The Best Tranny Tube in 2021 | Reviews & Buying Guide

Picture this — you’re out on a beautiful sunny day with your favorite road bike riding through the neighborhood when suddenly the tire punctures. Not a very good start to a story, is it? We didn’t think so either.

But here’s a twist — you pull the best tranny tube out of your storage kit, and it’s an easy fix to save the day!

Now you might wonder what exactly is a tranny tube and how it works — is investing in one worth it? To answer all your questions and to make sure you stay on the right track (pun intended!), here’s our take on the best self-sealing tubes of 2021.

Let’s get started.

What Is a Self-Sealing Tube?

Any experienced biker will tell you that self-sealing tubes are actually magic. And they’re not wrong, given how fast these can fix a punctured tire. Widely used as alternatives to puncture repair kits, self-sealing tubes are inner bands for bike tires made of a particular substance — slime or adhesive fluid.

But these tubes are different from your tire’s typical inner band as they are, as the name suggests — “self-sealing.” This means that they work on their own. Hence, the setting up is not a hassle at all, and there’s not much work to be done after putting it on the wheel.

Another unique thing about these tubes is how they conform to your specific wheel’s shape and function. If you take good care of them, they can last you easily as long as ten years. Although some say patching these up after they take in a thorn or two is messy, it’s definitely a quick fix on the go.

How Does a Tranny Tube Work?

Ever wondered what keeps the air inside your ride’s tire holding up for so many miles of terrain? Well, guess what? That’s what the inner tubes are for. Tranny tubes for bicycles are actually what sits inside the tire quietly and make sure it stays pumped up while you go from A to B.

Most of the inner tubes have either a Schrader or Presta valve, which cater to the individual wheel type. The way this works is the thick tube placed inside the tire after being pumped up slightly. If it’s pumped with too much air, it might expand when it fits the wheel and cause a flat tire.

In the case of self-sealing tubes, the slime or sealant inside lathers the entire wheel as it spins, creating an added layer to prevent flatness. In the case of regular tubes, they still do the trick, but you’ve got to insert the sealant and fix it in place with adhesive material properly.

What Is an Inner Tube on a Bike?

For pneumatic tires like those on bicycles, the inner tubes form the interior and help retain its shape, give suspension and support. They are fitted inside the casing of the tire and inflated using the help of a valve stem.

This is a simple part of any bike that enables better rolling resistance, more stability, and lesser risk of a flat tire while out on the busy road. Usually, these tubes are made of either butyl or latex.

They are portable and can be carried around with you as a backup whenever necessary. When you get to particularly bumpy terrain, you can simply fit the tube inside the tire and rest assured. These can be used for both commuter bikes and mountain bikes.

Back in the day, each tire in your bicycle would come with its own inner tubes. But not anymore. The recent rise in tubeless tires is what sparked the hype around portable smart tubes.

5 Best Tranny Tube Reviews

Knowing your options before getting into the game is a pro move. And here are the reviews to help you with just that.

  1. BELL Beua9 Schrader – Self Seal Inner Tube

 BELL Beua9 Schrader Self Seal Inner Tube
BELL Beua9 Schrader Self Seal Inner Tube

If you’re planning to take on the Tongass Rainforest Ride or the Kincaid Park Trail in Alaska, then this first pick is a must-have for you. With its no-freeze and no-dry formula, this sealant will be ready for use at any rocky turn.

The BELL Beua9 is an excellent choice for cruiser and mountain bikes. Its tube weight is around 380 grams, and it has a Schrader valve. As long as your bike wheel’s inner diameter is 29 inches, this product will fit just fine.

As this tube has pre-installed sealant, you don’t have to get messy while setting it up. It can handle punctures by sealing them up for up to 2 years. While you’re riding on the trail, it can seal holes up to 1/8 inches without any additional help.

Pros

  • Provides excellent support and shape even after months of being inflated
  • Well-made with good quality material
  • Slime is quick to react
  • Price is reasonable
  • Good fit for mountain bikes with a wide range of widths available

Cons

  • It’s a little on the heavy side
  • Patching this up after serious damage might be a bit “sticky”

Special Note

As mentioned before, this is made of very durable material, and the sealant is perfectly suitable for biking in winter. The thicker grade rubber truly makes the biking experience worthwhile. And the excellent news for the impatient campers out there is that this company ships pretty fast, so that’s a bonus.

  1. Continental Race 28 – Bicycle Inner Tubes

Continental Race 28 - Bicycle Inner Tubes
Continental Race 28 – Bicycle Inner Tubes

Coming up next is this fantastic product from the brand Continental. Perfect for wheels having an inner diameter of 28 inches, this one’s a personal favorite of ours. And that’s actually for a good reason- it’s a pack of two for the price of one!

These not only look good but also feel good on the ride. For gravel tires, you can count on these to hold up well, given their Presta valves. While testing, we noticed that this didn’t leak as often as those typical budget brands. This ticked another box off our checklist.

Moreover, the valve used here has a removable core that allows you to replace the part that lets in the air when damaged. So while it is a bit more pricey than your basic inner tubes, it’s worth every penny as an investment.

Pros

  • Has a removable valve core
  • Comes in a pack of two
  • They’re very durable
  • As thick as specialized brand products
  • Can easily fit inside a seat pack as spares

Cons

  • For the inexperienced, installation may be troublesome
  • Price is higher than budget-buys

Special Note

One thing to keep in mind for Presta valves is that their lengths sometimes cause issues. Make sure it’s the right size for your wheel. Again, since this has 42mm valve stems, the depth of your rims should be 30mm or smaller.

It does work for 35mm ones too, but that’s like pulling up your skinny jeans to waist-level after a family feast.

  1. Slime Bike Inner Tube – Best Self Sealing Inner Tube

Bike Inner Tube with Slime Puncture Sealant
Bike Inner Tube with Slime Puncture Sealant

Looking for a product that saves not only your ride but also the planet? Well, look no further because here it is — the eco-friendly inner tube from the famous brand Slime. That’s right, this is yet another self-sealing product but with a twist. It’s non-flammable, non-corrosive, non-hazardous, and not to mention water-soluble.

So if you’re planning on doing some laps on a rainy day or going by that neighborhood stream, this one’s up for the ride. And the fact that it’s non-toxic makes things a whole lot easier to manage. There is no need to worry about getting messy when you finally need to patch some things up in the tire.

This has been designed with the Fibro-Seal Technology; it can instantly seal punctures up to 3mm. They’re extra strong and can take in a lot- a thorn, metal, thicket, or pin (you name it!) before actually giving in.

Pros

  • Friendly to the environment and non-toxic
  • Suitable for different weathers
  • Budget-friendly
  • Strong material resists different matter and seals instantly
  • Superbly durable

Cons

  • The slime splatters out at dramatically high pressure
  • You may end up with clogged valves if they’re not turned at a good angle

Special Note

While testing, we used a 90 lb electric bike and rode long distances. Adding this to the rider’s weight, we found the product to handle some heavy mass splendidly. Again, this is most effective at lower pressure levels. So if you usually ride at higher pressures, consider getting something different.

  1. Slime 30074 – Extra Strong Self Sealing Tube

Slime 30074 Extra Strong
Slime 30074 Extra Strong Self Sealing Tube

And here’s the last (but definitely not the least) pick on our list — the Slime 30074. These inner tubes are designed for perfection in performance. If you’re not in any budget constraints and looking for some tubes to last you a long while, stick to this one!

With maximum puncture protection provided by the self-sealing mechanism, you will never turn back to any other kind of tube after these. The Slime Store came out with these to fit tires of the size 26″.

Width range suitable for these start from 1.75″ and go all the way up to 2.125″. They can be used for mountain bikes as well as those fast motorized ones.

And the best thing is — this product has the “selective valve type” feature. That means you get to choose which valve you want to use. Besides the heavier weight, we couldn’t find anything else to actually complain about in case of these beauties.

Pros

  • Excellent durability
  • No need to use extra cans of slime
  • Provides firm support and suspension
  • Has good thickness
  • Suitable for electric bikes as well

Cons

  • You’ll need to spend some extra cash
  • These are 4x heavier than lightweight tubes

Special Note

Consider inflating these tubes only a little bit before putting them in the tire. Once you adjust them in place, raise the tubes up the rest of the way. Otherwise, there might be a size mismatch, and you’ll end up complaining that they sent you the wrong size (speaking from experience).

  1. SCK 2 Pack 20 Inch Bike Tubes

SCK 2 Pack 20 Inch Bike Tubes Plus
SCK 2 Pack 20 Inch Bike Tubes Plus

We’ve talked about the products that’ll get you through the winter. But what about the blazing hot summers? Don’t sweat it because this following product we’ve picked is going to tick that off the list too.

This product from SCK, made from high-quality butyl rubber, is the perfect pick for riding your bike in summer. The material is durable with better airtightness and heat resistance. It comes in a pack of two and also includes levers for assisting you in the changing process.

And if your kid is going nuts asking for some upgrade to their old bike, then there’s absolutely no better choice than this. These tubes are meant to fit 20-inch wheels perfectly and the width range being 1.75 to 1.25 makes it even better.

Pros

  • They are inexpensive
  • Durability is good, thanks to high-grade material
  • Don’t leak and are easy to install
  • Comes in a pack of two with extra levers
  • Perfect fit for kid’s bike wheels

Cons

  • Not a good fit for adult mountain bikes
  • Tools are not as durable as the tubes themselves

Special Note

While they’re easy to install, they don’t come with instructions. As a parent, if you don’t have any prior experience installing kid’s bike inner tubes, it’s best if you check out some tutorial videos before getting these. And by the way, you can use these for pony carts or other small wagons with the same sized tires.

7 Things You Should Know Before Tranny Tube of 2021

For every good product invented by mankind, there’s someone out there waiting to scam you. So here’s how you can avoid being handed something you don’t want—

  1. Tube Quality

First and foremost, keep your eye out for quality. If you buy something budget-friendly, you’re evidently going to have to settle for some moderate tubes but if you’re buying high-end, look for name brands who know what they’re playing. Make sure to look at the thickness of the rubber, the weight, and the overall design.

  1. Easy to Install

Now, if you’re one of those patient people who like to figure things out themselves and puzzle over instructions for hours, we can’t really tell you what to do.

But getting a set of tubes that are easy to install will save you time, and you know what they say— “time is money.” Besides, it’s best to be prepared if a flat tire stops you in your tracks during a race or trail ride.

  1. Long-Lasting

What’s the point in investing in something if it doesn’t last you a year or so? Getting new tubes and installing them every 6 months isn’t fun. So get the ones with maximum durability.

An excellent inner tube will last you as long as 10 years or more. However, if you’re getting them for a kid’s bike, consider this with a grain of salt. The ones made for kids will probably be a bit less durable than usual.

  1. Tube Size

This is something fundamental. If your wheel size is 26″ and the guy from the store tells you to get a smaller tube, don’t listen to him. Get the ones made specifically for that size.

You can check this yourself by looking at the sides of the tube and matching them to your tire. The first number is usually the diameter, and the second is the width.

As for the rims, try to get tubes that are well under your rim’s inner diameter because stretching space down there isn’t a very good idea. Sometimes, the sharpness of the rim might end up causing leaks even before you get to trial run the tubes.

  1. Tube Materials

Usually, tranny tubes are made from two types of rubber — butyl or latex. Each type of material has its perks as well as downsides. Latex is thinner and provides lesser rolling resistance thanks to added flexibility. But they’re also less porous than butyl, which means they leak air faster.

On the other hand, butyl material won’t lose air quickly, but they are lighter and more fragile. Hence, they have a higher chance of getting punctures. That is not to say there aren’t puncture-resistant butyl tubes. You just need to take better care of them.

  1. Inner Tube Valve Lengths

If you’re planning to get tubes with Presta valves, then the length is something to consider while buying. Presta valves often come with extenders, but you should look at how far your valve protrudes if they don’t have those available because this will let you attach a pump to it through the rim.

Some valves go as far as being 98mm, while others are as short as 27mm. Don’t be shy to use a valve that’s longer than what you need. Convenience is our priority, after all.

  1. Schrader Valves or Presta

Depending on what your wheel’s rim allows, you can either get a Presta or a Schrader valve tube. The former is the longer and narrower ones with removable cores. That means you can replace them when damaged. And the latter is a bit stubbier and looks more like the valves on care tires.

Frequently Asked Questions

Are self-sealing tubes any good?

  • In practice, self-sealing tubes worked pretty well for us- especially during winter.

Do tranny tubes work?

  • Tranny tubes work well if you’ve got the right size and material. Otherwise, it’s not going to do the trick.

How do you put air in a Slime self-sealing tube?

  • After setting the tire back in place with the rim and covering the valve hole, the tube should be put in properly. You’ve got to inflate it with enough air using a pump. But be careful not to overdo it since all you need is for the tube to retain its shape, not be rock solid with air already.

Are tranny tubes worth money?

  • Since these tubes are meant for small holes and lesser damages, they are worth the investment for regular cyclists. After all, the chances of you getting a huge puncture on a daily basis is (hopefully) quite slim.

How long do tranny tubes last?

  • As long as you don’t expose it to high levels of petroleum or ozone regularly, the inner tube will easily last you through a decade or so.

Final Words

When riding through a scenic landscape, the only thing running out of air should be your breath — not your tires. So, what are you waiting for? Invest in the best tranny tube for your bike and get going off to your next epic adventure.

Read our another guide from here: Cannondale Vs Specialized: Which Is The Better Bike Brand?

Leave a Comment