---
product_id: 607522474
title: "Tusk Ultra Heavy Duty 4mm Motorcycle Tube 90/100x21"
brand: "tusk"
price: "A$99"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/607522474-tusk-ultra-heavy-duty-4mm-motorcycle-tube-90-100x21
store_origin: AU
region: Australia
---

# TR-4 Schrader valve for easy inflation High-quality butyl rubber durability 4mm ultra-thick puncture resistance Tusk Ultra Heavy Duty 4mm Motorcycle Tube 90/100x21

**Brand:** tusk
**Price:** A$99
**Availability:** ✅ In Stock

## Summary

> 🛞 Ride Fearlessly, Ride Tusk – The Ultimate Tube for Trail Dominance!

## Quick Answers

- **What is this?** Tusk Ultra Heavy Duty 4mm Motorcycle Tube 90/100x21 by tusk
- **How much does it cost?** A$99 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/607522474-tusk-ultra-heavy-duty-4mm-motorcycle-tube-90-100x21)

## Best For

- tusk enthusiasts

## Why This Product

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

## Key Features

- • **Optimized Fit:** Designed for 90-100mm tire widths and 21-inch diameter wheels, ensuring a perfect, snug fit.
- • **Ready for Adventure:** Heavy-duty construction supports extreme riding conditions, so you never miss a trail.
- • **Precision Valve Tech:** Equipped with a TR-4 Schrader valve for hassle-free inflation and secure air retention.
- • **Premium Butyl Rubber:** Crafted from high-grade rubber for extended tube life and reliable performance ride after ride.
- • **Unmatched Durability:** 4mm thickness engineered to conquer the harshest off-road terrains without flats.

## Overview

The Tusk Ultra Heavy Duty 4mm Motorcycle Tube is a robust, high-performance inner tube designed for 21-inch wheels with 90-100mm tire widths. Made from premium butyl rubber and featuring a thick 4mm wall, it offers superior puncture resistance and durability. Its TR-4 Schrader valve ensures easy inflation and reliable air retention, making it the go-to choice for serious off-road riders who demand toughness and longevity.

## Description

The Tusk Ultra Heavy Duty 4mm Motorcycle Tube is the perfect solution to your continuous flats! These tubes are super thick at 4mm for serious off-road riding. Made from high quality butyl rubber, the Ultra Heavy Duty tube is made to withstand the roughest terrain

## Features

- Super thick 4mm inner tube for the most extreme riding conditions
- Made from high quality rubber for a long lasting life
- TR-4 valve stem
- 4mm thickness for optimal performance and puncture resistance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | TUSK |
| Valve Type | Schrader |
| Material | Butyl Rubber |
| Wheel Size | 29 Inches |
| Item Diameter | 21 Inches |
| Compatible Tire Width Minimum | 90 Millimeters |
| Valve Length | 4 Inches |
| Item Weight | 1.51 Kilograms |
| Manufacturer | TUSK |
| Size | Tires Siz |
| Compatible Tire Width Maximum | 100 Millimeters |
| Item Package Dimensions L x W x H | 13.07 x 7.09 x 4.92 inches |
| Package Weight | 1.51 Kilograms |
| Brand Name | TUSK |
| Model Name | Ultra Heavy Duty 4mm |
| Part Number | 188-695-0004 |

## Product Details

- **Brand:** TUSK
- **Valve Type:** Schrader
- **Material:** Butyl Rubber
- **Wheel Size:** 29 Inches
- **Item Diameter:** 21 Inches

## Images

![Tusk Ultra Heavy Duty 4mm Motorcycle Tube 90/100x21 - Image 1](https://m.media-amazon.com/images/I/51e87DXnvnL.jpg)
![Tusk Ultra Heavy Duty 4mm Motorcycle Tube 90/100x21 - Image 2](https://m.media-amazon.com/images/I/51wBbeXPikL.jpg)

## Frequently Bought Together

- Tusk Ultra Heavy Duty 4mm Motorcycle Tube 90/100x21
- Tusk Ultra Heavy Duty 4mm Motorcycle Tube 110-120/100x18
- Tusk Motorcycle Rim Strip 21" x 7/8"

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**Shop now:** [https://www.desertcart.com.au/products/607522474-tusk-ultra-heavy-duty-4mm-motorcycle-tube-90-100x21](https://www.desertcart.com.au/products/607522474-tusk-ultra-heavy-duty-4mm-motorcycle-tube-90-100x21)

---

*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-27*