What Are Bike Thru Axles?

Thru axles are a mechanism for attaching wheels to a vehicle. They are used to hold the hubs in place between the dropouts in the frame and fork. Thru axle dropouts have holes rather than slots, as opposed to slotted dropouts. Thick and sturdy, the through axle is threaded on one end and has a hex head on the other. It is inserted into the wheel from the side.

For bicyclists, a thru-axle (TA) is the wheel attachment mechanism that holds an unbalanced bicycle wheel on a hub between two dropouts on a bicycle frame or fork. This is accomplished by threading the thru-axle through the fork/frame holes and into the wheel hub, preventing the wheel from coming loose.

Does my bike have a thru axle?

If the ″drop out″ on your bike is a hole rather than a U-shaped dropout, your bike has a through axle. Even if the lever on the end of the through axle flips open, the axle is still threaded into the frame, which holds your wheel in place. This gives an additional layer of security.

What is a thru-axle on a road bike?

Through-axles provide for a more exact alignment of the axle in the frame than conventional axles. Furthermore, with a quick-release mechanism, wheel location in the frame is considerably more exact than with a traditional arrangement. So thru-axles work well with disc brakes, which is the primary reason why you’ll find them on the vast majority of disc-brake road bikes on the market today.

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What is the difference between thru-axles and wide axles?

A wider axle allows the flanges on either side of the hub to be positioned further apart, improving the bracing angle of the wheel and, as a result, the overall strength of the wheel. When it comes to mid-range and higher-spec bikes with Boost spacing, thru-axles have become the standard.

What are the different types of bike axles and wheels?

However, there are a few variations, just as there are with mountain bikes. These days, many mountain bikes come equipped with boost wheels and axles, and this standard may also be found on a small number of gravel bikes and electric cycles. A Boost front axle measures 110mm in length and 12mm in width, while a rear axle measures 148mm in length and 12mm broad.

What are the advantages of thru axles on bikes?

  • Thru-axles enhance the stiffness of the wheel-frame interface, allowing for more accurate wheel installation and increasing the overall performance.
  • This is especially critical for brake discs, because the narrow pad clearances mean that even a minor misalignment may result in rubbing if the disc is not properly aligned.
  • Additionally, they reduce the possibility of the wheel becoming dislodged from the quick-release dropouts.

Does my bike have a thru axle?

If the ″drop out″ on your bike is a hole rather than a U-shaped dropout, your bike has a through axle. Even if the lever on the end of the through axle flips open, the axle is still threaded into the frame, which holds your wheel in place. This gives an additional layer of security.

Is my bike quick release or through axle?

If you have rim brakes, you will have a skewer with a fast release mechanism installed. If you have disc brakes, it is quite probable that you have through axle skewers as well. The skewer on a disc brake road bike that is older than 2019 may be a fast release skewer, however disc brake road bikes built now are almost exclusively through axle.

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What is a 12mm thru-axle?

A hundred and twelve millimeters long and twelve millimeters broad are now pretty much conventional for road bike thru-axles up front (although some early thru-axle road bikes had 15mm diameter thru-axles). Rear thru-axles are typically 142mm long and 12mm in diameter, however there have been a few instances when 135mm thru-axles have been seen on bikes.

Are thru axles better than QR?

  • The final result is a firmer front end, as well as the removal of brake rub on the front wheels.
  • Furthermore, by including a camming mechanism (such as the QR lever), you may still remove your wheel in a short amount of time.
  • Thru axles are safer and increase the overall performance of the bike.
  • It’s no surprise that the QR skewer is rapidly becoming obsolete on high-level mountain bike competitions.

Can I convert quick release to thru axle?

There are frames available from some manufacturers that include detachable rear dropouts that can be switched out for through-axle, quick release, or other style dropouts. Some forks allow you to replace only the lowers, which is a more cost-effective (but never inexpensive) option.

Do you grease a thru axle?

Skewer with a Thru-Axle or a Quick Release In contrast to a QR axle, a thru-axle is hollow, but it is stronger and thicker in construction. It employs the same camming mechanism as a QR axle. Despite the fact that a QR and a thru-axle are significantly different, they are both greased in the exact same manner.

Are all thru axles the same?

What is the reason for the varying sizes? Thru axles, like many other items in the cycling industry, are not standardized in any way. The through axle standard for your bike will be determined by the manufacturer of your bike as well as the intended purpose of your bike.

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What is 15mm thru axle?

When a 15mm through axle is used, it makes use of a separate connection on the fork where the axle of the wheel is able to accommodate a 15mm bolt. The same approach applies to a 20mm thru axle. It is possible to utilize the same wheel with various fork hub standards by switching out the axle ends, which is available from several wheel manufacturers.

Are thru axles necessary?

Thru Axles are no more ‘essential’ than disc brakes, 11-speed transmissions, or tubeless tires in terms of functionality.

Are thru axles universal?

In addition to taking the uncertainty out of picking your axle, the new Universal Thru-Axle provides future proofing in case you move bikes or have several bikes with different axles.

Can you convert a QR hub to thru axle?

If your front hub is a thru-axle and your fork is a QR, you may purchase a replacement thru-axle hub as well as an adapter that allows you to utilize a thru-axle hub in a QR frame. The adaptor costs around $15. This will provide a slight increase in stiffness, but the primary benefit is that if you replace your fork down the line, you will be able to obtain one with a thru-axle.

How do I know if my bike has a quick release?

The simplest method to know is whether or not you are able to remove and change your wheel without the need of any tools. There will be a lever that you will be able to open and twist to access the room. The metal skewer will be undone as a result of this. When you look at a quick-release mechanism, you will see that it has an acorn nut on one side and a lever on the other.

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