---
product_id: 366580315
title: "9\" US box center Fin Safety Flex Soft replacement for longboard Race SUP Cruise Stand up Paddleboard River Surf Fishing airSUP AIR7 Skeg with Screw"
brand: "sarusurf"
price: "253 zł"
currency: PLN
in_stock: true
reviews_count: 1
url: https://www.desertcart.pl/products/366580315-9-us-box-center-fin-safety-flex-soft-replacement-longboard
store_origin: PL
region: Poland
---

# Universal Fit for SUP & Longboards Tool-Free Adjustable Screw Unbreakable Flex Tech 9" US box center Fin Safety Flex Soft replacement for longboard Race SUP Cruise Stand up Paddleboard River Surf Fishing airSUP AIR7 Skeg with Screw

**Brand:** sarusurf
**Price:** 253 zł
**Availability:** ✅ In Stock

## Summary

> 🛶 Ride Safe, Ride Smart — The Fin That Flexes With You!

## Quick Answers

- **What is this?** 9" US box center Fin Safety Flex Soft replacement for longboard Race SUP Cruise Stand up Paddleboard River Surf Fishing airSUP AIR7 Skeg with Screw by sarusurf
- **How much does it cost?** 253 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/366580315-9-us-box-center-fin-safety-flex-soft-replacement-longboard)

## Best For

- sarusurf enthusiasts

## Why This Product

- Trusted sarusurf brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built for Adventure:** Durable design withstands shore breaks, river runs, and shallow reefs without damage.
- • **Findestructible Flex:** 9-inch safety flex fin bends, never breaks—perfect for fearless rides.
- • **Kid & Beginner Friendly:** Soft edges reduce injury risk, making first waves safer and more fun.
- • **Versatile Compatibility:** Fits most US box longboards, SUPs, and inflatable boards—one fin to rule them all.
- • **Effortless On-the-Go Adjustments:** Stainless steel screw lets you tweak or remove the fin without tools, even on water.

## Overview

The saruSURF 9" Safety Flex Soft Fin is a durable, flexible replacement fin designed for longboards, SUPs, and inflatable paddleboards with US box fin systems. Engineered to be virtually unbreakable and kid-safe, it features a tool-free stainless steel screw for quick adjustments on the water. Backed by a 12-month warranty, this fin excels in diverse conditions—from beginner surf sessions to challenging river runs—offering unmatched safety and versatility.

## Description

Safety Flex Soft 9" center fin - impossible to break , 12 month warranty !  for longboard / (stand up paddle) SUP / airSUP or any brand inflatable SUP or foam board using the AIR7 fin box / river SUP / Race / Cruise / touring ! great for beginner : hire / resort / school great for surfer : shallow reef / dumping shore break / white water SUP light on your wallet and also light weight at only approx 8oz (230g)  NOTE: if you need a fin screw, please choose (some options do not include the screw!), also please choose the color you want

## Features

- SAFETY FLEX SOFT 9" FIN - under most conditions : impossible to break , 12 month warranty , we call the fin "findestructible" ! ( 9 inch = 23cm )
- GREAT FOR BEGINNER AND KIDS : 1st time surfing can be dangerous, usually the fin is the sharpest part of you board, with this fin you can feel safer - the fin will bend and flex more and is harder to hurt yourself and others
- FOR LONGBOARD , SUP AND INFLATABLE SUP ( inflatable sup boards with air7 fin box or US box - contact us to confirm if not sure) suitable for use with most longboard / (stand up paddle) SUP / airSUP. most long board and stand up paddleboards use the universal fin system, which can take this replacement fin.
- STAINLESS STEEL FIN SCREW saruSURF brand US box center fin, fin screw, no need to screw drivers, adjust your in position (forward, backward, take it off) anytime even out on the water!
- GREAT FOR SURFER AND ADVANCED SUP : surf dumping shore breaks, shallow reefs. On your SUP : challenge white water, low level streams, river runs and fly fish in shallow lakes. This fin is flexible , in most conditions will not break, and less likely to break out your board's fin box!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Package Dimensions L x W x H | 11.57 x 10.39 x 1.3 inches |
| Package Weight | 0.24 Kilograms |
| Item Weight | 230 Grams |
| Brand Name | saruSURF |
| Warranty Description | 1 year warranty |
| Model Name | SSFF9SUP |
| Color | Green |
| Material | Plastic |
| Suggested Users | unisex-child |
| Manufacturer | saruSURF |
| Part Number | SS-9FFSUP |
| Included Components | center fin |
| Size | 9 |

## Images

![9" US box center Fin Safety Flex Soft replacement for longboard Race SUP Cruise Stand up Paddleboard River Surf Fishing airSUP AIR7 Skeg with Screw - Image 1](https://m.media-amazon.com/images/I/516zyHOx9WL.jpg)
![9" US box center Fin Safety Flex Soft replacement for longboard Race SUP Cruise Stand up Paddleboard River Surf Fishing airSUP AIR7 Skeg with Screw - Image 2](https://m.media-amazon.com/images/I/61qsmqeNh3L.jpg)
![9" US box center Fin Safety Flex Soft replacement for longboard Race SUP Cruise Stand up Paddleboard River Surf Fishing airSUP AIR7 Skeg with Screw - Image 3](https://m.media-amazon.com/images/I/61mId-7dqvL.jpg)
![9" US box center Fin Safety Flex Soft replacement for longboard Race SUP Cruise Stand up Paddleboard River Surf Fishing airSUP AIR7 Skeg with Screw - Image 4](https://m.media-amazon.com/images/I/61coCZFR2zL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good fin
*by P***L on June 30, 2022*

Perfect fin for the small/shallow days on the longboard. Save your fiberglass fins and your finbox,

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**Shop now:** [https://www.desertcart.pl/products/366580315-9-us-box-center-fin-safety-flex-soft-replacement-longboard](https://www.desertcart.pl/products/366580315-9-us-box-center-fin-safety-flex-soft-replacement-longboard)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-22*