1. Rumor has it KYB shock springs will fit on Sachs shock body. Can anyone confirm/deny that claim? I don't have access to one to compare side by side. Looking to go from stock 5.4 to a 5.6. 2. Also wondered if it would be necessary to revalve the Shock in going to a 5.6 from said 5.4, or if the difference was marginal enough it wouldn't make that much difference. Thanks!
One word of caution. The 2 stroke (at least the pre 09 models) have a slightly shorter shock. I tried a ti oem Yamaha spring and had to go to a tire store to use a strut compressor to get the spring on. It was about 1/4" too long to go on and off.
THREAD REVIVAL! I just bought a 5.5 Ti spring from a 2007 YZ450 for my 2012 husky - can anyone confirm that you need to pre-compress the spring to install it on the 2012 Husky Sach's shock? The guy above mentioned that he had to do this on the pre-09 models.
I have a Ti KYB spring on mine and have used a number of KYB spring without issue, as long as they aren't progressively wound. Progressively wound springs are typically smaller on one end and won't work with the stock spring seat.
You will just have to try it and see if you can get the spring started. I had a Yamaha spring on one of my Huskies that was longer but I was able to use it. A word of caution on the Ti springs, my 2010 X-light motor would rub the larger ti spring I had right on the back side of the motor. Titanium will not put up with this and will crack. So just check your bike on the stand and make sure there is no place for it to rub the motor. Otherwise have fun! Valving should be fine going from a spring rates, worst case you may have to move a few clicks on your settings but I would doubt you notice it.
Not really as the spring does not move much and when compressing moves away from the boot. But I did not like it and replaced it with the right spring.