---
product_id: 88765222
title: "2.75/3.00-21” Replacement Inner Tube 80/100-21(300/325-21) with TR4 Staight Valve Stem, Fits Motorcycle with 21'' Tires (2-Pack) - Made from Heavy Duty, Thick Premium Rubber"
brand: "ar-pro"
price: "HK$336"
currency: HKD
in_stock: true
reviews_count: 13
category: "Ar Pro"
url: https://www.desertcart.hk/products/88765222-2-75-3-00-21-replacement-inner-tube-80-100
store_origin: HK
region: Hong Kong
---

# Fits 2.75-3.00 inch wide, 21'' tires Quick install under 5 minutes Heavy-duty butyl rubber for puncture resistance 2.75/3.00-21” Replacement Inner Tube 80/100-21(300/325-21) with TR4 Staight Valve Stem, Fits Motorcycle with 21'' Tires (2-Pack) - Made from Heavy Duty, Thick Premium Rubber

**Brand:** ar-pro
**Price:** HK$336
**Availability:** ✅ In Stock

## Summary

> 🏍️ Ride Ready, Road Steady: Upgrade Your Inner Tube Game!

## Quick Answers

- **What is this?** 2.75/3.00-21” Replacement Inner Tube 80/100-21(300/325-21) with TR4 Staight Valve Stem, Fits Motorcycle with 21'' Tires (2-Pack) - Made from Heavy Duty, Thick Premium Rubber by ar-pro
- **How much does it cost?** HK$336 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/88765222-2-75-3-00-21-replacement-inner-tube-80-100)

## Best For

- ar-pro enthusiasts

## Why This Product

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

## Key Features

- • **Value-Packed 2-Pack:** Double up with this cost-effective set, perfect for proactive riders who never want to be caught off guard by a flat tire.
- • **Safety-First Airtight Seal:** Innovative heavy-duty design instantly seals punctures to protect you from sudden flats and keep you riding confidently in any weather.
- • **Effortless DIY Installation:** No special tools needed—swap your inner tube in under 5 minutes and get back on the road or trail faster than ever.
- • **Precision Fit for 21'' Tires:** Seamlessly compatible with a wide range of 21-inch motorcycle tires from 2.75 to 3.00 inches wide, ensuring a perfect OEM-grade replacement.
- • **Rugged Durability Meets Comfort:** Crafted from thick, premium butyl rubber that absorbs shocks and smooths out your ride, so you glide over bumps instead of feeling them.

## Overview

The AR-PRO 2.75/3.00-21 Replacement Inner Tube is a premium, heavy-duty butyl rubber tube designed for 21-inch motorcycle tires between 2.75 and 3.00 inches wide. Featuring a straight TR4 valve stem, it offers quick installation, superior puncture resistance with an airtight seal, and enhanced ride comfort by absorbing shocks. Sold as a convenient 2-pack, it’s the smart, reliable choice for riders seeking OEM-quality performance at a great value.

## Description

Buy 2.75/3.00-21” Replacement Inner Tube 80/100-21(300/325-21) with TR4 Staight Valve Stem, Fits Motorcycle with 21'' Tires (2-Pack) - Made from Heavy Duty, Thick Premium Rubber: Inner Tubes - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great quality - Great quality for the price point. This pack of 2 is a must have. No complaints!
Review: They are 21" inner tubes - They arrived in a plastic bag. Not sure how smart that was. I installed the first one, it had a hole in it. Did my installation cause it? Probably. Installed the second, same results. I can't blame the tubes though, but they are thin compared to the Kenda Tuff tubes I normally run. Installed a new Kenda tube. and finally got it right. I never got the chance to try either of them though, but I'm sure your results will be better.

## Features

- THE PERFECT REPLACEMENTS: AR-PRO Offers the perfect replacement for vehicle with 21” tires that are between 2.75'' to 3.00'' wide Inner Tubes For Less Cost From The OEM Yet Is Made From High-Grade, Heavy Duty Premium Rubber.
- GUARANTEED PROPER FIT: Our Inner Tubes Fit 2.75/3.00-21 (Front Wheel) As Well As 90/80 - 21, 90/90 - 21, 100/80 - 21.
- ADDS COMFORT TO YOUR RIDE: With thick butyl rubber that absorbs shocks, you won’t feel the bumps and hollows because your bike will glide along, protecting you from the force. Now that’s comfortable.
- SAFETY FIRST IS OUR MOTTO: Heavy-duty inner tube and tire. When and if punctured, it immediately creates an airtight seal to prevent damage, destruction and injury to the rider. Safe in any season or weather condition.
- NO SPECIAL TOOL INSTALLATION: In less than 5 minutes, you’ll be back on the trail or track! Replace the inner tube quick – so simple, easy and fast!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07J1P4FM5 |
| Best Sellers Rank | #761 in Automotive ( See Top 100 in Automotive ) #1 in Powersports Inner Tubes |
| Brand | AR-PRO |
| Compatible Tire Width Maximum | 3 Inches |
| Compatible Tire Width Minimum | 2.75 Inches |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,272) |
| Date First Available | October 4, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Diameter | 2.75 Inches |
| Item Weight | 2.29 pounds |
| Item Width | 2.75 Inches |
| Item model number | 2.75/3.00-21 |
| Manufacturer | AR-PRO |
| Manufacturer Part Number | 2.75/3.00-21 |
| Material | Butyl Rubber |
| Rim Diameter | 21 Inches |
| Size | 2.75/3.00-21" |
| Tread Depth | 3 Inches |
| UPC | 680499802219 |
| Valve Type | Staight |
| Wheel Size | 21 Inches |

## Product Details

- **Brand:** AR-PRO
- **Item Diameter:** 2.75 Inches
- **Material:** Butyl Rubber
- **Valve Type:** Staight
- **Wheel Size:** 21 Inches

## Images

![2.75/3.00-21” Replacement Inner Tube 80/100-21(300/325-21) with TR4 Staight Valve Stem, Fits Motorcycle with 21'' Tires (2-Pack) - Made from Heavy Duty, Thick Premium Rubber - Image 1](https://m.media-amazon.com/images/I/61SUHC+XNPL.jpg)
![2.75/3.00-21” Replacement Inner Tube 80/100-21(300/325-21) with TR4 Staight Valve Stem, Fits Motorcycle with 21'' Tires (2-Pack) - Made from Heavy Duty, Thick Premium Rubber - Image 2](https://m.media-amazon.com/images/I/7171TnudsoL.jpg)
![2.75/3.00-21” Replacement Inner Tube 80/100-21(300/325-21) with TR4 Staight Valve Stem, Fits Motorcycle with 21'' Tires (2-Pack) - Made from Heavy Duty, Thick Premium Rubber - Image 3](https://m.media-amazon.com/images/I/71AWphjzj9L.jpg)
![2.75/3.00-21” Replacement Inner Tube 80/100-21(300/325-21) with TR4 Staight Valve Stem, Fits Motorcycle with 21'' Tires (2-Pack) - Made from Heavy Duty, Thick Premium Rubber - Image 4](https://m.media-amazon.com/images/I/71AY8vAhPUL.jpg)
![2.75/3.00-21” Replacement Inner Tube 80/100-21(300/325-21) with TR4 Staight Valve Stem, Fits Motorcycle with 21'' Tires (2-Pack) - Made from Heavy Duty, Thick Premium Rubber - Image 5](https://m.media-amazon.com/images/I/71kM1zQUiJL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great quality
*by L***O on April 25, 2025*

Great quality for the price point. This pack of 2 is a must have. No complaints!

### ⭐⭐⭐⭐⭐ They are 21" inner tubes
*by V***R on August 15, 2021*

They arrived in a plastic bag. Not sure how smart that was. I installed the first one, it had a hole in it. Did my installation cause it? Probably. Installed the second, same results. I can't blame the tubes though, but they are thin compared to the Kenda Tuff tubes I normally run. Installed a new Kenda tube. and finally got it right. I never got the chance to try either of them though, but I'm sure your results will be better.

### ⭐⭐⭐⭐⭐ Holding up really well under all types of terrain.
*by R***N on June 30, 2025*

These tubes have held up for 8000 miles in my Dual sport. I have done both long distance road trips and long distance rough dirt/rocky rides with these tubes. I have had some tubes that are thicker than these but these seem to be doing really well. I put baby powder in when installing the tube and have a rim lock. So far no flats with these tubes. I keep them usually aired into the 18psi range but when on the longer road trips i go up to about 22 to 25 psi. I have aired down to 15 when in soft sand. Another motorcycle i have i keep them aired up to about 40 psi. No issues either way.

## Frequently Bought Together

- 2.75/3.00-21” Replacement Inner Tube 80/100-21(300/325-21) with TR4 Staight Valve Stem, Fits Motorcycle with 21'' Tires (2-Pack) - Made from Heavy Duty, Thick Premium Rubber
- NEIKO 20601A 14.5” Steel Tire Spoons Tool Set, Tire Tools Include 3 Piece Tire Spoons, 3 Piece Rim Protector, Valve Tool, 6 Piece Valve Cores, Motorcycle Tire Changer, Dirt Bike Tire Levers
- (2-Pack) 100/90-19 (4.10 x 19) Motorcycle Inner Tubes - 19" Dirt Bike Natural Rubber Tubes - Pinch and Puncture-Resistant Tubes - TR4 Valve Stems - Designed for Off-Road and Motocross Tires

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**Shop now:** [https://www.desertcart.hk/products/88765222-2-75-3-00-21-replacement-inner-tube-80-100](https://www.desertcart.hk/products/88765222-2-75-3-00-21-replacement-inner-tube-80-100)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-06*