I’m going to get a set of Kawasaki ZZ-R1100D forks reconditioned and was thinking of putting progressive springs in while they are apart. Is this a worthwhile exercise or are the standard springs already decent enough? They are for a front end upgrade on a GPZ900R.
Graham Bennet, PS Facebook Group
Darren Wnukoski says: A
linear spring would be better, because a progressive spring is designed as a best average for everyone and usually ends up being brilliant for no one. You’d be better fitting the right spring for you. These forks have a fairly short stroke and I reckon an 8.5 to 9kg/mm spring with the correct weight of oil and air-gap would probably be about right for you depending on what you weigh and how you ride. Talk to a suspension specialist so you buy the right stuff first time.