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2003 Mitsubishi Eclipse GT 3.0 Manual
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Discussion Starter · #1 ·
So I've been trying to find a decent clutch kit for my 03 GT. What's interesting is I was recommended a OEM MBK1003 From exedy. That one says it's for the GTS. The OEM Exedy is KMB02 for the GT. This is the only difference that I found between the two.

The GTS disc is 232MM vs the GT 225MM
The GTS disc hub diameter is 22.3 vs The GT's 25.4

This is where things get fuzzy.
Half of the websites show the GTS kit has a 20 tooth spline. Where the other half say the GTS kit has a 23 tooth spline.
I know for a fact the GT has a 23 tooth spline.
So the question is then what's actually correct?
I've done a lot of extensive research through the forum here and the only thing that I could possibly find was the old GT versus GTS chat that only stated once that there was no difference between the flywheel on either.


Some information would be extremely helpful here. Because if I can get a decently larger clutch disc for not too much more than what the GT OEM kit costs then I will.

Side interesting note: On a side note, ACT clutches has their clutch discs as the same part # for the GT and GTS. Hmmmmmmmmm
 

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2001 Spyder GT. Koni adjustable shocks. cold air intake, ST sway bar.17X8.5 rims. LED headlights.
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680 Posts
They obviously did an upgrade on the clutch and transmission. I doubt it has anything to do with it being GTS or GT. Most likely it is one of those things that after VIN #**** it is the new style. The change in splines tells me the trans was updated too. Check your VIN and go from there. ...J.D.
 

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None of that is correct.

The GT and GTS have the same 23 spline count. They have slightly different gear ratios but are otherwise completely interchangeable transmissions.

The difference is the GTS came with a 236mm clutch disc versus the GT 225mm disc. The only reason this is important is that the actual hub of the disc (the raised section that holds the springs) is bigger on the GTS disc and as such the GTS flywheel has a larger open hub to fit it.

In other words, the flywheel IS the difference.

All you need to know is you can't put a GTS clutch disc on a GT flywheel. If you have a GTS flywheel you can run whatever clutch on it you want, including aftermarket clutches for the Evo (single disc). All aftermarket flywheels are machined with the larger disc in mind.
 

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2005 Spyder GT
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829 Posts
None of that is correct.

The GT and GTS have the same 23 spline count. They have slightly different gear ratios but are otherwise completely interchangeable transmissions.

The difference is the GTS came with a 236mm clutch disc versus the GT 225mm disc. The only reason this is important is that the actual hub of the disc (the raised section that holds the springs) is bigger on the GTS disc and as such the GTS flywheel has a larger open hub to fit it.

In other words, the flywheel IS the difference.

All you need to know is you can't put a GTS clutch disc on a GT flywheel. If you have a GTS flywheel you can run whatever clutch on it you want, including aftermarket clutches for the Evo (single disc). All aftermarket flywheels are machined with the larger disc in mind.
That's good to know cuz I bought an Exedy mbk1003 kit (GTS) for my GT, so now I have to buy either the stock GTS flywheel or ANY aftermarket one, since I can not match the GT flywheel with the GTS clutch kit, correct?
I'm not quite ready to do the clutch, I just bought the parts ahead of time bc. I got an unbelievable deal. Now I need to find another unbelievable deal on a flywheel, I guess?
 
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