---
product_id: 664286474
title: "TPU Inner Tube Upgraded Durability for Road Bike MTB Gravel Bicycle Tire 700cc x 18-32, 33-50c, 29'', 27.5'' Bicycle Tube 45MM 65MM 85MM Length of Presta Valve- 2 PCS (One Pair)"
brand: "thinvik"
price: "$38.46"
currency: USD
in_stock: true
reviews_count: 9
category: "Thinvik"
url: https://www.desertcart.us/products/664286474-tpu-inner-tube-upgraded-durability-for-road-bike-mtb-gravel
store_origin: US
region: United States of America
---

# Metallic threaded Presta valve High puncture resistance TPU material Fits 700cc, 29", 27.5" tires TPU Inner Tube Upgraded Durability for Road Bike MTB Gravel Bicycle Tire 700cc x 18-32, 33-50c, 29'', 27.5'' Bicycle Tube 45MM 65MM 85MM Length of Presta Valve- 2 PCS (One Pair)

**Brand:** thinvik
**Price:** $38.46
**Availability:** ✅ In Stock

## Summary

> 🚴‍♀️ Upgrade your ride with the tube that’s tougher, lighter, and ready to roll!

## Quick Answers

- **What is this?** TPU Inner Tube Upgraded Durability for Road Bike MTB Gravel Bicycle Tire 700cc x 18-32, 33-50c, 29'', 27.5'' Bicycle Tube 45MM 65MM 85MM Length of Presta Valve- 2 PCS (One Pair) by thinvik
- **How much does it cost?** $38.46 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/664286474-tpu-inner-tube-upgraded-durability-for-road-bike-mtb-gravel)

## Best For

- thinvik enthusiasts

## Why This Product

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

## Key Features

- • **Pocket-Sized Spare:** 70% smaller and lighter than butyl tubes—carry your backup anywhere with zero bulk
- • **Ride Uninterrupted:** TPU’s superior puncture resistance keeps you rolling without the dreaded flats
- • **Durable Valve Upgrade:** Metallic valve stem with reinforced base for long-lasting reliability
- • **Seamless Compatibility:** Perfect fit for gravel, MTB & road tires from 700cc 33-50c to 29" x 1.5-1.75
- • **Effortless Installation:** Longer, wider, thicker design makes mounting a breeze and hand-friendly

## Overview

The Thinvik TPU Inner Tube is engineered for serious cyclists seeking durability and performance. Compatible with a wide range of gravel, MTB, and road bike tires (700cc, 29", 27.5"), it features a robust metallic Presta valve and TPU construction for exceptional puncture resistance. Its compact size makes it an ideal lightweight spare, while the upgraded design ensures easy installation and longer service life. Perfect for professionals who demand reliability and efficiency on every ride.

## Description

desertcart.com : Thinvik TPU Inner Tube Upgraded Durability for Gravel Bike Tire 700cc 33-50c/29' 'x 1.5-1.75 Bicycle Tube 65MM Length of Presta Valve- 2 PCS (One Pair) : Sports & Outdoors

Review: Sturdy valve, lightweight, A new riding experience - I installed the tubes in new wheels, rim strips and new tires. The installation was simple. The metal valve fit well and feels sturdy. At the base of the valve is a small plastic reinforcement disc that fits into the hole for the valve stem. I would caution the use of frame pumps that attach directly to the Presta valve without a flexible hose. this is a common cause of failure on Presta valves on any tubes. The light weight of the tubes is very noticeable. I noted it uses less effort to pedal my bicycle. I feel that for my riding style this lightweight tube is far easier than using a tubeless set up. The tubes hold air without issue. I believe this product to be a time saver because the regular (non tubeless) tires are easy to mount and fiddling with sloppy sealant on a bike tour is arduous. I will use this TPU set up going forward. TPU tubes.... 🤩
Review: Better than the pink TPU tubes - I'm very happy with TPU tubes for the performance they deliver. My first time with TPU was another brand that was noticably lighter and thinner. I got a fair amount of flats so tried these that were slightly heavier. You can feel they are much thicker and hopefully more flat resistant. Been riding couple months now and so far so good. I don't feel any weight penalty over the lighter pink tubes. In general patching TPU tubes are the downside to deal with. I found a permanent fix that has been working great for me. Cut up an old TPU tube for patches. Use loctite vinyl, cloth & plastic glue. This is a flexible glue. I've done 3 patches and none have leaked for few months. I haven't had to patch these yellow tubes so my recipe is not tested on these new tubes yet .

## Features

- Compatibility. This TPU inner tube can fit Gravel Bike with bike tire of 700cc 33-50c/29' 'x 1.5-1.75. Please order without worry.
- Better Valve Stem. Upgrade plastic valve stem to Metallic Threads, which significantly improves its durability and prolongs its service life, making them could be used for a longer time compared to those made of plastic.
- Easier Installation Comes. Longer, Wider and Thicker. These upgraded designs allow our TPU inner tube to have a simpler installation than other normal standard TPU tubes and make your hands more comfortable during assembly and disassembly.
- Ideal Substitute As Spare Tire. Thanks to about 70% Smaller Size than conventional butyl rubber inner tube, now it is easier to have this as your spare tire and take it out with you by simply putting in pocket,bag when you go out for riding.
- Superb Resistance to Puncture. TPU material promises cyclists to own a sturdier inner tube, greatly helping you reduce the possibility of getting punctured and keep your cycling journey uninterrupted and happy.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D9K5YNMQ |
| Best Sellers Rank | #50,429 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #205 in Bike Tubes |
| Brand | Thinvik |
| Brand Name | Thinvik |
| Color | Gravel 65MM 700cc 33-50c/29' 'x 1.5-1.75 |
| Compatible Tire Width Maximum | 1.97 Inches |
| Compatible Tire Width Minimum | 1.3 Inches |
| Customer Reviews | 3.7 3.7 out of 5 stars (223) |
| Date First Available | July 16, 2024 |
| Included Components | 1 pair of TPU inner tube and instruction |
| Item Package Dimensions L x W x H | 4.84 x 4.06 x 2.13 inches |
| Manufacturer | Thinvik |
| Material | TPU |
| Model Name | TPUTube-GRP65-PinH-TV-2P |
| Package Weight | 0.17 Kilograms |
| Size | 1 pair of 700cc 33-50c/29''x 1.5-1.75 65mm |
| Sport Type | Cycling |
| Suggested Users | unisex-adult |
| Valve Length | 65 Millimeters |
| Valve Type | Presta |
| Warranty Description | 1 year warranty |
| Wheel Size | 28 Inches |

## Product Details

- **Brand:** Thinvik
- **Compatible Tire Width Minimum:** 1.3 Inches
- **Material:** TPU
- **Valve Type:** Presta
- **Wheel Size:** 28 Inches

## Images

![TPU Inner Tube Upgraded Durability for Road Bike MTB Gravel Bicycle Tire 700cc x 18-32, 33-50c, 29'', 27.5'' Bicycle Tube 45MM 65MM 85MM Length of Presta Valve- 2 PCS (One Pair) - Image 1](https://m.media-amazon.com/images/I/71cDaXucBuL.jpg)

## Questions & Answers

**Q: What about the compatibility? Can I use TPU Inner Tubes on my bike?**
A: Our TPU inner tube can fit Road Bike of different tire sizes, including 18-32c. For Gravel Bike is 700cc 33-50c/29' 'x 1.5-1.75 and for the MTB cyclist there are 2 tire sizes compatible, 27.5''x1.75-2.3 and 29''x 1.9-2.5.

**Q: I have seen some TPU tubes got bump after inflating, what was that?**
A: TPU Inner tubes should not be inflated too much before whole installation is done, or it will cause bump happened, which is irreversible damage. Please do not inflate over 5psi/0.35 bar in your first test.

**Q: Never try TPU Inner Tubes before, do you have specific instructions?**
A: That is for sure. The instruction is right inside the package, please follow the installing steps if you do not know how to assemble.

**Q: If there is technical failure of TPU Inner tubes, can I get any replacement?**
A: Of course. We will send you free replacement if we confirm that is a technical failure together. We do not suggest cyclists using any adhesive tapes or patches to try to repair a broken TPU inner tube, which is meaningless and a waste of time.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Sturdy valve, lightweight, A new riding experience
*by A***G on January 1, 2025*

I installed the tubes in new wheels, rim strips and new tires. The installation was simple. The metal valve fit well and feels sturdy. At the base of the valve is a small plastic reinforcement disc that fits into the hole for the valve stem. I would caution the use of frame pumps that attach directly to the Presta valve without a flexible hose. this is a common cause of failure on Presta valves on any tubes. The light weight of the tubes is very noticeable. I noted it uses less effort to pedal my bicycle. I feel that for my riding style this lightweight tube is far easier than using a tubeless set up. The tubes hold air without issue. I believe this product to be a time saver because the regular (non tubeless) tires are easy to mount and fiddling with sloppy sealant on a bike tour is arduous. I will use this TPU set up going forward. TPU tubes.... 🤩

### ⭐⭐⭐⭐⭐ Better than the pink TPU tubes
*by A***R on October 9, 2024*

I'm very happy with TPU tubes for the performance they deliver. My first time with TPU was another brand that was noticably lighter and thinner. I got a fair amount of flats so tried these that were slightly heavier. You can feel they are much thicker and hopefully more flat resistant. Been riding couple months now and so far so good. I don't feel any weight penalty over the lighter pink tubes. In general patching TPU tubes are the downside to deal with. I found a permanent fix that has been working great for me. Cut up an old TPU tube for patches. Use loctite vinyl, cloth & plastic glue. This is a flexible glue. I've done 3 patches and none have leaked for few months. I haven't had to patch these yellow tubes so my recipe is not tested on these new tubes yet .

### ⭐ Defective tube causes dangerous blowout
*by R***N on August 2, 2025*

Thinvik road tubes are dangerous, particularly for larger tire sizes in the recommended range. As others have shown here, the overlapped joint does not expand properly, causing the adjacent ends to bulge into the empty space where they may blow out suddenly. The photo shows two inflated tubes with the overlapped joint restriction and a third tube in which the adjacent end has blown out suddenly. I am riding gatorskin 700x32c road tires and installed the Thinvik road tubes specified for 18 to 32 mm tires. I ride every other day, running the rear at 61 psi and front 58 psi. The Thinvik tubes would lose 8 to 11 psi over two days. The front tube was replaced after a puncture by a ~3/8 inch thorn. The new front tube was installed and the first ride was uneventful. When pumping up for the second ride I found the tube had lost 40 psi over two days. I removed the tube, checked for leaks, and replaced it. After 16 miles, the front tube suddenly blew out with a loud pop. This tube is shown in the photo. Fortunately, I was at the top of a hill (and within 100 m of a bike shop) riding slowly in a straight line. The adjacent ends bulged into the empty joint space where they blew out instantly without warning. If this tube had blown out at high speed or in a corner it could have caused a crash. I installed a butyl tube in the front but continued riding the Thinvik tube in the rear. After 340 miles, the tube lost 37 psi over two days and I immediately installed a butyl tube. The joint in this tube is shown in the photo. This problem MIGHT be less serious for smaller tire sizes with less tube expansion? Also, this is not an issue for all tpu tubes, I have used one Bibike 18-32c mm tube and it showed reasonably uniform expansion.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-13*