R50/53 Clutch release bearing ?
Clutch release bearing ?
Which clutch release bearing is best: Sachs or Exedy for single mass conversion on R53 Jcw ? Got a deal on Valeo setup clutch,pressure plate , & flywheel ; need release bearing & flywheel bolts .
i went with the Exedy SMF kit back before the insane price hike
was swayed in favor of it over the Valeo by @pnwr53s & his report/reviews
flywheel slightly lighter than Valeo
good pic of the Exedy throwout bearing in this post;
https://www.northamericanmotoring.co...ml#post4351932
i think most of them are of the same type,
that chintzy plastic
this is the absolute best solution for our crappy throwouts that i've seen,
from RMW
https://store-revolutionmini-com.3dc...ing_p_271.html
.
Still no luck in finding a supplier for single mass flywheel bolts , checked with Valeo, Exedy & Sachs with no luck ?
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Edit: Link - https://detroittuned.com/arp-flywhee...g7MIr5FF17hZIA
Summit racing had them a little bit cheaper.
2nd edit: If you reach out to Valeo support, they should be able to tell you the bolt size. I think it's an m10-1pitch but I never got confirmation if it's 20-24 in length. If you do find some in that size range, just make sure you get the right hardness. 10.9 or higher.
Last edited by Kibbis; Mar 25, 2026 at 04:51 AM.
no complaints
does what it's supposed to do
just worried about lifespan longevity & wish that we had an upgraded aftermarket option
something similar to this one by OS Giken:
the Exedy one is pretty much a facsimile of the OE unit
but hey, my OE unit lasted up until 160,000 miles!
so partially my fault for not addressing it sooner
when it gave up the ghost, pretty much had just disintegrated:
luckily it didn't explode,
there's a couple of reports here on NAM of such . . .

. . . & one instance where shrapnel at velocity smashed through the bell-housing !!!
https://www.northamericanmotoring.co...-gone-ied.html
no complaints
does what it's supposed to do
just worried about lifespan longevity & wish that we had an upgraded aftermarket option
something similar to this one by OS Giken:
the Exedy one is pretty much a facsimile of the OE unit
but hey, my OE unit lasted up until 160,000 miles!
so partially my fault for not addressing it sooner
when it gave up the ghost, pretty much had just disintegrated:
luckily it didn't explode,
there's a couple of reports here on NAM of such . . .

. . . & one instance where shrapnel at velocity smashed through the bell-housing !!!
https://www.northamericanmotoring.co...-gone-ied.html

had already bought the new part so installed it even tho the old one still looked okay.
I looked this up on RealOem , your right about 48 mm but, appears to be for twin mass flywheels.
Last edited by Tombstone; Mar 26, 2026 at 12:39 PM.
Turner lists the Valeo bolt specs
looks almost the same as this Febi bolt:
which is essentially a VW part # N90206103
blue threadlock instead of red though
unsure of thread pitch though so that may throw a curveball
hope this might help
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Drivetrain Clutch and flywheel suggestions please.
DJDUPONT
Drivetrain (Cooper S)
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Sep 11, 2011 10:05 PM








