1994

Z50R

'94

AB02E-6506520

AB02E-6512294

12 Volt CDI

Does your engine serial number fall within this range?
tmas

 

1994

Z50R

'94

AB02E-6506520

AB02E-6512294

12 Volt CDI

Does your engine serial number fall within this range?
tmas

Yep.

 

I've just learned that because my cases are GB4 cases, both of the kits I posted should work.

I've been advised that the six speed gearboxes are fragile and this 5-speed is the way to go.

SP TAKEGAWA Super Street 5-Speed Transmission Kit [02-04-0047] - ¥58,000 : J-Parts, The Ultimate Online Shop fo Premium Japanese Motorcycle Parts and Accessories

Do you have any suggestions, Tmas?

 

I've been advised that the six speed gearboxes are fragile and this 5-speed is the way to go.

Do you have any suggestions, Tmas?

I wonder if these stories of Fragile 6 speeds are from people who actually own one, or just heard it from someone on the internet. I own alot of this gear and I've had more failures with 5 speeds than with 6 speeds - my 20 cents worth.

 

Sorry, I forgot about this. After looking at your engine serial number I'd say it will work. The ZB serial number is AB22 and it's the same 12 volt cdi motor. The five speeds are good but have been known to crack first gear by kicking it over and being on TDC. The kickstarter gear puts too much pressure on first and it snaps. Something to think about. Bump starting or being a little off TDC is recommended. The more gears you fit in the case means they have to be made thinner and they are not as strong.
tmas

http://planetminis.com/forums/z50-c...rums/z50-ct70-jdm-monkeybikes/149684-busted-5-speed-transmissions-takegawa.html

1988

ZB50

88

AB22E-2000001

AB22E-2100000

12 Volt CDI

 

Sorry, I forgot about this. After looking at your engine serial number I'd say it will work. The ZB serial number is AB22 and it's the same 12 volt cdi motor. The five speeds are good but have been known to crack first gear by kicking it over and being on TDC. The kickstarter gear puts too much pressure on first and it snaps. Something to think about. Bump starting or being a little off TDC is recommended. The more gears you fit in the case means they have to be made thinner and they are not as strong.
tmas

http://planetminis.com/forums/z50-c...rums/z50-ct70-jdm-monkeybikes/149684-busted-5-speed-transmissions-takegawa.html

1988

ZB50

88

AB22E-2000001

AB22E-2100000

12 Volt CDI

Excellent, thank you for the information!

I know all about breaking parts because of being at TDC. I learned how to start big singles when I was young so I always get them just past TDC before I kick them over. You learn your lesson starting TT500's and YZ426's when you're 14 years old and weigh 100lbs.

If and when I get these kits I'll probably pull the kick starter off of the engine so people can't jump on it and try to start it easily.

 

An 88 and a 6 speed will be a great combo, I've got 1 x 106 Scut +R 4v, a 124 Superhead +R, and 2 138's and haven't had a problem with the 6 speeds in these - I think rider habbits contribute to many gearbox failures

 

im terified of the speeds youd hit with 6 gears

 

It is not the amount of gears, it's the engine which generates the speed.
(My daytona 150 has only 4 gears, but it is fast.)