Posts
165
Joined
2/20/2009
Location
Wirtz, VA
US
Curious if anyone has tested or tried a different pull rod arm on their 16'-17' Ktm/husky? I've been riding a 17' FC350 since March and I really think this bike could benefit from a lowering link. Would really like some insight from someone who is currently running or has ran a different linkage setup on these bikes before I go ahead and purchase one.
Before it was soft in the rear and squatted under acceleration, if I ran the adjusters stiff enough to stop that feeling it became deflective on acceleration. The circle continued with stiffer or softer valving and trying stiffer springs. With the link it seemed to find the happy medium with a stiffer set up that tracked well under heavy acceleration.
https://www.procircuit.com/ktm-husqvarna-linkage-system-16.html
https://www.rockymountainatvmc.com/p/3585/64211/Pro-Circuit-Linkage-Sys…
The Shop
It does make it feel totally different and doesn't lower rear that much. I don't see any reason to use just longer link but
PC set made it better. Rear was kicking both on gas and braking with stock setup. Anyhow I did run little with 17 model and stock was better than old stock setting so i didn't bolt PC linkage yet on before hurt myself.
I tried to get some clarity from PC about what the percentage of rising rate increase over stock was but even talking with Bones my question was not really answered to my satisfaction. I do find the linkage does add quite a bit more progressiveness and fluidity throughout the stroke and much more forgiving when it comes to a valving difference (even a not so good valve job still feels decent).
All around I'm extremely impressed. The bike settles better all around but the steering feels a little heavier than before....
That said, wouldn't want the back end any lower for me.
Pit Row
With this system of determining spring rate you can almost tell by just playing with the shock adjuster while the bike is on the stand. if you like a relatively stiff spring you should shoot for the lower end of preload, like 2-3mm. After setting race sag the correct spring will almost feel loose on the shock as 2-3mm preload isn't much!
If you like a slightly softer feel you'll shoot for a spring rate after race sag that'll be at the higher end, 8-10mm. However, even at this preload it doesn't take many spins of the adjuster to get the spring to rattle. You can roughy determine the number of threads per mm of your shock body and then count the full turns of the adjuster as well.
The final unload sag numbers can vary tremendously, 50-80mm are not unusual but are meaningless in this process.
Ran it stock for the first two rides, then put the PC linkage setup on it. Didnt go up in spring rate yet because the OEM spring was already too stiff for me. But as mentioned earlier, PC strongly recommends a stiffer spring.
OEM spring rate is a 4.2 right?
My weight calls for a 3.9
But with this link setup Im under the impression 2 sizes up is a 4.5?
PC told me to run a 4.9
Im not one to argue with them as they are the experts but I couldnt imagine running a 4.9 as Im already pretty comfortable with where things sit right now.
I'll be a pretty happy guy the day they eventually release a air shock as good as the WP air forks.
Stock sx350f was soft side to me so I went with 50N spring from my 450 setup on my new 350f. Its on stiff side
to me but working nice. Im at 78-80kg 175 pounds.
Post a reply to: 16'-17' Ktm/husky linkage setup