now every racer is different...but just something to think about usuing that spring. Its a progressive spring. menaing as it is compressed its spring rate increases ie it gets stiffer. this might seem like a good thing..but I find it to be somewhat impractical and unpradictable at extremes. I like a more linear spring..it is more consistant..speacially in the rear. Hopefully you are picking up what I am putting down. If you need me to explain further...just let me know :wink: