[Romer]

So as stated previously, the first step is to select which spring set you are going to use.

For example, A stock rig with 33" or smaller Tires would be perfect for the OME Medium 2.5" lift Kit

This would consist of the:

2 x OME 851 Front Coil Springs
2 x OME 860 Rear Coil Springs
2 x N73 Nitrocharger Shocks
2 x N74E Nitrocharger Shocks
1 x SD24 Steering Damper
1 x CA77B Caster Kit
1 x Caster Bushing Press Piece

This lift would be fine even when Armor is attached. However, the armor, bumpers and winches will weigh this down and your 2.5" lift could turn into a 1.5" lift.

So, say you have an ARB Front Bumper, Winch, Sliders and Rear Bumper Tire carrier and want the 2.5" lift. Many in this application would select the OME Heavy Kit

This would consist of:
2 x OME 850 Front Coil Springs
2 x OME 863 Rear Coil Springs
2 x N73 Nitrocharger Shocks
2 x N74E Nitrocharger Shocks
1 x SD24 Steering Damper
1 x CA77B Caster Kit
1 x Caster Bushing Press Piece

Note, the springs are the only difference between the two kits. From Table 2 above we can see that the Heavy Spring is .8" taller allow for an extra 150 lbs load (see table 1) to get to the same height.

From the Slee Off Road Web Site on the Heavy Kit:
This is the kit that we install for trucks that have a replacement front bumper, winch and rear bumper installed. The spring rates can support 110-250lb additional up front weight and 440lb additional weight in the rear. With the additional weight, the total list will be between 2" and 2.5". If extra carrying capacity is required in the rear, the springs can be replaced with Extra Heavy rear springs that can accommodate up to 880 lb additional weight.
The steering damper assist with kick-back in off-road situations, especially with running over-size tires. The caster kit returns the truck's steering geometry to stock.
It should be noted that if the Heavy Load suspension is used in an application where there are no additional weight on the truck, it could lead to a harsh ride as well as vibrations and handling anomalies.