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Old 02-14-2011, 11:27 PM   #1
Scooby Newbie
Member Sales Rating: (4)
Member#: 264641
Join Date: Nov 2010
Chapter/Region: MAIC
Location: St Leonard, MD
2005 WRX STI

Default Clutch Comparison

Made the mistake of posting this in the wrong forum earlier and got chewed on so I figured i'd try again.....

Just looking for opinions from those with experience with either of these clutches as my initial clutch upgrade is starting to slip slightly:
ACT SB4-XTSS (566 lb torque rating)
RPS MS-20STI-ST (up to 600 lb torque)

I was recently tuned at IAG (Jorge) at 370whp/400wtq and am planning TGE deletes and EWG in another month so i'm figuring another 20/20 over where i'm at now. I've got ~90K miles now and am planning on forged pistons and new cams at 100K miles (along with all the other 100K mile parts replacements!) but that won't be until late fall timeframe. Once these mods are completed I believe i'll be in the neighborhood of 425whp/450wtq. I think i've identified the correct torque ratings based on the data in the FAQs, but i'm looking for some additional feedback from the user community based on driveability, durability, etc. Just want to make sure I put the right clutch in now for planned future mods. Thanks for any help!
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