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Making a new thread for KYB SSS fans:
After I revalved the fork to the specifications that Alta had developed I am now very happy with the original revalved fork. But if you want to try a KYB SSS setup on your Alta, then there are a couple of ways of doing it:
Method 1:
Buy a KYB SSS cartridge kit for a 2014 KTM. Several companies offer such kits. They replace all the WP fork's internals with the KYB internals. I do not know all about such kits, but in case of one tuner that I know you have to send the fork to him and he does some modifications to the bottom ends of the fork legs. I do not know enough of what's involved though, so do your own research.
Method 2:
I happened to have a 2015 YZ450F with KYB SSS in my garage at that time. I first tried the KYB SSS forks on my 2015 Husky, and I loved them so much that I went on eBay and bought the whole YZ450F front end, including the wheel, axle, two forks, and the front brake with the master cylinder. After I sold these two bikes I still had a spare YZ450F front end laying around:
The 4CS legs are slightly thicker near the bottom clamps. I had to use aluminum 0.015" thick shim stock from McMaster.com to get the KYB legs to clamp properly.
Also, the Alta's triple clamps spread the fork legs 14mm farther apart, presumably for the wider SM wheel.
Initially, I just used the stock YZ front axle with about 6mm worth of spacers/washers from a hardware store in the left side. It still clamped on the right side, and I used Loctite on the left side to keep the nut from getting lost. It was hanging just by 3 threads. I also had to use longer brake caliper bolts and 6mm worth of washers/spacers to move the brake caliper towards the wheel.
This setup worked for me for a few weeks, until I finally got around to revalve the stock fork.
While at it, I bought another YZ front axle and the right side spacer. I took them to a machine shop to have the axle lengthened and the left spacer counter-bored. Counter-boring the spacer allowed the axle to move farther to the left.
Here are the sketches with dimensions:
As I said, I haven't used this setup yet. But if I decide that my fork needs another revalve, I now have an option to revalve either the stock 4CS fork or the KYB SSS fork, and test them back-to-back at the track.
After I revalved the fork to the specifications that Alta had developed I am now very happy with the original revalved fork. But if you want to try a KYB SSS setup on your Alta, then there are a couple of ways of doing it:
Method 1:
Buy a KYB SSS cartridge kit for a 2014 KTM. Several companies offer such kits. They replace all the WP fork's internals with the KYB internals. I do not know all about such kits, but in case of one tuner that I know you have to send the fork to him and he does some modifications to the bottom ends of the fork legs. I do not know enough of what's involved though, so do your own research.
Method 2:
I happened to have a 2015 YZ450F with KYB SSS in my garage at that time. I first tried the KYB SSS forks on my 2015 Husky, and I loved them so much that I went on eBay and bought the whole YZ450F front end, including the wheel, axle, two forks, and the front brake with the master cylinder. After I sold these two bikes I still had a spare YZ450F front end laying around:
The 4CS legs are slightly thicker near the bottom clamps. I had to use aluminum 0.015" thick shim stock from McMaster.com to get the KYB legs to clamp properly.
Also, the Alta's triple clamps spread the fork legs 14mm farther apart, presumably for the wider SM wheel.
Initially, I just used the stock YZ front axle with about 6mm worth of spacers/washers from a hardware store in the left side. It still clamped on the right side, and I used Loctite on the left side to keep the nut from getting lost. It was hanging just by 3 threads. I also had to use longer brake caliper bolts and 6mm worth of washers/spacers to move the brake caliper towards the wheel.
This setup worked for me for a few weeks, until I finally got around to revalve the stock fork.
While at it, I bought another YZ front axle and the right side spacer. I took them to a machine shop to have the axle lengthened and the left spacer counter-bored. Counter-boring the spacer allowed the axle to move farther to the left.
Here are the sketches with dimensions:
As I said, I haven't used this setup yet. But if I decide that my fork needs another revalve, I now have an option to revalve either the stock 4CS fork or the KYB SSS fork, and test them back-to-back at the track.
