• start here
  • logo jeep_jk
  • logo jeep_tj_lj
  • logo jeep_cj_yj
  • logo jeep_xj_zj

AEV LJ Springs - 3 inch - Rear - LWB

Be the first to review this product


Quick Overview


AEV Nth Frequency Tuned TJ Rear Springs 3 inch LWB (Nth21022AA)

More Views

  • AEV Nth Frequency Tuned TJ Rear Springs 3 inch LWB (Nth21022AA)


A spring is just a spring right? WRONG. The factory used up to seven different front springs and eight different rear springs on TJs. Why so many? It's not just so that the height of every TJ from a stripped 4-cylinder soft-top to a loaded Rubicon Unlimited dual-top is the same. More importantly, it's so that they all ride and handle the same...in short, so that they have the same frequencies. No other aspect of your rig's suspension has as much direct affect on ride - and especially handling - as these frequencies. Nth Degree springs are designed the same way, even including the special benefit of a progressive-rate design: the more you load it, the stiffer it gets ñ keeping the frequency nearly constant. Because the relationship of the front springs to the rear is also critical to great ride and safe handling, Nth Degree springs are tuned and intended to be used together as matched F/R sets - we do not recommend they be combined with other makers' springs. As part of an Nth Degree suspension system or to replace your existing 'lift' springs, these will perform beautifully whether loaded or empty, both on-road and off.

Additional Information

Product Number AEVNth21022AA
Fits LJ 2004 - 2006

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.

Customer Service


WA 360-340-0282
CO 720-213-0114

Toll Free:




Customer Service Hours:
Monday - Friday 
9:00am - 6:00pm PST

Store Addresses: 
Northridge 4X4 - Washington
7976 Rubicon Trail Pl. NW
Silverdale, WA 98383 

Northridge4x4 - Colorado
4107 S Valley Dr
Longmont, CO 80504 

We accept the following methods of payment:

creditcardsPayPal mark 37x23




Free Shipping On All Orders Over $70, US Lower 48 States.
Only $9.99 on all items under $70


Support after the Sale
When you purchase from us you can be assured that we will be there when you need us. We pride ourselves on our friendly tech support and eagerness to help you out. So give us a call.


We Install What We Sell!
Northridge 4x4 is a full service off-road shop with a specialty in Jeeps. From installing fender flares to building the most extreme rockcrawler you can imagine, we do it all.

Gift Cards

Make Shopping Easy With A Northridge 4x4 Gift Card
Redeem online or at our retail store. Available in any amount from $10 to $1,000.
Buy Now Gift Card