---
product_id: 537777247
title: "Bike Tire Liner, Inner Tube Bicycle Flat Protector Compatible with 12\" 16\" 18\" 20\" 24\" 26\" 27.5\" 29\""
brand: "julai"
price: "R$257"
currency: BRL
in_stock: true
reviews_count: 13
url: https://www.desertcart.com.br/products/537777247-bike-tire-liner-inner-tube-bicycle-flat-protector-compatible-12
store_origin: BR
region: Brazil
---

# Custom trim-to-fit design 1mm thick polyurethane shield Fits 12" to 29" tires Bike Tire Liner, Inner Tube Bicycle Flat Protector Compatible with 12" 16" 18" 20" 24" 26" 27.5" 29"

**Brand:** julai
**Price:** R$257
**Availability:** ✅ In Stock

## Summary

> 🛡️ Ride fearless, flat-free, and ahead of the pack!

## Quick Answers

- **What is this?** Bike Tire Liner, Inner Tube Bicycle Flat Protector Compatible with 12" 16" 18" 20" 24" 26" 27.5" 29" by julai
- **How much does it cost?** R$257 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/537777247-bike-tire-liner-inner-tube-bicycle-flat-protector-compatible-12)

## Best For

- julai enthusiasts

## Why This Product

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

## Key Features

- • **Dual Pack Convenience:** Includes two liners, perfect for protecting both tires and doubling your ride’s reliability.
- • **Effortless Installation:** Simply measure, trim, and insert—no tools or hassle needed to upgrade your flat protection instantly.
- • **Durable Polyurethane Armor:** Crafted from lightweight, wear-resistant polyurethane to guard against thorns, glass, and nails without adding bulk.
- • **Confidence-Boosting Warranty:** Backed by a 1-year warranty, ride worry-free knowing your tires are shielded by trusted quality.
- • **Universal Tire Compatibility:** Seamlessly fits a wide range of tire sizes from 12" to 29", ensuring versatile protection for every ride.

## Overview

The JULAI Bike Tire Liner is a universal flat protector compatible with tire sizes from 12" to 29". Made from high-quality, lightweight polyurethane with a 1mm thickness, it offers durable defense against punctures from thorns, glass, and nails. Easy to install with a trim-to-fit design, it comes in a convenient two-pack and includes a 1-year warranty for reliable, long-lasting tire protection.

## Description

Our fat bike tire liner serves as a protective barrier, reliably protecting your inner tube from thorns, glass, nails, and sharp debris. Designed to be compatible with tires from 20", 24", 26", 27.5", to 29", this universal fit ensures broad application. With a width of 80mm/3.15", it perfectly fits 3"-4" wide tires, including specific size like fat tire liners 20 x 4.0 and fat tire liners 26 x 4.0. Made of high-quality Polyurethane,our fat tire bike tire liners (inner tube flat protectors) feature a lightweight design, excellent wear endurance, and great flexibility, and easy to install，just trim to size and place between tube and tire. Enjoy long lasting fat tire liners tube protection, reduce sudden flats, and riding with confidence.

## Features

- One size Fits for bike tire 12" 16" 18" 20" 24" 26" 27.5" 29", Comes in one pair, for two tires.
- LxW: 2300x34mm, Thickness: 1mm
- Made by high quality Polyurethane, light weight and wear resistant.
- Easy to install, just measure and trim it, you can stop the thorns, glass, thorns, nails and other trail debris from penetrating through and puncturing the tube.
- Warranty: One year

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | JULAI |
| Valve Type | Schrader |
| Material | ‎Polyurethane |
| Wheel Size | 29 Inches |
| Item Diameter | 29 Inches |
| Item Width | 34 Millimeters |
| UPC | 740283686170 |
| Compatible Tire Width Minimum | 34 Millimeters |
| Manufacturer | Ju Lai Technology |
| Size | one size for all |
| Compatible Tire Width Maximum | 34 Millimeters |
| Item Package Dimensions L x W x H | 7.32 x 2.91 x 1.54 inches |
| Package Weight | 0.22 Kilograms |
| Item Dimensions  LxWxH | 90.6 x 1.34 x 0.04 inches |
| Brand Name | JULAI |
| Warranty Description | 1 year |
| Model Name | JLBK200602 |
| Color | 29"x1.5-2" |
| Suggested Users | Unisex-Youth, Unisex-Adult |
| Number of Items | 2 |
| Part Number | JLBK200602 |
| Included Components | No |
| Sport Type | Cycling |

## Product Details

- **Brand:** JULAI
- **Valve Type:** Schrader
- **Material:** ‎Polyurethane
- **Wheel Size:** 29 Inches
- **Item Diameter:** 29 Inches

## Images

![Bike Tire Liner, Inner Tube Bicycle Flat Protector Compatible with 12" 16" 18" 20" 24" 26" 27.5" 29" - Image 1](https://m.media-amazon.com/images/I/51stNyZXnzL.jpg)
![Bike Tire Liner, Inner Tube Bicycle Flat Protector Compatible with 12" 16" 18" 20" 24" 26" 27.5" 29" - Image 2](https://m.media-amazon.com/images/I/61cAx7s4+ML.jpg)
![Bike Tire Liner, Inner Tube Bicycle Flat Protector Compatible with 12" 16" 18" 20" 24" 26" 27.5" 29" - Image 3](https://m.media-amazon.com/images/I/710qR9C9vRL.jpg)
![Bike Tire Liner, Inner Tube Bicycle Flat Protector Compatible with 12" 16" 18" 20" 24" 26" 27.5" 29" - Image 4](https://m.media-amazon.com/images/I/61HvzHj10sL.jpg)
![Bike Tire Liner, Inner Tube Bicycle Flat Protector Compatible with 12" 16" 18" 20" 24" 26" 27.5" 29" - Image 5](https://m.media-amazon.com/images/I/71BAzFc9HCL.jpg)

## Available Options

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

## Questions & Answers

**Q: How many count per package?**
A: 2 rolls.

**Q: How to choose size?**
A: Each roll of tire liner is 7 FT, Fit up to 29 inch. We have different width liners, please choose the liner which is close width showed on your tire.

**Q: Does the type of valve affect liner usage?**
A: No, different valve types do not have affect product use, there are nothing valve restrictions.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Works well with a bit of fitting
  

*by N***E on Reviewed in the United States on December 13, 2023*

These tire liner are sized right for width but require length trimming. I also trimmed round the square corners. After fitting, they installed normally and I expect normal function.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good protection
  

*by G***Y on Reviewed in the United States on October 21, 2023*

I have a 27.5” mountain e-bike. I started to go through a phase of flats from burrs. I have since put these liners on my front and back tires. It’s a real pain to remove the back tire on an e-bike, because of the motor. The back tire has to go in to a slot with a special keyed washer. These tire liners are doing the job. I’ve ridden over acorns, walnuts, and tons of burrs. No flats to date. E-bikes weigh twice the weight of a regular bike, so there no fun to push with a flat tire.

### ⭐⭐⭐ 3.0 out of 5 stars







  
  
    Something is better than nothing!
  

*by R***B on Reviewed in the United States on November 20, 2023*

If you're looking for real armor to prevent any and all flats from debris, then just save up to buy Tannus bicycle tire armor.If you're looking for something to have your tire hold out for longer if you live somewhere with tons of puncture hazards, then this is your product. I've had two flats while using these on brand new tires, but that's less than I would have had if I had nothing. This stuff is easy to install. I had never replaced a bike tire on my own before this. You can install it too it if you have a monkey's brain and access to YouTube, if you need to see someone do it, not all bikes are made perfect.I live in God's paradise of the SF Bay Area where there is tons of different types of glass covering the streets and sidewalks (car break-ins, beer bottles). I go through bicycle tubes like nobodies business.

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**Shop now:** [https://www.desertcart.com.br/products/537777247-bike-tire-liner-inner-tube-bicycle-flat-protector-compatible-12](https://www.desertcart.com.br/products/537777247-bike-tire-liner-inner-tube-bicycle-flat-protector-compatible-12)

---

*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-01-27*