Thruster Fin Size Chart (Quick Guide)
This Thruster Fin Size Guide is a quick reference for choosing the right fin size based on surfer weight.
New to surfboard fins? Start with the complete Surfboard Fin Guides overview.
If you want a deeper explanation of how fin size affects performance, read the full
Thruster Fin Size Guide — How to Choose the Right Size for Maximum Performance
Most surfers ride thruster fins between 4.4" and 5.0", with the correct size depending primarily on surfer weight.
Use the chart below to find your ideal size.
Thruster Fin Size Chart (By Surfer Weight)
If you weigh under 55kg, you’ll generally suit an Extra Small (XS) thruster set. These fins are usually around 4.3 inches tall.
If you’re between 55–65kg, go with a Small (S) set. These are typically about 4.4 to 4.5 inches tall. Example: 4.5" Progressive Thruster Surfboard Fins – Gold Pro Glass | Fast Responsive Eveley Fins (FCS II Compatible)
If you weigh 65–75kg, a Medium (M) thruster is the standard choice. Expect fins around 4.6 to 4.7 inches tall.
If you’re 75–90kg, you’ll usually need a Large (L) set. These are generally 4.75 to 5.0 inches tall.
If you’re over 90kg, look at Extra Large (XL) thrusters, which are typically 5.0 inches or bigger.
In short, your body weight determines the fin size first. The inch measurement refers to the height of the side fins, which directly affects hold and control.
This applies whether you're using:
FCS style dual tab
Futures single tab
Glass-on thrusters
How Thruster Fin Size Affects Performance
Smaller thruster fins provide:
Faster release
Less drag
Quicker turns
Larger thruster fins provide:
More hold
Stronger drive
Greater control
Correct fin size gives the best balance between speed and control.
Recommended Thruster Fin Sizes
These Eveley Pro Glass thruster sets match the size ranges in the chart above.
Small to Medium Riders
• 4.5" Thruster Fins – Pro Glass
Balanced control and predictable turning.
Medium Riders
• 4.75" Performance Thruster Fins – Pro Glass
A dependable all-round thruster size offering drive and clean projection.
Large Riders
• 5.4" Big Boy Thruster Fins – Pro Glass
Extra hold and control for larger surfers.
For an overview of thruster fins see the Thruster Fins Explainedguide.
Eveley Thruster Fins
Futures™ is a registered trademark of Futures Fins. Eveley Surf is not affiliated with or endorsed by Futures Fins. All compatibility references to Futures Fins are for descriptive purposes only.