Ar Design - Act Clutch Kit Special!

[AR Design II]

$480 Shipped! We will not be undersold! We will beat any written price.





Feel
A low to moderate pedal feel; smooth engagement with stock to low gear rattle


Life
Longer clutch life achieved through ACT's exclusive diaphragm design


Quality
Premium organic friction materials for heat tolerance, faster recovery from overheating and prevents warping of mating surfaces


Recommended Use
Recommended for street and race use


ACT Difference
All ACT pressure plates are dynamically computer balanced for smooth operation at high RPM


Torque Capacity (ft/lbs.):440Clamp Load Increase %:45%

[Sticky]

Very nice pricing right here...

[AR Design II]

Thanks Sticky! Yeah this is definitely a deal!

[Carl Morris]

Do they support AWD yet? What's the price with the race disk?

[lorddrinkalot]

Is it the BM8-HDSD?

Whats the price shipped to germany?

[AR Design II]

Do they support AWD yet? What's the price with the race disk?

Yes they do. I'll send you a PM

Is it the BM8-HDSD?

Whats the price shipped to germany?

Yep this pricing is for the the BM8-HDSD. I'll PM.

[Flinchy]

what sort of power/torque can this handle?

[ATP]

what sort of power/torque can this handle?

Torque Capacity (ft/lbs.):440Clamp

[AR Design II]

^this

[rdeterman]

i know that these are "underrated" in terms of power holding. would this be a good enough clutch for an RB car? I really do not want to go to a puck style clutch

[ATP]

i know that these are "underrated" in terms of power holding. would this be a good enough clutch for an RB car? I really do not want to go to a puck style clutch

Don't want to overstep in AR's sales thread but this was posted by @dzenno@ProTUNING Freaks

• "ACT STREET ORGANIC + RESURFACED OEM DMF (45,000km+)
  Mr.5 over on bimmerpost had extensive experience racing on his ACT Street clutch (organic) which was rated very well for stock turbos and high boost numbers the N54s were putting down. My issue with it was I had RB turbos on order already but given no other great option was available and the fact I got the ACT kit from a former member for $250 shipped I decided to just go with it in the meantime. ACT exceeded all my wildest expectations after having been through a situation with the CM unit. I had RB turbos installed and put down ~500whp ~500wtq on this clutch without any slipping. I literally put the car through hell for 11 months after installing it putting down about 40,000km on it and only recently it started to slip a tiny bit, and only sometimes, in 6th gear in low RPMs under full load. I wouldn't have even noticed it probably had I not tried to accelerate once from 2500rpm to datalog 6th gear After pulling it out last night the ACT still had about 20% material left in it. It survived about 5-6 drag strip days, about 50-60 1/4 mile passes, over 200 dyno pulls in all sorts of boost, many many full throttle (WOT) shifts, literally hundreds of datalogging runs in different gears. I was and still am extremely impressed with this obviously underrated clutch. It has a heavier pressure plate from stock and engagement is closer to the floor (forget about clutch stops with this one) but overall, a week into it and you're used to it, no issues daily driving at all. I highly recommend this clutch for anyone on stock turbos whatever sort of setup/racing they do, solid!
  
  Once I felt my ACT slip in 6th I was a bit saddened that there was no clutch on the market that has been tried and tested heavily in any sort of abusive racing environment where it would decently hold up and show itself to be worthy the money spent. I honestly didn't mind spending a chunk of coins on it provided it could stand up to my type of driving, which has gotten way more demanding than the stock clutch days, as well as be daily drivable. Organic material was great but with RB turbos torque curve (or should I say lack there of lol) there was no way an organic clutch would reliably work much past the 480-500wtq mark. ACT is truly underrated but I'd say 500wtq was showing as too much to ask from it under higher gear higher load situations. This only told me that its at/near its limits and then..."

[AR Design II]

Thank you sir! Haha I was actually about to post a similar review

[rdeterman]

Thanks for the posted review guys.. RB's are not in the immediate future but maybe within the next 12months and i dont want to do another clutch anytime soon. I do drag race and have drag radials that maybe somewhat hard on the clutch i know, i have been thinking Spec stage 2+ but for every couple good reviews I read I also read a bad one.. not sure what to do.

[AR Design II]

PM sent.

[Flinchy]

Torque Capacity (ft/lbs.):440Clamp

Ah thanks, probably a bit low for me then (even if it an take 500 as in the above review)


more of a stock/tuned replacement?

it IS a great price though..

[Carl Morris]

You guys that are worried about wearing out the street disk quickly should consider the 6-puck unsprung hub race disk. On the Mitsu it was kind of noisy with the unsprung hub, but the DMF should make a big difference there. Lasts much longer under heavy use, and friction increases as it gets hotter so you basically never get uncontrolled slippage until it's worn out. And contrary to rumors, it's very easy to drive. It's the sprung hub high friction stuff that's hard to engage smoothly.

[Flinchy]

You guys that are worried about wearing out the street disk quickly should consider the 6-puck unsprung hub race disk. On the Mitsu it was kind of noisy with the unsprung hub, but the DMF should make a big difference there. Lasts much longer under heavy use, and friction increases as it gets hotter so you basically never get uncontrolled slippage until it's worn out. And contrary to rumors, it's very easy to drive. It's the sprung hub high friction stuff that's hard to engage smoothly.

what?

a 6puck unsprung would be too harsh for 99% of people in a street car.. very on off and solid

i've driven one similar to that in a friends car, i think it's a 6puck sprung, and it's terrible, TERRIBLE to drive on the street for the first few months lol

[Carl Morris]

what?

a 6puck unsprung would be too harsh for 99% of people in a street car.. very on off and solid

i've driven one similar to that in a friends car, i think it's a 6puck sprung, and it's terrible, TERRIBLE to drive on the street for the first few months lol

Yes, the sprung race disk is a total PITA. But for people hard core enough that a street disk isn't going to cut it, and cheap enough to not want to buy a serious multi-disk clutch, the solid hub race disk is a good compromise. It's way easier to drive than the sprung hub race disk, and not that harsh. I've put tens of thousands of street miles on one with a SMFW and it wasn't that bad...it should be really easy with a DMFW. It's not nearly as hard to slip normally on the street as you are thinking.

[Flinchy]

Yes, the sprung race disk is a total PITA. But for people hard core enough that a street disk isn't going to cut it, and cheap enough to not want to buy a serious multi-disk clutch, the solid hub race disk is a good compromise. It's way easier to drive than the sprung hub race disk, and not that harsh. I've put tens of thousands of street miles on one with a SMFW and it wasn't that bad...it should be really easy with a DMFW. It's not nearly as hard to slip normally on the street as you are thinking.

In what way is it easier? The spring is supposed to smooth out the engagement isn't it? (Honestly asking here)

[Carl Morris]

In what way is it easier? The spring is supposed to smooth out the engagement isn't it? (Honestly asking here)

No, a sprung hub helps absorb rotational vibration from the motor rather than transmitting it to the whole drivetrain. This is the same vibration that is also absorbed nicely by a DMFW. But it also allows high friction disk material to grab/release/grab/release as you try to make a normal slipping takeoff. I have always called that engagement "chatter", but I see in the BMW world that word means a different thing. A solid hub can't do that and will slip relatively normally on mild takeoffs even though the disk material may be fairly sticky. This is a common misconception that makes people who would actually be happy with a race disk think that they shouldn't use one.

The real downside of a race disk is that with a SMFW some of that vibration makes it into the cabin at some RPMs and can be annoying. Also if there's some slop at the splines it can cause premature wear at the input shaft. The DMFW takes care of that...I believe that our factory disks are solid hub thanks to the DMFW.

[AR Design II]

stilll have these in stock