powerstroke bypass shock

[squeeforever]

its a weird design but ill try and explain it. ok, well there is the inner chamber like a regular shock but then there is a outer chamber inbetween the heatsink body (outer wall) and then the inner chamber. the inner and outer are filled completely with fluid and there is holes in the inner wall to allow the fluid to enter and exit the outer chamber. now as the piston goes up it passes the holes and as it goes up there are less holes to make it pregressive. so 60 weight oil is way to much. try like 40 and 50 in the shocks if you have a really heavy truck but for a stock weight truck 30 in the shocks and 40 in the bypass should be close. it just depends on how you like your truck to sit and handle. if you have any doubt on how it works just go to prolines website and find the powerstroke shocks. it has a thing that explains it and has a cutaway that shows how it works.