O.L.D. Guide

A Basic Guide to the O.L.D. of Hubs.

The spacing of a frame/fork is measured from the inside surfaces of the dropouts, where they come into contact with the locknuts of the wheel’s axle.

“O.L.D.” (Over-Lock-nut Dimension) is the hub spacing as measured from the outside face of the lock nuts.

So hub spacing and O.L.D. are synonomous - just that O.L.D. is the term generally used.

A Common Guide To Hub Spacings (O.L.D.)

• 100mm – Most modern front hubs, including quick release, BMX and some thru axle types
• 110mm – Some thru axle front hubs including 20mm and boost standards
• 110mm rear – B.M.X. | Singlespeed | Coaster
• 117mm rear - Sturmey Archer Kickback
• 120mm rear – Modern Track hubs
• 120-130mm - rear Flip Flop Hubs
• 126mm rear – Screw On Multispeed -Older 5/6 speed road bikes
• 130mm rear – Road Bikes - non disc
• 135mm rear – QR MTB | most QR disc road bikes
• 135mm front – Fat Bike
• 141mm rear – QR Boost
• 142mm rear – thru axle rear hubs
• 148mm rear – boost standard thru axle hubs
• 150mm front – Fat Bike
• 150mm rear – DH Bikes
• 157mm rear – Super Boost standard thru axle rear hubs
• 170/177/190 and 197mm rear – Fat bike rear hub sizes