Our Trailing Arms are made from 4130 tubing and Strenx plate, and give over an inch of extra tire clearance. They're sold as a left and right pair with hardware. You can order them in stock length or in our Extended Length (+2"), and add our Rally or Track mounts with them.
Which one do I need?
Length
| You want | Extended Length Arms option |
|---|---|
| A direct replacement for the stock arms | No (stock length) |
| Better rear geometry without going to our XXXL arms or a T-Bar | Yes (+2") |
Mounts
| Your setup | Replacement Mounts option |
|---|---|
| Our T-Bar or Geometry Special | None. Your T-Bar already includes trailing arm mounts. |
| Stock height, and you want stronger mounts or are ordering +2" arms | Track, for more ground clearance. Choose Rally if you might lift the car later. |
| Lifted | Rally |
| Stock-length arms on the factory mounts | None needed |
The +2" arms need our Rally or Track mounts, or the mounts that come with our T-Bars. They don't fit the factory mounts.
Options
Extended Length Arms
The +2" arms are 2" longer than stock. A longer arm moves the wheel less forward and back as the suspension travels. Across 7" of travel, the wheel moves 1.12" with our +2" arms against 1.24" with stock arms, 10% less.
They are a middle step between stock and our XXXL Trailing Arms, which are 9" longer and cut the movement to 0.91". They suit cars that won't run a T-Bar. See the XXXL Trailing Arms guide for the full comparison.
Replacement Mounts
The same mounts we sell as Trailing Arm Mounts, added to this order.
- Rally: four holes, for stock and +2" arms at stock height and lifted.
- Track: two holes, for stock and +2" arms at stock height. It sits higher than Rally, so it gives more ground clearance.
See the Trailing Arm Mounts guide for the exact hole positions.
Powder coat
Powder coating adds about 2-6 weeks. See Powder Coating.
What it works with
Works with
- The factory trailing arm mounts (stock-length arms only)
- Our Trailing Arm Mounts, Rally or Track
- The trailing arm mounts that come with our T-Bar and Geometry Special
Don't order together
- The Replacement Mounts option with our T-Bar or Geometry Special. The T-Bar already includes the mounts.
Fitment
A rear part for the GC/GD group:
- Impreza / WRX / STI 1993-2007 (GC, GF, GM, GD, GG)
- Legacy 1990-1999 (BC, BF, BJ, BD, BG, BK)
- Outback 1995-1999 (BD, BG, BK)
- Forester 1998-2008 (SF, SG)
The 2000-2004 Legacy and Outback (BE, BH) are not included, because only our GC/GD front parts fit them.
Common questions
Is it one arm or a pair?
A left and right pair, with hardware.
Can I order stock-length arms now and go +2" later?
Yes, if you have our Rally or Track mounts. Both have a hole for each length.
Do I need mounts with the +2" arms?
Yes. Add Rally or Track, unless you have our T-Bar or Geometry Special, whose mounts already fit them.
I'm buying your T-Bar too. Do I need the mounts option?
No. Every TSSFAB T-Bar, including the one in the Geometry Special, comes with trailing arm mounts.
Should I get these or the XXXL arms?
The XXXL arms give the most geometry improvement. The +2" arms are the middle step, especially if you won't run a T-Bar.