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Putting more weight on the front

Started by MTLZD, September 14, 2025, 06:20:14 AM

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MTLZD

Hi all,

I'm trying to change the geometry a little bit to make the bike slightly more eager to change direction. I will drop the forks for about 1.2cm, that's all that the slip-on risers will allow before they touch, and that's what has worked in the past for me. I'm also thinking about putting a spacer under the rear shock, so I want to see if anyone has done it before I go ahead and figure it out ony own.

Any land all suggestions welcome!
1987 FJ1200

Pat Conlon

Please go to your profile and put into your signature line that you have a 1987 FJ1200. That info will then automatically appear in your posts, you won't have to remind us. That info will help us, help you.

Unlike the '88 and later FJ's that use the dog bone style of swingarm linkage, your '87 does not have that, so the only way I'm aware of raising your rear end height is by using a longer shock. Several aftermarket shock manufacturers have a threaded adjustable shaft on their shocks for this purpose.

You could convert your linkage over to the '88-95 FJ dog bone linkage but that's a lot of work and seeing that you probably need to replace your weak sauce oem shock anyway, it's easier to just get an adjustable length shock to begin with...

Your instincts are spot on, kudos.
IMHO one of the best improvements in FJ handling comes from getting more weight on that front tire.

Cheers

Pat
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

Sparky84

Quote from: MTLZD on September 14, 2025, 06:20:14 AMHi all,

I'm trying to change the geometry a little bit to make the bike slightly more eager to change direction. I will drop the forks for about 1.2cm, that's all that the slip-on risers will allow before they touch, and that's what has worked in the past for me. I'm also thinking about putting a spacer under the rear shock, so I want to see if anyone has done it before I go ahead and figure it out ony own.

Any land all suggestions welcome!
Not sure how you would fit a spacer.

As suggested you can get length adjustable shock, but you can also get a shock with a longer thread for the lower eye, YSS do one but sounds like you want to do it a bit cheaper, maybe your existing shock has a removable eye you could replace.

Good Luck

1984 FJ1100
1979 Kawasaki Z1300
1972 Honda CB750/4 K2

MTLZD

Thank you both! I will keep all that in mind. I actually have an aftermarket shock, so I'll see what I can do with it.
I have amended the signature as suggested.
1987 FJ1200

MTLZD

Quote from: Sparky84 on September 14, 2025, 04:18:24 PM
Quote from: MTLZD on September 14, 2025, 06:20:14 AMHi all,

I'm trying to change the geometry a little bit to make the bike slightly more eager to change direction. I will drop the forks for about 1.2cm, that's all that the slip-on risers will allow before they touch, and that's what has worked in the past for me. I'm also thinking about putting a spacer under the rear shock, so I want to see if anyone has done it before I go ahead and figure it out ony own.

Any land all suggestions welcome!
Not sure how you would fit a spacer.

As suggested you can get length adjustable shock, but you can also get a shock with a longer thread for the lower eye, YSS do one but sounds like you want to do it a bit cheaper, maybe your existing shock has a removable eye you could replace.

Good Luck


so yeah, I have a Wilbers with remote adjustment, and I always want it cheaper, ideally elbow grease and that's it  :yes: I'll dive in over the weekend and see what I can do about it
1987 FJ1200

giantkiller

I put the Honda shock on mine. With a 900lb spring. It put my back tire lightly on the pavement when on the center stand. And I put gixxer 1000 forks on it. I let my neighbor who raced a gixxer 1000 locally Elkhart lake raceway. And the track in Illinois that I can't remember the name. He was second in points at the time. Take it for a spin. He was gone a really long time. When he finally came back. I could see his smile through his face shield. He jumped off took his helmet off. And as he was staring at the bike.  He said I don't know what you did! But you got the geometry just right. He said it turns in better than my race bike.
86 fj1350r
86 fj1380t turbo drag toy (soon)
87 fj1200 865 miles crashed for parts
89 fj1200 touring 2up
87 fzr1000 crashed
87 fzr750r Human Race teams world endurance champion
93 fzr600 Vance n hines ltd for sale
Custom chopper I built
Mini chopper I built for my daughter just like the big 1

MTLZD

Quote from: giantkiller on Yesterday at 11:52:26 PMI put the Honda shock on mine. With a 900lb spring. It put my back tire lightly on the pavement when on the center stand. And I put gixxer 1000 forks on it. I let my neighbor who raced a gixxer 1000 locally Elkhart lake raceway. And the track in Illinois that I can't remember the name. He was second in points at the time. Take it for a spin. He was gone a really long time. When he finally came back. I could see his smile through his face shield. He jumped off took his helmet off. And as he was staring at the bike.  He said I don't know what you did! But you got the geometry just right. He said it turns in better than my race bike.

Unfortunately I cannot swap the front end and put a 17" wheel because here it has to have the catalogue sizes, otherwise fails the test and can't be registered. If I don't manage as is, I'll definitely find a longer shock. Maybe I'll even raise the seat a little to put me higher and more forward.
1987 FJ1200