Fork springs set Wirth for BMW K75S/RT up to 1991 and K 100 up to 1990 (Sachs fork).

Progressive fork springs set with ABE and mounting instructions. Please order fork oil as well. 
Proven for decades - improved handling and road feel!
No more strikethrough, less brake dipping, no sponginess!
Air support of the fork is no longer needed, so the oil seals do not blow through anymore and the response speed improves considerably!
Ideal replacement for sagging original springs.
Tested and recommended by leading motorcycle magazines.
Simple self-installation with detailed instructions.