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Discussion Starter · #1 ·
I am looking to make some upgrades to my stock suspension and have seen just about everything installed on the front end of a Z. I am looking for something bolt on if possible. I was reading that the xr75 and xr70 forks are a good choice for the Z. Do the xr75/70 top clamps bolt on as well? Is there any fitting problems with the tire size difference? I was hoping to find a install that someone posted to see what I am getting myself into before I start. Any info or suggestions on forks would be appreciated.
 

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ballzee99 said:
I am looking to make some upgrades to my stock suspension and have seen just about everything installed on the front end of a Z. I am looking for something bolt on if possible. I was reading that the xr75 and xr70 forks are a good choice for the Z. Do the xr75/70 top clamps bolt on as well? Is there any fitting problems with the tire size difference? I was hoping to find a install that someone posted to see what I am getting myself into before I start. Any info or suggestions on forks would be appreciated.


I have xr75 shocks and the heavy duty springs from fast50s on my 74 z50. The springs up front made a vast improvement and were ~$50, I cant remember.
 

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Discussion Starter · #3 ·
What did you use for top/bottom clamps? Did you have to do heavy modifications? Can you post a pic of your setup. Thanks for the reply
 

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What year Z are you working on? I've got a '74 softtail parts bike with a two-piece top clamp on it. I'm not sure if this is standard for that year of it's off some other year, but the point is some years you could unbolt the fold-down handlebar arrangement from the top triple clamp/plate, and replace it with bar clamps from a small Honda that used standard bars. I think you could use SL70, XR 75/80, etc. for this. So, if you're working with an older bike with the one-piece cast aluminum top clamp, maybe you could find a top plate off a later year, for cheap.



Or just shell out for the fast 50s setup, which is probably stronger and certainly blingier.
 

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mexicanyella said:
What year Z are you working on? I've got a '74 softtail parts bike with a two-piece top clamp on it. I'm not sure if this is standard for that year of it's off some other year, but the point is some years you could unbolt the fold-down handlebar arrangement from the top triple clamp/plate, and replace it with bar clamps from a small Honda that used standard bars. I think you could use SL70, XR 75/80, etc. for this. So, if you're working with an older bike with the one-piece cast aluminum top clamp, maybe you could find a top plate off a later year, for cheap.



Or just shell out for the fast 50s setup, which is probably stronger and certainly blingier.




My '74 z50 has the same two piece top clamp.
 

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i wanna fix up the supsenion in my 74 z50 too was looking at these springs but also saw the new fork legs and bushings.





Fast50s.com "The Original xr50 Specialist" - Performance Parts Front Fork Springs

will the springs improve stability and stiffin up the front withstock legs?





Fast50s.com "The Original xr50 Specialist" - Performance Parts z50 Stock Replacement lower fork legs

says they are longer and lower really? if so by how much i don't wanna change the stance but just get something sturdier.



Fast50s.com "The Original xr50 Specialist" - Performance Parts Fork Leg Bushings - Fast50s Fork Legs

and i guess these are need for the fast 50 legs.

Fast50s.com "The Original xr50 Specialist" - Performance Parts Fork Leg Bushings - Stock Legs

but are these worth any thing?



personally i doubt i could afford any more than the springs and stronger bushings.



oh what about stiffer rear shocks?
 

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Discussion Starter · #8 ·
I am working with a 95Z. I have started looking for some xr70/75 front forks, but have not had much luck on finding any definitive answers about which triples work the best. I have also read that you need to grind down the stock brake hub and spacer, but have not seen any detailed information on this, like do's and don't when you make this mod. Anyone have a reference to a detailed install?



Also if I go with the xr forks what needs to be done to them regarding seals, springs and dampening rods? and where can I get them.
 

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cdoublejj said:
i wanna fix up the supsenion in my 74 z50 too was looking at these springs but also saw the new fork legs and bushings.





Fast50s.com "The Original xr50 Specialist" - Performance Parts Front Fork Springs

will the springs improve stability and stiffin up the front withstock legs?





Fast50s.com "The Original xr50 Specialist" - Performance Parts z50 Stock Replacement lower fork legs

says they are longer and lower really? if so by how much i don't wanna change the stance but just get something sturdier.



Fast50s.com "The Original xr50 Specialist" - Performance Parts Fork Leg Bushings - Fast50s Fork Legs

and i guess these are need for the fast 50 legs.

Fast50s.com "The Original xr50 Specialist" - Performance Parts Fork Leg Bushings - Stock Legs

but are these worth any thing?



personally i doubt i could afford any more than the springs and stronger bushings.



oh what about stiffer rear shocks?


Thats all I installed (springs and bushings) and its great. The spring alone raises the front end ~1" anyways & its much sturdier. The bushings have had a longer life than any oem I've used so far.



The xr75 shocks raise the rear end just about the same amount so you're not stink-bugging or pre-running at all. I had the shocks already but I'm sure you can find them on ebay or something.



That alone made my z 100% more stable and didn't cost much$$$$$ compared to what you can spend if you want to.
 

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You are not able to lower the forks in the upper triple clamp using the older XR75/80 top triple clamp, it is made just like the Z one. The alternative is to use older XR100 triple clamps, and having the steering stem machined down to fit in the Z frame properly. You can then lower the forks about 1-1/2" up into the top triple, before the fork bottoms on the handlebar.

I also think that, with some lathe work on the Z brake panel and wheel spacer, the wheel can be made to fit. Going to be looking into that aspect within the next few days.
 

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i can help you with the bmx style bar set up. got to you local dealer and have them pluss up a 79 z50. they have a bmx style top clamp. its is 50 ish bucks i ordered one the other day. its all nice and new also.



Will any year z50,xr,crf, springs fit the older z's???
 

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Discussion Starter · #14 ·
I talked with CHP today per the advise of another Z builder and they can order triples the hold 27mm forks. I believe they are for a monkey, but they allow you to add the Z wheel to the front with some modification to the brake hub and spacer. I was quoted $240 for the parts, which I was not overly excited about. I plan to extend the rear swingarm and probably add 305cm shocks. The stock XR70 forks may not be a bad option if I adjust the rear to fit the front. Does the stock 70 triples mount up to a Z frame without modifications? Any thoughts?
 

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Discussion Starter · #15 ·
Has anyone tried to install crf70 top clamps on a newer Z? I was thinking to get a set and try to mod them. Any thoughts?
 
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