originally the fork had two springs, both were 45 in/lbs. (medium)Pretty cool except I am not sure how one spring would be enough?
the fork came with an extra 55 in/lbs spring as well (firm)
the newer 32mm boxxers use a single sided spring unit, and you guessed it, the medium weight spring has a rate of 55 in/lbs.
i weigh 180 with gear. it worked out perfectly.