Factory shocks are going to have a lower load rating (usually) than after market shocks. The big difference between a budget boost and a coil lift comes into play when you start adding after market accessory (winch, bumper, rock rails, etc). All of these things weight down your Jeep. Good, after market springs, are designed to handle this extra load without sagging. Your factory springs, however, are not.
Additionally, a budget boost is a polyurethane puck, and will give you EXACTLY what it advertises. So, if it says that it's a 2.5" lift, then you will get EXACTLY 2.5" of lift. However, if you are looking at a 2.5" coil lift (depending on brand) you can gets upwards of 3" of lift sometimes.
Now, when those factory springs start to sag on your budget boost, you will have even less of a lift than the advertised whereas a coil lift will be unlikely to sag less than it was advertised at.
I hope I made sense of that... in short, springs are better.
As far as shock adapters versus replacement shocks... that depends on what type of shocks you have right now. In general, if you are only looking at a 2" to 2.5" lift, and have a Rubicon with relatively low miles, then you factory shocks are fine for the time being and shock adapters will work just fine.
However, if not all of those things are true, then new shocks of an appropriate length for your lift is advisable.
Black 2008 Wrangler Unlimited - X
6 Speed Std. |
Soft Top |
5.13 Yukon Gears |
Front Aussie Locker |
Front Chromoly Axle Shaft |
Rough Country 3.25" Lift |
315/75R16 (35x12.5) GY DuraTracs |
16x8 Pro-Comp Series 97 Rims |
OR-Fab Stinger & Tire Carrier |
XRC-10 Comp |
TF Sleeves & Gussets |
Rubi Rails |
AEV ProCal |
Crown Brake Lines |
JKS Adjustable Front Track Bar |
ARB Air Compressor