CMS-Japanese Motorcycle Supply Parts


Want to know how close your front disc brake rotors are to the limit? They're pretty easy to measure.

Here's how to assess the remaining life left in a Honda CB125E or GLH125SH motorcycle's front brake disc or rotor as shown on MotoFaction.org.

Grab a measuring device - a set of digital calipers is convenient:

Here's how to assess the remaining life left in a Honda CB125E or GLH125SH motorcycle's front brake disc or rotor as shown on MotoFaction.org.

Sometimes there's a lip on the edge of the rotor:

Here's how to assess the remaining life left in a Honda CB125E or GLH125SH motorcycle's front brake disc or rotor as shown on MotoFaction.org.

There is only a barely discernible lip here since the rotors are basically new, but if you have a more marked ridge a set of calipers with a slight indent like this is quite handy:

Here's how to assess the remaining life left in a Honda CB125E or GLH125SH motorcycle's front brake disc or rotor as shown on MotoFaction.org.

Put the calipers on the rotor:

Here's how to assess the remaining life left in a Honda CB125E or GLH125SH motorcycle's front brake disc or rotor as shown on MotoFaction.org.

These rotors have around 200km on them, and measure out to be 4mm precisely. How close is that to the limit?

Here's how to assess the remaining life left in a Honda CB125E or GLH125SH motorcycle's front brake disc or rotor as shown on MotoFaction.org.

Rather a long way - the limit is 3.5mm, as you can see from the inscription on the rotor itself.


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CMS-Japanese Motorcycle Supply Parts

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