I don't know the upper and lower cycle of the HCR system so you might need to do some math to get the correct shock length unless they will share that with you. if your shock is to long to short or wrong shaft stroke you can brake stuff or bind a CV. Its funny most manufacture will not share data. Thumper would not share any shock info we had to do all the math in house. What Shock dose HCR Offer? if there kit is for a Stock shock then the Kings we had made will not work. but you could us the stock replacement Fox QS3's its not a bad set up for the cost.could hcr arms work with this also?