clutch kit preference-quality

[tarmac2dirt]

Will be building a new engine soon (4.0) for my 88 MJ. At the same time I'm going to replace the clutch. What are you guys using as a good upgrade clutch for an engine with very minor mods. LUK--Precision--MPAC--ECT. so many to pick from off rockauto. At this time, I'm just collecting some parts before i dig into the engine parts for pistons and cam. This will be a dd and not a stroker engine, just a good built 4.0. I had a clutch replaced in 2007. but don't know what brand it was. It served me well. Please let me know what you or your buddies believe is a good replacement. Thanks Paul

[89 MJ]

I like my Luk clutch kit. It has been perfect for daily driving without being too stiff, but it still doesn't slip when off roading, towing, or when I dump the clutch like an idiot (which is rare, but fun). 

[ratrapp]

i second the luk clutchs.good clutchs if you use them for what there intended to be used for.thats the only clutch i use in my shop for the last 10 years and i havent a had single one die or fail prematurely.

[pizzaman09]

I think every clutch I have ever changed in my life was an LUK, they all work great.

According to the maintenance records for my MJ, the dealership that owned it put a LUK clutch in it, I've worked it harder than most people would with zero issues.  My vote is LUK.

[derf]

I've had a couple of Centerforce clutches in my day.  I get the CF or CF-II for stock replacement-ish applications and they perform well.

 

I've heard good things about LUK as well.

 

Stay away from the so-called high performance clutches.  They tend to be less fun to drive every day.  Good for performance driving, less so for daily use.

[ghetdjc320]

Luk rep-set has been my go to. But chuck the throw out bearing and get a timken or skf unit

[Big Dan]

On 7/8/2025 at 6:28 PM, ghetdjc320 said:

Luk rep-set has been my go to. But chuck the throw out bearing and get a timken or skf unit

 

Thread revive here - I know the "throw away the Luk bearing" (or insert brand of composite bearing) is always said.  I'll put one in for the camp of the provided bearing.  I haven't had any issues with the Luk one.  Currently going on 3 years.

 

When I did my external slave swap, I actually bought a timken, and a national bearing, to compare to the provided one.  National was gritty and off center.  Luk and Timken looked fine.  I ended up just trying the Luk.

 

Point being - anecdotal, but, just check out what you have and make your decision from there.

[PIKE]

Another vote for LuK.  I have one in my Ford 7.3 Powerstroke F350 and my Comanche 4.0 AX15.  The one in my Comanche is the Pro Gold version.

[TheNerfsmith]

To add to this, I have a LUK in my AX-15. Works great, I haven't had any issues with it. 

[rokinn]

I used the heavy duty Luk in my AX-15.  I wasn't able to notice any difference between the original and the new one as far as stiffer action in the clutch pedal.  Definitely smoother engagement from the old one.  Bought a Timken throw out bearing.  Switched from internal to external slave along with new master and converted to DOT 5 silicone brake fluid.  Happy with the results.