Mountain Bike Quick Release Standards

Then along came thru axles borrowed from mountain bikes where they.

Mountain bike quick release standards.

Skewers use a camming mechanism to secure the wheel to u shaped fork dropouts. Thru axles work better to keep wheels attached to the bike. Thru axles thread through the wheel hub and circular dropout holes. Some wheels and forks have swappable end caps or dropout inserts allowing for the use of either.

A guide to mountain bike axle standards. Old quick release hubs and 142 x 12mm thru axle hubs have the same widths between the hub flanges so there is no change in terms of hub flange positioning and wheel strength and stiffness. However the latest generation of bolt through mtb forks and frames utilizes larger diameter axles for additional. This works on frames with open dropouts only.

These were used for many years on mountain bikes using 100mm front and 135mm rear axle spacing i e. For most standard road and mtb bikes the wheel hubs will accommodate standard 5mm skewers. Both quick release skewers and thru axles are metal rods that keep bicycle wheels in place. The first crop of disc bikes used quick release with 100mm axle length at the front and either 130mm or 135mm at the rear.

So the width hasn t changed from quick release wheels on the front. As always there are some exceptions but we will focus on modern axle standards that are supported by pub wheels. Quick release skewers were a huge innovation for cycling offering fast reliable wheel swaps. Quick release thru axle.

The width from one face of the hub to the other a k a. Again the axle is part of the hub. Traditionally frames and forks had slotted dropouts. When choosing a quick release the most important things to note are skewer diameter skewer length materials and cam type.

Mountain bike axle standards explained. Quick release skewers are now mostly found on cheaper bikes jonny ashelford immediate media. If it is a thru axle it would have a ta in the description such as 110ta. Many bikes sold still use frames with open dropouts.

The end of the quick release skewer era. In bicycle nomenclature qr refers to a skewer and ta refers to a thru axle.