Below is a list of the things that can interchange, update from one sled to another.
you can install long travel shocks from any pro action sled rear suspension into any other pro action sled, long or short travel as long as you use the longer limiter straps, longer transfer rods.
The above does not apply to the worrior/rage skid, they use longer side arms and longer rear shock. they can be used to up grade any other 136 pro action but they will need the side arms as well as the shocks. Front shock is the same as all other long travel front suspension shocks.
Transfer rods are all the same length on all pro actions. The difference is in the spacers. Spacers are what change where the coupling occurs in the suspension travel.
The above does not apply to 2000-2002 srx sleds, they came with shorter rods that bolt in a hole infront of the long rod hole. If you long travel this skid, you need to change these rods. Extensions can be made for the short rods but the long rods are so cheap used it is not worth the bother.
You can and should run polaris syle, 5 3/8 idler wheels on your skid. To do this you need to change out the plastic spacers inside. Your sled will roll easer and front slide wear will be reduced.
If you have a Rx1/vmax xt/venture/rage/worrior, your sleds shocks and side arms do not have bearings in them. For the rage and worrior,buy the arms from below and remove the bearings and seals. You will need to ream out the side arm ends about 1mm to accept the bearings and seals. For all others you can just buy a used set from a viper/sx/srx/xtc and install them.
The shocks from these sleds also should have bearings or at least have new bushings installed every year and greased. In all pro action sleds the center shock does not have bearings. Below are part numbers to install bearings in your center shock.
1 8CR-47465-00-00 upper W arm SHAFT
2 90381-19111-00 upper W arm BUSH,SOLID
2 90387-1009T-00 lower W arm COLLAR
4 90381-15112-00 lower W arm BUSH,SOLID
2 93315-21454-00 shock BEARING,CYLINDRICA
4 93109-14021-00 shock OIL SEAL,SDO-TYPE
4 90202-14226-00 shock WASHER,PLATE
2 90387-1007N-00 shock COLLAR
Front suspension
Yamaha has made 3 front cast sections. This is the part that all supension components bolt. They all can be rivoted into the frame.
vmax and viper are similar in how they use clevis style shock mounts up high in the belly pan
Viper and SRX are similar in how they bolt the rh motor mount
Srx and sx are similar in the length of front shock used
Sx sleds use a vmax cast section with brackets to use the shorter shocks.
Srx cast sections can only use short travel shock unless a custom brackets are made.
Sx and srx cast secions share the same radius rod hole spacing
Viper cast sections use their own radius rod hole spacing that is wider.
Trailing arms are many different colors but the difference physicly is this.
Viper/Venture/Vmax using low mount skis have a longer spindle housing to make up for the lower mount hole in ski. They are about 1in longer, or taller depending how you look at it.
Vmax/Venture/Sxr trailing arms that use the steel skis or the usi style high mount plastic ski have the shorter spindle housing but have similar caster angle to the above trailing arms for long travel front ends.
Srx/Sx short travel trailing arms use the same short spindle housing as the above trailing arms but have a few less degrees of caster made into them.
Spindles
All short spindle housing trailing arms have the same spindle
All long spindle housing trailing arms with aluminum steering arms use the same spindle
All long spindle housing trailing arms with steel steering arms use the same spindles.
All long spindles that use the aluminum steering arms will interchange with rx1 spindles.
thats all for now