When you commission a new set of wheels, your wheel builder needs to know what axle spacing your bike uses.
Many people don’t know this detail, so here’s a bit of a guide to introduce you to the concepts of QR (quick release), thru-axle and BOOST.
Rather than re-invent the wheel and re-write the entire article, I’ll point you to the info on BikeRadar.com.
Click here for all the details!
In summary:
- Road bikes which use rim brakes mostly use 100mm x QR front and 130mm x QR rear axles.
- Disc brake road bikes mostly use 100mm x 12mm thru-axles front and 142mm x 12mm thru-axles rear
- Older MTB’s use 100mm x QR front and 135mm x QR rear
- Newer MTB’s use 100mm x 15mm thru-axles front and 142mm x 12mm thru-axles rear
- Many mountain bikes you can buy today use BOOST spacing, which is 110mm x 15mm front and 148mm x 12mm rear thru-axles.
