Another suspension question

[The Bearded Duc]

I'm sure this has been gone over many times before but I didn't browse....
Anyhow, does anyone know if 2001 Monster 900 S4 forks are a direct bolt on for my '01 M750?

I found and used but good condition set for cheap and what to know if they're worth my time.

[Ddan]

I don't think there was a 900 S4, but '01 900 Monster forks should fit an '01 750

[ducpainter]

I believe that the S4 was called a 900 in some literature, we all know it had a 4V motor, and the forks will fit your 750. They might be slightly longer,

Just to be sure measure the areas that clamp in the triples. 50 mm top and 54 bottom.

[Speeddog]

They will fit in the triple clamps of your '01 M750, but they'll be about an inch shorter. 

S4 forks are 27 5/16" from axle centerline to top of the outer leg, when *fully* extended.
The forks on the '01 M750 are 28 5/16".

I'm basing this on an '01 M750 in my shop, I'm 99.99% sure the forks are original.

However, they stick out of the upper triple about 0.70", so you would be dropping the front 0.30".

[The Bearded Duc]

They will fit in the triple clamps of your '01 M750, but they'll be about an inch shorter. 

S4 forks are 27 5/16" from axle centerline to top of the outer leg, when *fully* extended.
The forks on the '01 M750 are 28 5/16".

I'm basing this on an '01 M750 in my shop, I'm 99.99% sure the forks are original.

However, they stick out of the upper triple about 0.70", so you would be dropping the front 0.30".

That being said, I don't the front being lower by an inch or less so that's still an option. But are there other options? Say, new internals? I kinda want the ability to adjust but I'd settle for just a smoother ride.

[scott_araujo]

You can easily change springs, oil weight, and oil level in the forks you have now.  You'll need to disassemble to adjust but once you get it right it will be much better.  If they are Showa forks you can probably get new internals.  Marzocchi can get new internals from Traxxion Dynamics but they are pricey and seem hard to actually get a hold of.  There was someone on TOB that posted up doing it, parts looked nice.

Dropping the front end an inch is a pretty radical change to your steering geometry.  It may make the bike very unstable.  .3", maybe doable.

Scott

[The Bearded Duc]

Dropping the front end an inch is a pretty radical change to your steering geometry.  It may make the bike very unstable.  .3", maybe doable.

Scott

Is there a fork conversion that wouldn't change the geometry and wouldn't be that pricey?

[Speeddog]

I think the adjustable Showas on the SS are long.

I don't have measurements off of a set.

[battlecry]

Speeddog is right.  The SS's are quite long.  I was shipped SS cartridges by mistake and when I installed them on my Monster forks the slider area was 170mm instead of the nominal 130mm.  So you are talking about a  40mm delta.

[Mr Earl]

SS900 adjustable Showas are long enough to interfere with Monster handlebar mounting, long enough to install Swatt clip-ons above the triple and have tube left over.  A huge improvement, however, with the right springs and fluid.