Two Wheels Better

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Number of posts : 4695
I've retrofitted the K75S 'S' front forks to my K100RS. The difference in feel (and reduced suspension travel) is amazing; they are much firmer than the typical long travel front suspension. The 'S' forks use only 280cc of fork oil and the weight I decided upon after trying all weights is 5W. I weigh less than 85kg dressed for the sunshine in a sudden downpour.
Using 10 or 15W oil can help but often it's a matter of not enough fluid in the forks in the first place. I recommend a flush and refill with the correct level spec to see how much it changes. Barring that, some Progressive springs or replacement with the OEM might make a difference.
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1970 R60/5, '77 R75/7-R100, '85 K100, '87 K75C, '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R, '04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT, 2013 R1200RT-P & 2022 S1000XR
"We take our bearings, daily, from others. To be sane is, to a great extent, to be sociable."
~John Updike.