Diff and subframe risers?
 

I've been searching like hell for the last few days trying to wrap my head around these options.

My situation:
- 2013 frs on eibach sport line springs. My axle (98% sure that's what it is) has been clicking for some time now. Knowing it's going to go bad soon I started reviewing my options

1. Replace with factory axle and hope for the best
2. Replace with drive shaft shop axles and hope for the best
3. Raise the rear diff and subframe to compensate for the lowered suspension

Of these options I would think number 3. Is the most legitimate option and best long term fix. Assuming a lot of other people share this opinion I will go that route, but I have a few questions for people who have already done this.

1st, I understand there will be some welding involved, touge factory in Illinois agreed to attempt the install (they have never done it before). However I would like to know what they're going to be up against. I have seen that one person notched the rear subframe, I'm sure this was to clear his drive shaft shop axles, and this will not be required for my factory axle vehicle? Correct? I've also seen that someone has notched the subframe for "extremely lowered vehicles" also not required for my lowering spring equipped vehicle, correct?

Hopefully someone has these parts installed and can chime in.

You might have better luck finding answers in "The Drifting Thread" under the tracking subforum, I know some people there use these (from parts shop max i believe)

I will check that out. Thanks!

You forgot option #4, try springs that don't lower the car so much. Probably cheaper than your other options as well.

I don't feel my drop is exsessive enough to justify different springs. Is not that much lower than my wife's factory spring frs. Not to mention I like the stance of my car and raising it isn't an option for me. I'll either try to make it as correct as possible or replace the axles once a year due to premature failure. In all honesty I'm surprised they have held up this long with my trips to the strip.

Those springs don't really lower the car as much as those other guys running slammed setups on coilovers. Your suspension geometry really isn't that off and this probably is a bit overkill. I don't mean to assume much, but have to ask - have you tried just either re-torque or replace the axle nut?

I retorqued it with no luck. I did not replace the axle nut although I would have had it worked. I originally thought it was going bad because of abuse but it doesn't seem that common with stock ride height guys,, even with the guys that are boosted. Maybe I'll just replace the axle and see how long it holds up. i am not easy on my car and it was very much bought for a purpose. I'd also like DSS axles in my future and don't want to have to notch the subframe to run them.

If you track the car or have it lowered a lot. The risers are nice the DSS axles are nice as well for high horse power and or lowered. if you don't track the car or are not lowered significantly get a stock replacement axle. there is a sub-frame riser bushing thread I responded to as well earlier that will have more info.