---
product_id: 441344753
title: "3 inch US Box Center River & surf SUP fin Safety Flex Soft 3' for SUP Longboard Paddleboard airSUP"
brand: "sarusurf"
price: "KD 170.20"
currency: KWD
in_stock: true
reviews_count: 5
category: "Saru Surf"
url: https://www.desertcart.com.kw/products/441344753-3-inch-us-box-center-river-and-surf-sup-fin
store_origin: KW
region: Kuwait
---

# 8" fin base - precise US box fit Stainless steel fin screw - tool-free adjustability 3" Safety Flex Soft TPU fin - unbreakable 3 inch US Box Center River & surf SUP fin Safety Flex Soft 3' for SUP Longboard Paddleboard airSUP

**Brand:** sarusurf
**Price:** KD 170.20
**Availability:** ✅ In Stock

## Summary

> 🌊 Flex, fit, and flow—ride every wave with findestructible confidence!

## Quick Answers

- **What is this?** 3 inch US Box Center River & surf SUP fin Safety Flex Soft 3' for SUP Longboard Paddleboard airSUP by sarusurf
- **How much does it cost?** KD 170.20 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/441344753-3-inch-us-box-center-river-and-surf-sup-fin)

## 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

- • **Perfect US Box Fit:** 8" fin base designed for universal US box compatibility—measure before you buy!
- • **Unbreakable Flex Tech:** Safety Flex TPU material bends, never breaks—surf worry-free.
- • **Beginner & Pro Friendly:** Soft, flexible fin reduces injury risk for newbies and withstands rocky river runs for experts.
- • **Tool-Free Fin Adjustment:** Adjust or remove your fin on the water with included stainless steel screw—no tools needed.
- • **All-Around SUP Versatility:** Ideal for longboards, inflatable SUPs, river runs, and shallow reef surfing—one fin to rule them all.

## Overview

The 3" US Box Center River & Surf SUP Fin by saruSURF is a durable, flexible TPU fin designed for longboards and inflatable SUPs with an 8" fin box. Featuring a stainless steel screw for easy, tool-free adjustments on the water, this fin offers unmatched break-resistance and safety, making it perfect for beginners and advanced paddlers tackling rivers, reefs, and shore breaks. Backed by a 12-month warranty, it’s engineered to keep your board stable and injury-free in diverse conditions.

## Description

8" long fin base if your fin box cavity is not 8" this fin will not fit PLEASE measure your fin box BEFORE you buy Safety Flex Soft 3" center fin - impossible to break , 12 month warranty ! for longboard / (stand up paddle) SUP / airSUP / river SUP / Race / Cruise / touring , any inflatable SUP with AIR7 fin box or surfboard with regular US box including foam surfboards!! great for beginner : hire / resort / school great for surfer : shallow reef / dumping shore break / white water SUP

Review: Perfect for rivers in keeping the board on course when a normal skeg would get banged on rocks in shallow sections.
Review: Long shipment but worth it. Indeed it is a long box fit and comes with screw. I used it for a Kahuna 10'10 ISUP. Hit a few rocks and its flex but also holds up. Would be nice to get it in a 2inch.

## Features

- SAFETY FLEX SOFT 3" FIN - under most conditions : impossible to break , 12 month warranty , we call the fin "findestructible" ! 8" long fin base if your fin box cavity is not 8" this fin will not fit PLEASE measure your fin box BEFORE you buy
- STAINLESS STEEL FIN SCREW saruSURF brand US box center fin, fin screw included, no need to screw drivers, adjust your in position (forward, backward, take it off) anytime even out on the water! 8" long fin base if your fin box cavity is not 8" this fin will not fit PLEASE measure your fin box BEFORE you buy
- 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. 8" long fin base if your fin box cavity is not 8" this fin will not fit PLEASE measure your fin box BEFORE you buy
- 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 8" long fin base if your fin box cavity is not 8" this fin will not fit PLEASE measure your fin box BEFORE you buy
- 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! 8" long fin base if your fin box cavity is not 8" this fin will not fit PLEASE measure your fin box BEFORE you buy

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00M83Q8UI |
| Age range (description) | Adult |
| Batteries Included? | No |
| Color | Black |
| Customer Reviews | 3.9 3.9 out of 5 stars (48) |
| Date First Available | 9 September 2014 |
| Department | unisex-adult |
| Included Components | surfboard fin |
| Is Discontinued By Manufacturer | No |
| Item model number | SS-SF3-black |
| Length | 3 inches |
| Manufacturer | saruSURF |
| Material Type | TPU plastic |
| Product Dimensions | 2.8 x 1.5 x 11 cm; 130 g |
| Size | 3" |
| Skill level | Beginner |
| Style | Fin Screw Included (Black) |
| Team | us box |
| UPC | 852661522014 |
| Width | 8.8 millimeters |

## Product Details

- **Brand:** saruSURF
- **Colour:** Black
- **Item weight:** 130 Grams
- **Material:** TPU plastic
- **Sport:** SUP Paddling

## Images

![3 inch US Box Center River & surf SUP fin Safety Flex Soft 3' for SUP Longboard Paddleboard airSUP - Image 1](https://m.media-amazon.com/images/I/71znBB50x3L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***Y on 15 June 2015*

Perfect for rivers in keeping the board on course when a normal skeg would get banged on rocks in shallow sections.

### ⭐⭐⭐⭐ Review
*by L***. on 3 August 2022*

Long shipment but worth it. Indeed it is a long box fit and comes with screw. I used it for a Kahuna 10'10 ISUP. Hit a few rocks and its flex but also holds up. Would be nice to get it in a 2inch.

### ⭐ Review
*by A***R on 28 August 2023*

ビスがノーズ側にあることによりビスの破損によってフィンの先端が岩に引っかかります。ストッパーがテール側についており、脱落しにくいことがかえって危険です。サップインストラクターたちの間では有名なフィンで、すぐにやめたほうがよいとアドバイスされます。クオリティはたかいのでぜひビスをテール側にしたバージョンアップ版を作成してほしいです。

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-01-25*