KZ550 powered YZ125 project
- 79MKII
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Re: KZ550 powered YZ125 project
18 Apr 2010 08:07
Really cool video! Hearing that Kaw 4 cylinder sound coming off that dirt bike is soooooo cool. Can't help but smile ear to ear when watching it! :laugh:
The Kaw List:
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250
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- nelson8708
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Re: KZ550 powered YZ125 project
27 Apr 2010 11:48
Its up for sale, 800$ for you guys.
-Nelson
-Nelson
1996 yz125 power with 1982 kz550 engine
1989 240sx Turbo weekend warrior
1993 Civic daily beater
1989 240sx Turbo weekend warrior
1993 Civic daily beater
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- 79MKII
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Re: KZ550 powered YZ125 project
27 Apr 2010 12:39
Wow, seems pretty cheap considering all the work that went into it. It would be a great toy to play around with. I would think you could get that out of it pretty easily, but I guess time will tell.
You might have already covered this - but can it be titled as the 550? Would be a cool super moto bike if you could get plates for it.
You might have already covered this - but can it be titled as the 550? Would be a cool super moto bike if you could get plates for it.
The Kaw List:
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250
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- nelson8708
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Re: KZ550 powered YZ125 project
02 May 2010 09:43
I had planned to title it as a 550. If i ever got pulled over the vin would match (cut it out of the neck before i trashed the frame). Its just a custom 550 with yamaha suspension :laugh: . I dont see why you wouldn't be able to plate it unless the bmv in your state has to phyically go over the bike.
Price drop 700$
Who needs a low mileage 550 engine? Buy the engine for 700 and it comes with a bike attached to it
Price drop 700$
Who needs a low mileage 550 engine? Buy the engine for 700 and it comes with a bike attached to it

1996 yz125 power with 1982 kz550 engine
1989 240sx Turbo weekend warrior
1993 Civic daily beater
1989 240sx Turbo weekend warrior
1993 Civic daily beater
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- Old Man Rock
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Re: KZ550 powered YZ125 project
02 May 2010 10:05
Now this is just way cool....
I was expecting to 1-5th gear wheelies for how the hell would you keep that light front end down.... :woohoo:
Excellente mi amigo... LUV it!
OMR
I was expecting to 1-5th gear wheelies for how the hell would you keep that light front end down.... :woohoo:
Excellente mi amigo... LUV it!
OMR
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
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- 79MKII
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Re: KZ550 powered YZ125 project
02 May 2010 10:05
Ohio only requires a VIN verification for out of state vehicle inspections. You could take the plastic off and they wouldn't think twice about it. On the couple that I've had done they just verified the VIN and approved it, no questions asked.
The Kaw List:
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250
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- 79MKII
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Re: KZ550 powered YZ125 project
02 May 2010 10:15 - 02 May 2010 10:18
By the way, does the stock yamaha fuel tank still fit? It looks like it might be on there in that last video.
The Kaw List:
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250
Last edit: 02 May 2010 10:18 by 79MKII.
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- jeffasaki
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Re: KZ550 powered YZ125 project
02 May 2010 10:25
You should become a teacher.
The name of your offered course should be.....
How to have a very COOL bike 101.
Still giggeling hahahaha
The name of your offered course should be.....
How to have a very COOL bike 101.
Still giggeling hahahaha
78 Z1R
78 KZ1000
76 KH500 gone
71 HS1B 90
81 GS 1100 gone
80 PE400
02 KLR
Ontario Canada
78 KZ1000
76 KH500 gone
71 HS1B 90
81 GS 1100 gone
80 PE400
02 KLR
Ontario Canada
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- nelson8708
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Re: KZ550 powered YZ125 project
06 May 2010 13:31 - 06 May 2010 13:31
79MKII wrote:
Yeah, it fits perfectly on there and covers the coil up. I had to trim the bottom of the tank to fit the carbs in there and haven't had the bottoms plastic welded shut.
jeffasaki wrote:
That would be a fun class. I love doing these kind of projects. The only problem is i always lose money on them. Its ok though, one of the biggest adriline rush i have got in my life is when this thing first started. I swear i could barely walk up the stairs to get the camera i was so excited. Shaking legs.....you know the feeling
Price drop 550$....these engines go for that on ebay. Help me fund the next crazy project
By the way, does the stock yamaha fuel tank still fit? It looks like it might be on there in that last video.
Yeah, it fits perfectly on there and covers the coil up. I had to trim the bottom of the tank to fit the carbs in there and haven't had the bottoms plastic welded shut.
jeffasaki wrote:
You should become a teacher.
The name of your offered course should be.....
How to have a very COOL bike 101.
Still giggeling hahahaha
That would be a fun class. I love doing these kind of projects. The only problem is i always lose money on them. Its ok though, one of the biggest adriline rush i have got in my life is when this thing first started. I swear i could barely walk up the stairs to get the camera i was so excited. Shaking legs.....you know the feeling

Price drop 550$....these engines go for that on ebay. Help me fund the next crazy project
1996 yz125 power with 1982 kz550 engine
1989 240sx Turbo weekend warrior
1993 Civic daily beater
1989 240sx Turbo weekend warrior
1993 Civic daily beater
Last edit: 06 May 2010 13:31 by nelson8708.
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- Becker
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- The Doctor Will Rise Again
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Re: KZ550 powered YZ125 project
07 May 2010 15:04
where do you live?? if its not to far I'd be all over this.
78 KZ750B3
79 KZ400 LTD
78 KZ650C2
79 KZ650C3
78 KZ650B2A
80 KZ650F1
80 KZ650E1
81 CB750K Super Sport
79 KZ400 LTD
78 KZ650C2
79 KZ650C3
78 KZ650B2A
80 KZ650F1
80 KZ650E1
81 CB750K Super Sport
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- nelson8708
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Re: KZ550 powered YZ125 project
11 May 2010 10:57
Indianapolis, IN
1996 yz125 power with 1982 kz550 engine
1989 240sx Turbo weekend warrior
1993 Civic daily beater
1989 240sx Turbo weekend warrior
1993 Civic daily beater
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