---
product_id: 562193188
title: "18x8.50-8 18x9.50-8 Inner Tubes, 2 Pack Heavy Duty Replacement Tire Inner Tubes with Straight Valve Stem for Lawn Mowers, Wheelbarrows, ATVs, Go Karts, Tractors, Snow Blowers, Golf Carts, Trailers"
brand: "sportyouth"
price: "€ 181.69"
currency: EUR
in_stock: true
reviews_count: 9
category: "Sportyouth"
url: https://www.desertcart.hr/products/562193188-18x8-50-8-18x9-50-8-inner-tubes-2-pack
store_origin: HR
region: Croatia
---

# Universal 18x8.5/9.5-8 fit Quick & easy installation Heavy-duty rubber durability 18x8.50-8 18x9.50-8 Inner Tubes, 2 Pack Heavy Duty Replacement Tire Inner Tubes with Straight Valve Stem for Lawn Mowers, Wheelbarrows, ATVs, Go Karts, Tractors, Snow Blowers, Golf Carts, Trailers

**Brand:** sportyouth
**Price:** € 181.69
**Availability:** ✅ In Stock

## Summary

> 🛞 Upgrade your ride with heavy-duty reliability—because your gear deserves the best!

## Quick Answers

- **What is this?** 18x8.50-8 18x9.50-8 Inner Tubes, 2 Pack Heavy Duty Replacement Tire Inner Tubes with Straight Valve Stem for Lawn Mowers, Wheelbarrows, ATVs, Go Karts, Tractors, Snow Blowers, Golf Carts, Trailers by sportyouth
- **How much does it cost?** € 181.69 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/562193188-18x8-50-8-18x9-50-8-inner-tubes-2-pack)

## Best For

- sportyouth enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Crafted from premium heavy-duty rubber for superior air retention and long-lasting performance under pressure.
- • **User-Friendly Design:** Standard TR13 straight valve stem and easy installation mean no hassle, just reliable performance.
- • **Perfect Universal Fit:** Seamlessly replaces 18x8.50-8 and 18x9.50-8 inner tubes for a flawless match every time.
- • **Versatile Compatibility:** Ideal for ATVs, lawn mowers, wheelbarrows, golf carts, and more—one tube to rule them all.
- • **Cost-Effective Maintenance:** Skip the tire replacement—just swap the tube and get back to work in minutes, saving time and money.

## Overview

This 2-pack of 18x8.50-8 and 18x9.50-8 heavy-duty inner tubes offers a universal fit for a wide range of outdoor equipment. Made from premium rubber, they provide excellent air tightness and durability, supporting up to 30 PSI. Designed for easy installation with a standard straight valve stem, these tubes are a cost-effective solution to keep your lawn mowers, ATVs, wheelbarrows, and more rolling smoothly without the need for full tire replacement.

## Description

desertcart.com: 18x8.50-8 18x9.50-8 Inner Tubes, 2 Pack Heavy Duty Replacement Tire Inner Tubes with Straight Valve Stem for Lawn Mowers, Wheelbarrows, ATVs, Go Karts, Tractors, Snow Blowers, Golf Carts, Trailers : Patio, Lawn & Garden

Review: Good tubes - Quality tubes, easy installation, both holding air at 20 PSI on my dolly. See how long they hold up.
Review: craftsman rider perfect fit - bought two sets tired of inflating tubeless every time I cut the grass, heavy duty rubber, use spoon set to install and dish soap. I also used duct tape on the inner circumference of the wheel to give some cushion after cleaning rust with wire wheel

## Features

- Pefect Fit: Replacement Tire Inner tubes for 18x8.50-8" and 18x9.50-8" Tires. This replacement inner tubes universal fit for 18x8.50/9.50-8" tires/wheels (15"-15.5" outside diameter, 8" width). Also called as 18x6.50-8, 18x7.50, 18x8.5-8, 18x9.5-8, etc
- Heavy Duty Inner Tube: Made from premium-quality, heavy-duty rubber and so are better in air tightness and aging resistance. These inner tubes are durable and ideal for home, professional and commercial or industrial use
- Great Compatibility: Fits with 8" rim. This inner tube is compatible with various equipement such as ATVs, quad 4 wheelers, Go Karts, lawn mowers and tractors, hand trucks, wheelbarrows, garden / utility flat carts, golf cart, yard trailers, wagons, generators, snow blowers, perssure washers, tillers, air compressors, wood chippers, dollies, trolleys and more
- Saving Cost: NO NEED TO BUY A NEW WHOLE TIRE. When the old 18x8.5-8 inch or 18x9.5-8 in tire have a flat, just simply replace the 18x8.5/9.5-8" tube and continue to use it normally! They are easy to install. Take probably a few mins to install the tire tubes
- Please Note: Package includes 2pcs inner tube, tube size 18x8.5/9.5-8", standard TR13 straight valve stem. NOT for road/highway use. 30 PSI maximum inflation. Only inflate with manual pump to avoid overfilling

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CH9PD9MR |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #6,264 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #10 in Wheelbarrow Replacement Parts |
| Brand | SPORTYOUTH |
| Construction Type | Rubber construction |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,106) |
| Date First Available | September 5, 2023 |
| Item Diameter | 18 Inches |
| Item Weight | 4.09 pounds |
| Load Capacity | 100 Pounds |
| Manufacturer | SPORTYOUTH |
| Manufacturer Part Number | A-IT |
| Maximum Pressure | 30 Pound per Square Inch |
| Model | A-IT |
| Rim Width | 8 Inches |
| Section Width | 8.5 Inches |
| Size | 18x8.50/9.50-8 |
| Tire Diameter | 18 Inches |
| UPC | 810032071684 |
| Unit Count | 2.0 Count |
| Vehicle Tire ISO Metric Size Description | 18x8.50/9.50-8R |

## Product Details

- **Brand:** SPORTYOUTH
- **Load Capacity:** 100 Pounds
- **Load Index:** 78
- **Maximum Pressure:** 30 Pound per Square Inch
- **Rim Size:** 8 Inches
- **Rim Width:** 8 Inches
- **Section Width:** 8.5 Inches
- **Size:** 18x8.50/9.50-8
- **Tire Aspect Ratio:** 0.78 Millimeters
- **Tread Depth:** 2.5 Millimeters

## Images

![18x8.50-8 18x9.50-8 Inner Tubes, 2 Pack Heavy Duty Replacement Tire Inner Tubes with Straight Valve Stem for Lawn Mowers, Wheelbarrows, ATVs, Go Karts, Tractors, Snow Blowers, Golf Carts, Trailers - Image 1](https://m.media-amazon.com/images/I/61aHOWI+cgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good tubes
*by R***N on December 30, 2025*

Quality tubes, easy installation, both holding air at 20 PSI on my dolly. See how long they hold up.

### ⭐⭐⭐⭐⭐ craftsman rider perfect fit
*by D***A on December 24, 2025*

bought two sets tired of inflating tubeless every time I cut the grass, heavy duty rubber, use spoon set to install and dish soap. I also used duct tape on the inner circumference of the wheel to give some cushion after cleaning rust with wire wheel

### ⭐⭐⭐⭐⭐ Great deal
*by L***P on November 7, 2025*

Great price. These tubes worked perfect for repairing my air compressor wheels. They seem to be heavy duty rubber material.

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**Shop now:** [https://www.desertcart.hr/products/562193188-18x8-50-8-18x9-50-8-inner-tubes-2-pack](https://www.desertcart.hr/products/562193188-18x8-50-8-18x9-50-8-inner-tubes-2-pack)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-23*