The standard BMX axle size is 14mm (especially for rear axles), although some race wheelsets or front wheels may use a 3/8” (10mm) axle that is lighter, but more prone to bending. Your axle choice will be determined by the size of the dropouts in your frame and forks, so check before you buy or upgrade.

How Do I Know What Size Axle I Need For My Bike?

For a front thru-axle, this is measured from the inside to the inside of your fork. For a rear thru-axle, this is measured from the inside to the inside of your frame at the drop-outs. The O.L.D. measurement is listed for many thru-axles but isn’t necessary if you know the overall length.

What Size Is A Standard Bicycle Axle Nut?

Bicycle Industry Threads Nominal Thread Size Example of Bicycle Uses 3/8 inch x 24 tpi Some solid-axle bike, including coaster brake 3/8 inch x 26 tpi Solid rear axle 10mm x 1mm Most quick-release rear axles, derailleur mounting bolts, brake lever adjusting barrels 10mm x 26 tpi Rear axle, quick-release, Campganolo®

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What Is 12mm Thru Axle?

Example of how to measure Thru Axle specifications. From this specification we know 142mm is the hub width (or frame spacing) and 12mm is the diameter of the axle. Total Thru Axle length from the seat to the end of the threads.

What Size Is A Quick Release Axle?

Quick-release axles are hollow tubes that slot into the dropouts. The front wheel is 9mm in diameter and 100mm wide. The rear wheel is 10mm in diameter and 135mm wide. The axle is held in place by a 5mm diameter quick-release skewer that slides through the hole in the axle.

Are Thru Axles Better?

  1. Thru-axles are safer- This is probably the biggest benefit for the average cyclist. Thru-axles improve safety by making it nearly impossible for the front wheel to come out of the dropouts while you’re moving. The dropouts can’t lift off of the axles vertically because they have holes instead of u-shaped slots.

What Is A Through Axle On A Bicycle?

A thru-axle (TA) is a wheel attachment system that secures a wheel on a hub between a pair of dropouts on a bicycle frame or fork. The thru-axle threads directly through the fork/frame holes and into the wheel hub, which makes the wheel secure from detaching.

What Is The Standard Thread Size On A Bicycle Pedal?

Bicycle pedals are commonly a 9/16″ x 20 threads per inch. The inside diameter of the internal thread (the “nut”) must be smaller. Measured in millimeters, the OD of the pedal is typically 14.2mm. For cranks, the internal thread is nominally 13mm.

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What Size Is A Pedal Wrench?

Pedal wrench flats are typically 15mm in size. 9/16″ (~14.3mm) is somewhat common on older pedals. 17mm and other sizes have been used, but you aren’t very likely to encounter them. (A “cone wrench” is thinner and shorter than a pedal wrench, and unable to provide appropriate durability or leverage for use on pedals.

Are Bike Pedal Threads Universal?

Bicycle pedals are not universal. The 9/16” is the near-standard in bike pedals, meaning that the majority of bikes can fit a 9/16” pedal. But since the 9/16” is not the only pedal size available, it can’t be truly said that bicycle pedals are universal. Luckily, there is an almost-standard pedal size available.

Can I Convert QR To Thru Axle?

If it’s a front hub and your fork uses a QR, you can buy a new thru-axle hub and an adapter that lets you use a thru-axle hub in a QR fork. About $15 for the adapter. This will give a fractionally better bit of firmness, but primarily, if you change your fork down the road, you can get one with thru-axle.

Why Are Axles Better?

Thru-axles increase the rigidity of the wheel-frame interface and allow more accurate wheel placement. This is particularly important for brake discs, where small pad clearances mean that a slight misalignment will cause rubbing. They also eliminate the risk of the wheel coming loose from the quick-release dropouts.

How Do I Know If My Bike Has A Thru Axle?

Thru Axles Your bike has a thru-axle if the “drop out” is a hole, rather than a U-shaped dropout. This provides added security because even if the lever on the end of the thru-axle flips open, it is still threaded into the frame, holding your wheel on.

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What Is The Difference Between Quick Release And Thru Axle?

With a thru-axle system, the entire axle goes – you guessed it – straight through the fork or frame, and the axle would have to come out before the wheel to bike connection was lost. On a quick release hub, the knurls on the end cap face bite into the frame or fork to make a secure connection with the hub.

What Is 15mm Thru Axle?

15mm thru-axle uses a different connection on the fork where the axle of the wheel allows a 15mm bolt to go through it. Same concept for a 20mm thru-axle. Some wheel manufacturers have adapters that allow you to use the same wheel with the different fork hub standards by swapping out the axle ends.

Are All Quick Release Skewers The Same Size?

Generally speaking, the answer is no. Not all skewers are compatible with all quick release wheels. There are different diameters and widths of skewers. But you are correct in saying the “standard” size for skewers is 100mm upfront and 130mm in the rear.