CraigBWRX

I have a 2005 WRX300 with the common shock knock.

I have some new OE rear shock absorbers ready to fit but the current shocks have a larger piston diameter than the new boge shock absorbers.

I am trying to get numbers off the old shocks with little success.

The only thing i can think of is that there is possibly a difference between the shock absorbers on the WRX300 and a standard WRX.

Any help would be helpful

Craig

daz1968

iTrader: (13)

I can’t comment on wrx, but when I changed them on my sti there is only really two types of strut, inverted and standard, the fronts are different on widetrack with 114.3 pcd though

Don Clark

The WRX300 brochure lists a suspension upgrade as a "Special Edition Accessory" available at extra cost

http://www.subaru-impreza.org/downlo...eza-wrx300.pdf

2pot

iTrader: (3)

The later newage wrx had inverted struts (not the same inverted struts as the sti) - 39mm damper rod.

These are wrx inverted rear struts:
Rear right
20361FE340
20361FE341
20361FE342
20361FE3429L

Rear left
20361FE350
20361FE351 GENUINE SUBARU SUSPENSION SHOCK ABSORBER WRX 2000-2007 20361FE351 | eBay
20361FE352
20361FE3529L

CraigBWRX

You are a star. those numbers have crossed and i have some KYB's coming. 39mm is the correct diameter

Fingers crossed they are correct!

2pot

iTrader: (3)

KYB don't make alternative, inverted, rear struts for the WRX. Other than those they make for Subaru, listed above.
They make replacement Ultra SR, inverted, rear struts for the STI:
kyb 321004:
20360FE900
20360FE901
20360FE902
20360FE9029L

kyb 321005:
20360FE910
20360FE911
20360FE912
20360FE9129L