ID me

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ID me

27 Dec 2025 23:18
#920101
Has anyone seen this set up before ? I didn't see much on a Google search...
1977 kz1000 - the Rooster, 1981 KZ750 Chopper, 1975 KZ400 , 1984 GPZ750

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Re: ID me

01 Jan 2026 08:32
#920243
Any one recognize the maker of the clutch? 
experimental lock up im assuming but would love to find out more.
1977 kz1000 - the Rooster, 1981 KZ750 Chopper, 1975 KZ400 , 1984 GPZ750

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  • Wookie58
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Re: ID me

01 Jan 2026 08:53
#920244
Mr. E wrote:
Any one recognize the maker of the clutch? 
experimental lock up im assuming but would love to find out more.
Could be an early MTC unit ref the below link to ART

1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
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Re: ID me

02 Jan 2026 15:31
#920275
I reached out to MTC, Hope to hear back - I will update with what I find out!
1977 kz1000 - the Rooster, 1981 KZ750 Chopper, 1975 KZ400 , 1984 GPZ750
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Re: ID me

29 Jan 2026 12:59
#921048
MTC said they had nothing to do with it -

I was referred to FBG to see if he knows what wass up , but I did see another full ART clutch on a bike for sale on FB. In talking with the seller he was able to tell me ART stood for American Racing Tech but was unable to find any more information either- 

The search continues.....
1977 kz1000 - the Rooster, 1981 KZ750 Chopper, 1975 KZ400 , 1984 GPZ750
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Re: ID me

29 Jan 2026 15:38
#921050
Not to add to the mystery but mine is a MRE lock up on my kz-1000 A1. It came with a spacer plate between the cases and the clutch cover. I haven't had it opened since then but I think it had more counter weights than the one pictured.

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Re: ID me

29 Jan 2026 15:52
#921052
urankjj wrote:
Not to add to the mystery but mine is a MRE lock up on my kz-1000 A1. It came with a spacer plate between the cases and the clutch cover. I haven't had it opened since then but I think it had more counter weights than the one pictured.
Yes! The MRE and MTC lockup's have 5 .
One for each clutch spring which is the common configuration.
AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
www.kzrider.com/23-for-sale/611992-air-c...lide-mikunis?start=0





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Re: ID me

29 Jan 2026 16:30
#921054
zed1015 wrote:
urankjj wrote:
Not to add to the mystery but mine is a MRE lock up on my kz-1000 A1. It came with a spacer plate between the cases and the clutch cover. I haven't had it opened since then but I think it had more counter weights than the one pictured.
Yes! The MRE and MTC lockup's have 5 .
One for each clutch spring which is the common configuration.
Karata has 5 as well

Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn

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Re: ID me

30 Jan 2026 06:07 - 30 Jan 2026 07:18
#921060
All lockup kits I have seen are just covers and plates with pressure arms, this looks like a complete modified hub probably for the spring configuration.

Like others have mentioned not sure why they have chosen to use 3 springs/arms, a bit unusual.

If I want less static pressure in a lockup you can run only 4 springs if needed, its not going to effect the way it works. The way this is configured your kind of stuck for adjustment unless you alter the spring stack.

 
1978 KZ650B2 w 1197cc Z1 engine
1977 KZ650B1 w 750cc Spectre engine
1979 KZ650C3 w 831cc Hot Rod engine
1978 KZ650C2 w 762cc DFI project
1977 KZ650C1 stock restoration project
1978 KZ650B2 modified project
1978 KZ650B2 Injected Drag 831cc
1980 Z1 Custom Frame Drag 1327cc
1981 Z50R Honda tow bike
Last edit: 30 Jan 2026 07:18 by Injected. Reason: more info

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Re: ID me

31 Jan 2026 07:56
#921087
It's got be wondering what the clutch cover looked like

OR  could it be a dry clutch setup

Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn

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