---
product_id: 147511116
title: "Beast K9 10x17 Performance Rectangle Trampoline with Enclosure | Heavy Duty | No Weight Limit | 9.5 Inch Black PianoWire Springs | Free Ladder"
brand: "beast trampoline"
price: "¥747727"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/147511116-beast-k9-10x17-performance-rectangle-trampoline-with-enclosure-heavy-duty
store_origin: JP
region: Japan
---

# 9.5 Inch Black PianoWire Springs for Ultimate Bounce Heavy Duty Galvanized Steel Frame No Weight Limit & ASTM/CE Safety Certified Beast K9 10x17 Performance Rectangle Trampoline with Enclosure | Heavy Duty | No Weight Limit | 9.5 Inch Black PianoWire Springs | Free Ladder

**Brand:** beast trampoline
**Price:** ¥747727
**Availability:** ✅ In Stock

## Summary

> 🚀 Bounce Beyond Limits with Beast K9 – Where Performance Meets Power!

## Quick Answers

- **What is this?** Beast K9 10x17 Performance Rectangle Trampoline with Enclosure | Heavy Duty | No Weight Limit | 9.5 Inch Black PianoWire Springs | Free Ladder by beast trampoline
- **How much does it cost?** ¥747727 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/147511116-beast-k9-10x17-performance-rectangle-trampoline-with-enclosure-heavy-duty)

## Best For

- beast trampoline enthusiasts

## Why This Product

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

## Key Features

- • **No Limits, Just Fun:** Designed with no single user weight limit, this trampoline supports the whole family’s high-energy play without worry.
- • **Unmatched Bounce Power:** 124 premium 9.5-inch black piano wire springs deliver a vigorous yet soft jump experience that outperforms the competition.
- • **Bonus Ladder & Easy Setup:** Free sturdy ladder and spring puller tool included, plus clear graphical instructions make assembly a breeze—jump in faster!
- • **Built to Last, Built for Safety:** Heavy-duty galvanized steel frame with 2.4-inch diameter tubes and UV-treated safety pads ensure durability and year-round use without compromise.
- • **Complete Safety Enclosure Included:** High enclosure height of 132 inches keeps jumpers secure, meeting and exceeding ASTM and CE safety standards for peace of mind.

## Overview

The Beast K9 10x17 Performance Rectangle Trampoline is a heavy-duty, professional-grade outdoor trampoline featuring a galvanized steel frame, 124 black piano wire springs for superior bounce, and a high safety enclosure. Designed with no weight limit and UV-treated components, it guarantees durability and safety for all ages. Includes a free ladder and spring tool, backed by a comprehensive warranty, making it the ultimate choice for active families seeking premium quality and performance.

## Description

Quick note: "Our company suffered from Covid and our small customer service staff was overwhelmed and not able to keep up. Now the Beast business is on track again and we are promising great customer service. The K9 Rectangle is a beefy and bouncy tramp. It is our duty to serve the customer with great satisfaction." | The Beast K9 Rectangle is a high performance trampoline designed for all ages. This beefy and bouncy rectangle will keep your children active and smiling all day long. Plus it's built solid for the parents too. High Quality jumping is what you receive along with all the safety features. The Beast K9 Rectangle Trampoline provides big air due to the re-enforced frame and optimized spring & mat dynamics! The heavy duty frame structure is designed for maximum safety! The Beast K9 involves a synergy design ensuring that each spring is optimized to give out its full punch. Where many other designs limit the performance of the springs, the K9 mat and springs provide a vigorous, yet precise and soft bounce. Witness a bounce that you’ve never come across on an outdoor trampoline! A FREE Trampoline ladder is now included in the package! This K9 Package includes: Beast K9 10x17 Trampoline Beast K9 Enclosure Beast K9 Ladder Includes graphical instructions and spring puller tool. All replacement parts are kept in stock. Exceeds ASTM and CE standards: SPECIFICATIONS FRAME Heavy Duty -frame * Galvanized steel inside and out * Frame tube diameter 2.4 in * Tube thickness .10 in MAT Cross-sewn polypropylene * 10 row stitching * UV-treated MAX LOAD No Single User Weight Limit OTHER INFO Designed For year-round use | No need to take it down in the winter Safety Pad Thickness 1.4 in * Thick vinyl cover * Width 15.5 in * UV-treated PRODUCT WEIGHT 550 lb (trampoline, enclosure, ladder) SIZE 10x17 Ft Frame height 42 in Height with enclosure 132 in SPRINGS * Black PianoWire * 124 pcs * Length 9.5 in * Spring Pull Tool Included WARRANTY 10 years for the frame 3 years for the springs 2 years for the jumping mat 2 years for other mat components 2 years for the safety pad 1 year for the ladder and enclosure

## Features

- Performance Bounce with PianoWire Springs
- Heavy Duty Design
- Safest Big Rectangle
- Hightest Standards in Craftmanship
- Guaranteed with Great Warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Black |
| Brand | Beast Trampoline |
| Material | Polypropylene (PP) |
| Frame Size | 10 x 17 |
| Pad Type | Safety Pad |
| Shape | Rectangular |
| Frame Material | Alloy Steel |
| Item Weight | 550 Pounds |
| Maximum Weight Recommendation | 550 Pounds |
| Number Of Springs | 140 |
| Manufacturer | Beast Inc. |
| UPC | 653829953660 |
| Model Name | K9 Rectangle |
| Item Dimensions  LxWxH | 204 x 120 x 120 inches |
| Brand Name | Beast Trampoline |
| Warranty Description | 5 year limited manufacturer warranty |
| Included Components | Enclosure, Ladder |
| Sport Type | gtramp |

## Product Details

- **Color:** Black
- **Brand:** Beast Trampoline
- **Material:** Polypropylene (PP)
- **Frame Size:** 10 x 17
- **Pad Type:** Safety Pad
- **Shape:** Rectangular
- **Frame Material:** Alloy Steel
- **Item Weight:** 550 Pounds
- **Maximum Weight Recommendation:** 550 Pounds
- **Number Of Springs:** 140

## Images

![Beast K9 10x17 Performance Rectangle Trampoline with Enclosure | Heavy Duty | No Weight Limit | 9.5 Inch Black PianoWire Springs | Free Ladder - Image 1](https://m.media-amazon.com/images/I/71GifWl-REL.jpg)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/147511116-beast-k9-10x17-performance-rectangle-trampoline-with-enclosure-heavy-duty](https://www.desertcart.jp/products/147511116-beast-k9-10x17-performance-rectangle-trampoline-with-enclosure-heavy-duty)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-27*