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C50_jessy1_1471467436 CarlinoJoeVideo Quote
10/1/2017 3:17 PM

Hey guys, so today I took off my cone valves and put my 4CS on my 2016 KTM125 for an off-road trip. I noticed the upper tubes are shorter than the cone valves.

For example I run my cone valves at 2 lines up in the clamps.I run 105mm sag. The 4CS will need to be flush in order to get the same balence.

What height do you guys run on your forks and sag? Thanks!

C50_v8_1481571558 LumpDog841 Quote
10/1/2017 3:23 PM

Running mine on the second line for the CV forks, same as I ran with the AER. For sag I'm running around ~107 mm, though it's been two weeks since I checked it.

C50_jessy1_1471467436 CarlinoJoeVideo Quote
10/1/2017 5:26 PM
CarlinoJoeVideo wrote:

Hey guys, so today I took ...more

LumpDog841 wrote:

Running mine on the second ...more

Cool, have you ever compaired the upper tube Length between the 2?

C50_v8_1481571558 LumpDog841 Quote
10/1/2017 7:05 PM
CarlinoJoeVideo wrote:

Cool, have you ever ...more

I honestly haven't. Though they appear to be exactly the same, but I don't have actual numbers to back that up. One weird thing though is the CV forks seem to fit better in the xtrig clamps...maybe better dimensional tolerance?

C50_red_bud_1452364938 Giygas Quote
10/3/2017 7:50 AM

I got my 4CS forks revalved by Craig at Enzo. He told me to run the black part on top of the forks even with the triple clamp. The fork was moved down slightly from the stock position.

C50_byron2_1496938970 MotoMatt_928 Quote
10/3/2017 10:22 AM

I ran my 4CS flush at the top, but my AER48 I run at the 3rd line. Sag at 105mm.

C50_jessy1_1471467436 CarlinoJoeVideo Quote
10/3/2017 3:20 PM

Very interesting! I wonder if the 4CS are shorter than the AER.

Thanks for the info guys.

C50_arlanda_283_1426354092 Lynch Quote
10/3/2017 9:15 PM
CarlinoJoeVideo wrote:

Very interesting! I wonder ...more

I will check when I get home after work.

C50 FRANZINI499 Quote
10/3/2017 9:57 PM
CarlinoJoeVideo wrote:

Very interesting! I wonder ...more

Yeah the AER forks are usually about 10-12mm longer than the 4CS!! Its kind of interesting that they would have such drastically different fork lengths, but not change the chassis to supplement... It makes you wonder if the chassis was originally developed to accept the shorter fork, and realized that they needed the extra length to work out some bugs? Or if they designed it for the longer fork, but wasn't ready to release the AER fork to the rest of the world? Questions that someone higher up on the KTM food chain would have to answer I'm guessing...

I think I saw an MXA article a while back supporting this, I'll go through the archives to see if I can find anything!

C50 FRANZINI499 Quote
10/3/2017 10:14 PM

Found it!! April 2016 Issue of Motocross Action!



C50_jessy1_1471467436 CarlinoJoeVideo Quote
10/4/2017 6:17 AM

Yeah 1/2 inch is a big difference.

C50 FRANZINI499 Quote
10/4/2017 9:56 PM
CarlinoJoeVideo wrote:

Yeah 1/2 inch is a big ...more

Huge difference!!

C50_11111166_1604018196548831_2446724603716701395_o_1433855518 Digger29 Quote
10/5/2017 7:45 AM

I ran my cone valves on the 3rd line on 15.5 FE450 because of the length difference between the 4CS and the cone valve forks. I ran my cone valves on my 16 & 17 on the 2nd line because the cone valves are very close to the same length as the AER fork. I actually tried the AER cone valves on the 3rd line this weekend and went from 105mm of sag to 108 and the bike worked really well on a very fast and very choppy track. It settled better in the turns and tracked very good in the rutted turns and was super stable at speed.

C50_jessy1_1471467436 CarlinoJoeVideo Quote
10/5/2017 8:23 AM
Digger29 wrote:

I ran my cone valves on ...more

Cool, do you like steering with the front or rear of your bike? I'm going to try some different sag numbers tomorrow.

C50_11111166_1604018196548831_2446724603716701395_o_1433855518 Digger29 Quote
10/7/2017 6:22 AM
Digger29 wrote:

I ran my cone valves on ...more

CarlinoJoeVideo wrote:

Cool, do you like steering ...more

I like to steer with the front end but definitely use both ends depending on the track and the situation, why?

C50_jessy1_1471467436 CarlinoJoeVideo Quote
10/7/2017 7:59 AM
Digger29 wrote:

I ran my cone valves on ...more

CarlinoJoeVideo wrote:

Cool, do you like steering ...more

Digger29 wrote:

I like to steer with the ...more

Just wondering for bike set up and style of riding. I'm all front end, I like it to track hard and turn like front wheel drive.

I ran 105-107 yesterday with forks at 2 lines. I think that's the money spot. Went back to my base suspension setting and I did some tweaking on my clickers, she is set up really good right now. I'll take this setting to a few more tracks and see how it holds up.

C50_11111166_1604018196548831_2446724603716701395_o_1433855518 Digger29 Quote
10/7/2017 8:35 AM

I've been running 104-105 on all 3 of my 450s and when Powerband came to the Racer X event in Maine a few wks ago he set mine from 105 to 108 and that's where it's been for the last 3 weekends. He was very surprised at just how rough the track was. I've been telling Billy for 3 yrs that our tracks get very rough here in New England. He came over to my RV at the end of the Fridays practice and told me to pull my stuff and he going to revalve it based on what he's seeing track conditions wise. I'm very pleased with the revalve and that he finally believes me :-) I'm going to leave the forks on the 3rd line for tomorrow at NHMX.

C50_jessy1_1471467436 CarlinoJoeVideo Quote
10/7/2017 4:15 PM
Digger29 wrote:

I've been running 104-105 ...more

I could see 108sag and 3 lines up being similar feel to 105-106sag and 2 lines up but the ride feeling taller off the ground. What do you think?

What spring rate and how much preload do you guys run?
I'm 160lbs, 4.7 spring with 2 clicks of preload.

C50_mx1_1507480016 Vadim Quote
10/7/2017 6:49 PM

I ran my CV on the 3rd line on 16.5 250 SXF FE, and 108 sag.
I'm 180lbs, 4.8 spring, 1 click of preload, setup by powerband.
I tried 4th line, it is good for corner, but a little unstable on high speed.

Excuse my english - it's my second language!

C50_file_mar_02_3_23_20_pm_1488487194 slothy Quote
10/9/2017 7:54 AM

whats considered a drastic change in sliding the forks up? 1 line? 5 lines?

C50_jessy1_1471467436 CarlinoJoeVideo Quote
10/9/2017 10:35 PM
slothy wrote:

whats considered a drastic ...more

I think if you go 2 lines in either direction from where you are it's big.

Just saw this photo of marven- looks like he's 3 lines up.

C50_jessy1_1471467436 CarlinoJoeVideo Quote
10/9/2017 10:36 PM


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