K100 Front End Setup

derailment · Jul 2, 2020

Anybody have a clue as how to set the sag on a K100 fork? These are Brembos, and have the plug on top that is held with an open end wrench, with the socket head fill bolt within. Currently my sag is +-2.5" and I'd like to bring it up an inch.

jpdicarlo · Jul 2, 2020

The brakes may be Brembos, but I doubt the forks are.
I don't know what the spec for initial sag is, but I usually go with about 1/3 of total travel. I believe your bike has just over 7" of travel so it may be correct right where it is.
Only way I know of to adjust sag is to preload the spring. I don't think there is any built-in adjustment method.

pglaves · Jul 2, 2020

I agree, it is not externally adjustable. You can increase sag by reducing the length of a preload spacer if it is equipped with one. Or you can decrease sag by installing longer preload spacers.

You can reduce dive under braking by increasing the amount oil in each fork by 10 or 15cc or so.

What are you trying to accomplish?

98lee · Jul 3, 2020

We ask that you always include the YEAR and MODEL (RS, RT, LT, etc). IN THE TITLE of any thread that you start.

This is a perfect example of why. K100s went through three different styles of forks with different travel lengths. It really helps to know which ones e are talking about. Its like asking "How many cubic inches is a Corvette engine?". Ya got to be more specific! And put it in the title.

:dance

K100 Front End Setup

derailment

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jpdicarlo

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pglaves

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98lee

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