Progressive 412 shocks, anybody happy?

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07 Aug 2016 08:40 #737702 by MadShad
So I know it's a little late to ask opinions since Ive already ordered them :side:

I had a rear shock blow out, originial stuff.

I ordered progressive 412 shocks with standard springs and progressive front fork springs.
Should be here Tuesday, this was one of the more economical choices.

Looking for reviews from folks who run this set up.

Shelbyville, Indiana. '80 KZ1000
No more of that talk or I'll put the leeches on you, understand?

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07 Aug 2016 11:58 #737721 by Nessism
Replied by Nessism on topic Progressive 412 shocks, anybody happy?
I think you will be happy. I've used their springs are several bikes and liked them. I don't have any personal experience with the shocks but think they are a good value.

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  • 9er rider
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07 Aug 2016 12:25 #737724 by 9er rider
Replied by 9er rider on topic Progressive 412 shocks, anybody happy?
Pretty hard front end so I went race tec gold emulators and fork springs. Love them There like night and day ! shocks I like very well

76 kz 900 1075 76 kz 900 a4 78 kz 1000 ltd

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07 Aug 2016 12:29 #737725 by MadShad
Replied by MadShad on topic Progressive 412 shocks, anybody happy?
I changed to fresh 10 weight oil up front and it helped but still pretty harsh over bridge seams and other small stuff.
My rear shock just kinda puked all the oil out while sitting, was dripping down on the wheel and tire.

It's got to be an improvement.

Shelbyville, Indiana. '80 KZ1000
No more of that talk or I'll put the leeches on you, understand?

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07 Aug 2016 15:10 #737738 by SWest
Replied by SWest on topic Progressive 412 shocks, anybody happy?
New progressive springs up front in 13. 15W oil and the front end glides over the bumps large and small. I replaced all the wheel bearings too. I'll get emulators eventually but no hurry.
Steve

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07 Aug 2016 15:46 #737741 by bountyhunter
Replied by bountyhunter on topic Progressive 412 shocks, anybody happy?

MadShad wrote: So I know it's a little late to ask opinions since Ive already ordered them :side:

I had a rear shock blow out, originial stuff.

I ordered progressive 412 shocks with standard springs and progressive front fork springs.
Should be here Tuesday, this was one of the more economical choices.

Looking for reviews from folks who run this set up.

I got the progressive (brand) gas shocks for my rears along with progressive springs and they are way better than stock.

1979 KZ-750 Twin

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07 Aug 2016 15:48 #737742 by 650ed
Replied by 650ed on topic Progressive 412 shocks, anybody happy?

MadShad wrote: I changed to fresh 10 weight oil up front and it helped but still pretty harsh over bridge seams and other small stuff.
My rear shock just kinda puked all the oil out while sitting, was dripping down on the wheel and tire.

It's got to be an improvement.


What air pressure are you running in the tires? Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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07 Aug 2016 23:34 #737790 by loudhvx
Replied by loudhvx on topic Progressive 412 shocks, anybody happy?
I really like the 412 shocks. I was able to fit some Kz550 Ltd springs to the 412 shocks with slight modification. The Ltd springs were actually a little longer than the gpz springs, and were closer to the right diameter.

The only problem is that they don't come in the length I would like. They are about 1/8" shorter than stock 81 gpz550 shocks. I ordered longer ones and cut them down.

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09 Aug 2016 10:25 #737997 by MadShad
Replied by MadShad on topic Progressive 412 shocks, anybody happy?

650ed wrote:
What air pressure are you running in the tires? Ed


Low 30's,
The new shocks and springs should be sitting on my porch when I get home!

Shelbyville, Indiana. '80 KZ1000
No more of that talk or I'll put the leeches on you, understand?

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09 Aug 2016 12:34 #738018 by carwash
Replied by carwash on topic Progressive 412 shocks, anybody happy?
I'm having some clearance issues with mine, see this thread. I'll probably switch to some slim Hagons at some point.
kzrider.com/forum/24-wanted/603075-12-shocks?limitstart=0

1980 KZ550A
1980 CB750F

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09 Aug 2016 13:04 #738020 by MadShad
Replied by MadShad on topic Progressive 412 shocks, anybody happy?
I'm using 13.5" so hopefully I won't have those issues.

Shelbyville, Indiana. '80 KZ1000
No more of that talk or I'll put the leeches on you, understand?

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09 Aug 2016 16:25 #738033 by carwash
Replied by carwash on topic Progressive 412 shocks, anybody happy?
Well in my case it's not the length that's the issue, it's the offset of the lower mount and the spring diameter.
Offset set one way causes the bottom of shock to hit my muffler, offset the other way causes the lower portion of the spring to nearly hit my chain.

MadShad wrote: I'm using 13.5" so hopefully I won't have those issues.


1980 KZ550A
1980 CB750F

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