, constant FL and Constant HF curves
Simple. Dependable. Ready to Progress.
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
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.