---
product_id: 761773740
title: "Ninja Warrior Obstacle Course Accessory - Upgraded Buckle for 2\" Wide Slacklines - No Tear Slackline, Quick Buckle - No Threading, Installs in Seconds - Anywhere on the Line"
brand: "gentle booms sports"
price: "S$183"
currency: SGD
in_stock: true
reviews_count: 5
url: https://www.desertcart.sg/products/761773740-ninja-warrior-obstacle-course-accessory-upgraded-buckle-for-2-wide
store_origin: SG
region: Singapore
---

# 1000 lbs high-carbon steel strength Seamless one-piece tech Rustproof & weather resistant Ninja Warrior Obstacle Course Accessory - Upgraded Buckle for 2" Wide Slacklines - No Tear Slackline, Quick Buckle - No Threading, Installs in Seconds - Anywhere on the Line

**Brand:** gentle booms sports
**Price:** S$183
**Availability:** ✅ In Stock

## Summary

> 🧗‍♂️ Upgrade your grip, conquer every challenge!

## Quick Answers

- **What is this?** Ninja Warrior Obstacle Course Accessory - Upgraded Buckle for 2" Wide Slacklines - No Tear Slackline, Quick Buckle - No Threading, Installs in Seconds - Anywhere on the Line by gentle booms sports
- **How much does it cost?** S$183 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/761773740-ninja-warrior-obstacle-course-accessory-upgraded-buckle-for-2-wide)

## Best For

- gentle booms sports enthusiasts

## Why This Product

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

## Key Features

- • **Smooth Operator:** No sharp edges means zero slackline wear and tear, extending your gear’s lifespan.
- • **Seamless Strength:** One-piece integrated design eliminates weak points, ensuring no deformation under pressure.
- • **Power-Packed Carabiner:** High-carbon steel carabiner withstands up to 1000 lbs, giving you unmatched security on every obstacle.
- • **Quick-Click Installation:** Ergonomic curved design lets you set up faster than ever—get in the game without the wait.
- • **Built to Brave the Elements:** Rustproof, waterproof, and weather-resistant coating keeps your buckle ready for any outdoor challenge.

## Overview

The Ninja Warrior Obstacle Course Accessory Upgrade Buckle is a premium, tear-resistant buckle designed for 2" wide slacklines. Featuring a rustproof, waterproof coating and seamless one-piece construction, it offers superior durability and safety. Its ergonomic curved design ensures quick installation, while the smooth surface prevents slackline wear. Equipped with a high-carbon steel carabiner rated for 1000 lbs, this buckle is built to withstand intense outdoor use and elevate your obstacle course experience.

## Description

Ninja Warrior Obstacle Course Accessory Upgraded Buckle for 2" Wide Slacklines Tear Resistant Slackline

## Features

- DURABLE AND SAFE: Coated design is rustproof, waterproof and weather resistant
- ONE PIECE TECHNOLOGY: Integrated seamless connection technology, not easy to deformation
- EASY TO INSTALL: The curved design makes this buckle easier and faster than other buckles
- Smooth Surface: No sharp edges, completely avoid the wear of sagging line
- STRONG CARABINER: Made of high carbon steel, it can withstand pulling up to 1000 lbs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Amazon Bestseller | #584,663 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #74 in Slacklines |
| Asin | B0CJBF43XV |
| Brand Name | Gentle Booms Sports |
| Color | blue |
| Compatible With Vehicle Type | Passenger Car, Truck, Van |
| Customer Reviews | 4.5 4.5 out of 5 stars (73) 4.5 out of 5 stars |
| Fastener Type | Buckle |
| Hardware Material | Stainless Steel |
| Included Components | Buckle |
| Item Type Name | Ninja Slackline Buckle |
| Manufacturer | Gentle Booms Sports |
| Manufacturer Part Number | GBS-PJ-0021 |
| Material Type | Carbon Steel |
| Model Number | GBS-PJ-0021 |
| Number Of Packs | 1 |
| Number Of Pieces | 1 |
| Size | PJ02 |
| Unit Count | 1.0 Count |

## Product Details

- **Size:** PJ02
- **Material:** Stainless Steel
- **Color:** blue
- **Brand:** Gentle Booms Sports
- **Vehicle Service Type:** Passenger Car, Truck, Van

## Images

![Ninja Warrior Obstacle Course Accessory - Upgraded Buckle for 2" Wide Slacklines - No Tear Slackline, Quick Buckle - No Threading, Installs in Seconds - Anywhere on the Line - Image 1](https://m.media-amazon.com/images/I/71z5BDqmTxL.jpg)
![Ninja Warrior Obstacle Course Accessory - Upgraded Buckle for 2" Wide Slacklines - No Tear Slackline, Quick Buckle - No Threading, Installs in Seconds - Anywhere on the Line - Image 2](https://m.media-amazon.com/images/I/71NmgaePGeL.jpg)
![Ninja Warrior Obstacle Course Accessory - Upgraded Buckle for 2" Wide Slacklines - No Tear Slackline, Quick Buckle - No Threading, Installs in Seconds - Anywhere on the Line - Image 3](https://m.media-amazon.com/images/I/61BHxpxRBaL.jpg)
![Ninja Warrior Obstacle Course Accessory - Upgraded Buckle for 2" Wide Slacklines - No Tear Slackline, Quick Buckle - No Threading, Installs in Seconds - Anywhere on the Line - Image 4](https://m.media-amazon.com/images/I/71V5h6VxizL.jpg)
![Ninja Warrior Obstacle Course Accessory - Upgraded Buckle for 2" Wide Slacklines - No Tear Slackline, Quick Buckle - No Threading, Installs in Seconds - Anywhere on the Line - Image 5](https://m.media-amazon.com/images/I/718-XxuDlBL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ Good product
*by  on Reviewed in Canada October 8, 2026*

The clips work well but take a little bit to figure out the best way to install them. They can't be installed while there is tension in the line.

### ⭐⭐⭐⭐⭐ The line must be slack to put these on. They cannot be added after it's tight
*by  on Reviewed in the United States July 14, 2026*

I really do love these little hooks. They were very simple and did slide easier than the ones that came with my original set. What I will mention is that you cannot put them on if the line is tight. You must loosen up your ratchet line so that it has some flexibility to it before you'll be able to put these on. So keep that in mind when you're adding them. I'd recommend putting a ton of extra ones on when you first build it so that you can add additional accessories without having to constantly take the strap down. Overall, the quality of these are very nice powder coated and stainless seem to be holding up pretty well. They're extremely durable for a long time. Use outside. And they did fit very securely onto our existing strap. Overall, this is one of the most fun activities my kids have in the yard and doesn't require much attention from me so they can just go out and enjoy it at their own leisure. I love that these keep the accessories from sliding and the locking mechanism on the hooks keeps items from falling off on expectedly, which makes it much safer than some of the other options.

### ⭐⭐⭐⭐⭐ Durable hardware
*by  on Reviewed in the United States September 18, 2025*

These were the final and most important part of the puzzle, to complete my makeshift swingset. They are quality and easy to add to a slack line. It takes a bit of patience getting them in just the right spot, but they easily slide along the slack line when it’s not tight. My kids absolutely adored their swings. It’s easily becoming some of the best money I’ve spent on a toy!

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**Shop now:** [https://www.desertcart.sg/products/761773740-ninja-warrior-obstacle-course-accessory-upgraded-buckle-for-2-wide](https://www.desertcart.sg/products/761773740-ninja-warrior-obstacle-course-accessory-upgraded-buckle-for-2-wide)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-11-11*