---
product_id: 378769905
title: "Tusk Heavy Duty 2 mm Motorcycle Inner Tube 80/100×21 — Butyl Rubber, tr‑4 Valve, Extra Thick Replacement Tube"
brand: "tusk"
price: "¥1775"
currency: JPY
in_stock: false
reviews_count: 1
url: https://www.desertcart.jp/products/378769905-tusk-heavy-duty-2-mm-motorcycle-inner-tube-80-100
store_origin: JP
region: Japan
---

# Premium butyl rubber for superior air retention & durability Centered TR-4 valve for universal rim compatibility 2mm extra thick wall for max puncture resistance Tusk Heavy Duty 2 mm Motorcycle Inner Tube 80/100×21 — Butyl Rubber, tr‑4 Valve, Extra Thick Replacement Tube

**Brand:** tusk
**Price:** ¥1775
**Availability:** ❌ Out of Stock

## Summary

> 🛞 Tougher Tubes, Smoother Rides — Don’t Get Left Deflated!

## Quick Answers

- **What is this?** Tusk Heavy Duty 2 mm Motorcycle Inner Tube 80/100×21 — Butyl Rubber, tr‑4 Valve, Extra Thick Replacement Tube by tusk
- **How much does it cost?** ¥1775 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/378769905-tusk-heavy-duty-2-mm-motorcycle-inner-tube-80-100)

## 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

- • **Fit & Inflate with Ease:** Centered TR-4 valve stem fits most 21" rims for hassle-free inflation anywhere.
- • **Ride Harder, Last Longer:** 2mm thick wall defends against pinch flats and abrasions on rugged trails.
- • **Precision Engineered Size:** 80/100×21 sizing tailored for popular front tires in dual sport and enduro bikes.
- • **Stay Inflated, Stay Ready:** Butyl rubber ensures your tube holds air longer, reducing roadside surprises.
- • **Your Ultimate Trail Backup:** Lightweight yet tough, perfect for daily repair kits or upgrading your stock tube.

## Overview

The Tusk Heavy Duty 2mm Motorcycle Inner Tube (80/100×21) is crafted from premium butyl rubber with an extra-thick wall to resist punctures and abrasion. Featuring a centered TR-4 valve for easy inflation and compatibility with most 21" rims, it’s engineered for durability and reliable air retention—ideal for trail riders and daily commuters seeking a dependable upgrade or spare.

## Description

The Tusk heavy duty 2 mm motorcycle inner tube in size 80/100×21 is built for riders who want more durability than typical stock tubes. The added thickness helps resist pinch flats and abrasion when riding challenging terrain or over sharp edges. Made from quality butyl rubber, this tube balances flexibility with strong air retention and longevity. The TR‑4 valve stem is centered for compatibility with most rims, ensuring dependable access for inflation. Whether you're repairing a damaged tube or carrying a trusted spare for off‑road rides, this tube is ready. Its 80/100×21 specification fits many 21" front tires used in dual sport and enduro setups. Important note: Always verify your tire and rim compatibility before installation and ensure there is no rim damage or sharp edges. Use this tube for trail, street, or mixed terrain riding. It makes a practical upgrade over standard tubes, and a reliable option to carry in your toolkit.

## Features

- Extra Thick 2 mm Wall — provides stronger puncture resistance versus standard tubes
- Premium Butyl Rubber — good air retention and resistance to aging / heat
- Centered TR-4 Valve Stem — fits common rim designs and allows easy inflation
- Precise 80/100×21 Sizing — engineered to match common 21" front tire dimensions
- Reliable Backup or Replacement — ideal for trail use, daily repair kit, or upgrade

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Tusk |
| Part number | 193-649-0001 |
| Item Weight | 840 g |
| Manufacturer reference | 193-649-0001 |
| Size | 0.1" x 3.1"-3.1" |
| Color | Black |
| Material | Rubber |
| Item Package Quantity | 1 |
| Cutting Diameter | 2 Millimeters |
| Batteries Included? | No |
| Batteries Required? | No |
| Item diameter | 2 Millimeters |

## Product Details

- **Brand:** TUSK
- **Valve type:** TR-4
- **Material:** Rubber
- **Wheel size:** 14 Inches
- **Item diameter:** 2 Millimeters

## Images

![Tusk Heavy Duty 2 mm Motorcycle Inner Tube 80/100×21 — Butyl Rubber, tr‑4 Valve, Extra Thick Replacement Tube - Image 1](https://m.media-amazon.com/images/I/51QH1vfqg2L.jpg)
![Tusk Heavy Duty 2 mm Motorcycle Inner Tube 80/100×21 — Butyl Rubber, tr‑4 Valve, Extra Thick Replacement Tube - Image 2](https://m.media-amazon.com/images/I/81TVhDsinmL.jpg)
![Tusk Heavy Duty 2 mm Motorcycle Inner Tube 80/100×21 — Butyl Rubber, tr‑4 Valve, Extra Thick Replacement Tube - Image 3](https://m.media-amazon.com/images/I/81hiIfQIg2L.jpg)
![Tusk Heavy Duty 2 mm Motorcycle Inner Tube 80/100×21 — Butyl Rubber, tr‑4 Valve, Extra Thick Replacement Tube - Image 4](https://m.media-amazon.com/images/I/81XT1OKBhKL.jpg)
![Tusk Heavy Duty 2 mm Motorcycle Inner Tube 80/100×21 — Butyl Rubber, tr‑4 Valve, Extra Thick Replacement Tube - Image 5](https://m.media-amazon.com/images/I/81W39izJ0lL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Good price , it works
  

*by J***A on Reviewed in the United States on 15 January 2022*

Good product , works as expected

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**Shop now:** [https://www.desertcart.jp/products/378769905-tusk-heavy-duty-2-mm-motorcycle-inner-tube-80-100](https://www.desertcart.jp/products/378769905-tusk-heavy-duty-2-mm-motorcycle-inner-tube-80-100)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-29*