2018 KYB shim stacks
- Thread starter Gibnut
- Start date
Gasser Nate
New member
Hahaha you?ve been told Gibson! I expect a report by mid morning!
memphis2857
New member
You find the compression needs to be softened up? I’m running 2 clicks in from full soft and it still deflects on low speed rocks really bad
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Jacob 'Berg
Member
How about spring rates? I am running .44 spring rate in the KYB's on my 2011 250. When I do an oil change on the 2018 forks I am going to swap one of the .42 springs for a .46. .42 stock seems like a pretty light spring rate unless you are a very light or slow rider. Just my 2 cents.
I personally do not want to start re-valving until I have the spring rates correct and then I will work with the compression and rebound adjustments. My initial impression is that the stock valving is very close for my conditions, which vary from fast rocky to slow technical rocky (Arizona).
I personally do not want to start re-valving until I have the spring rates correct and then I will work with the compression and rebound adjustments. My initial impression is that the stock valving is very close for my conditions, which vary from fast rocky to slow technical rocky (Arizona).
Jacob 'Berg
Member
I am also interested to see what the oil volume is in the outer chamber. I am running 300cc in my 2011 and that seems to help with plushness on the lower speed stuff...
swazi_matt
Active member
anyone know if the GG kyb's are the same as the yz kyb's in relation to caliper mounts, axle sizes etc?
(basically asking if you could just swop a yz front end into the 18GG?)
(basically asking if you could just swop a yz front end into the 18GG?)
Anders
Gold Level Site Supporter
For what it's worth; I have been told that a 17 GG fork (hence almost any 48mm GG fork) will fit the 2018 triples and vice versa. But I have no real knowledge in the matter, I haven't tried, not even measured.
But in a week or two, I will have my mate's 2018 in my workshop for tire change, I presume. Then I could take some measurements and compare them to my 2015. If that is of any interest.
memphis2857
New member
Won’t work. The lugs are different on the bottom.
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twowheels
New member
You might want to try increasing the rebound damping to combat the deflection.
Jakobi
Super Moderator
I'll take a guess if you like..
Around .35-37mm float on the mid. Pretty standard setup with 3 or 4 face shims on both sides of the piston (comp and rebound).. See just about any stock KYB mid setup..
A big handful of face shims on the base valve, and the real question determining how firm the stack is will be... What is it clamped on? I'd be thinking somewhere around 10mm clamp.
Don't under estimate the rate on the inner cart spring. Makes a pretty significant difference to feel.
Jacob 'Berg
Member
Jakobi,
Any way to determine the spring rate on the inner cartridge spring when I open these up? Where and how will a lighter ICS affect the fork action?
Jakobi
Super Moderator
Good question regarding knowing the rate. I'm not sure if they are stamped or if you'd have to get them to a tuner to be tested.
Lots of reading on the overall effect the pressure has on the fork. Long story short, its a pressure acting on one side of the free piston to increase cartridge pressure to reduce cavitation. More pressure is more resistance, which tends to mean firmer feeling.. although it's only one variable in the setup as a whole.
Lots of reading on the overall effect the pressure has on the fork. Long story short, its a pressure acting on one side of the free piston to increase cartridge pressure to reduce cavitation. More pressure is more resistance, which tends to mean firmer feeling.. although it's only one variable in the setup as a whole.
Gasser Nate
New member
I knew that was why you were asking Gibbo! Jpg can?t help himself trying to turn a beta into a gassy! 
Preload on the ics spring/less free play makes a big difference too. I have the free pistons out of the Tm in mine and they are noticeably stiffer than Ruffley?s demo. With only about three mm less play too.
Preload on the ics spring/less free play makes a big difference too. I have the free pistons out of the Tm in mine and they are noticeably stiffer than Ruffley?s demo. With only about three mm less play too.
Jacob 'Berg
Member
I would say that it is extremely unlikely given that the chassis, mounts, and linkage have all been redesigned.
memphis2857
New member
You would throw rocks at that TTX shock after riding the stock KYB. It’s that good
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