rear shock interchangeability

[mmakay]

The good news, of course, is that SBK forks allow you to run clip-ons above the triple without sacrificing your geometry.  That opens up a million (no, a TRILLION!  ) options for low cost clip-ons, because you don't need any rise to keep the bike reasonably comfortable.

[Paegelow]

I have a 749 fully adjustable shock if you want to try to put that on. My friend just bought the same shock and hes gonna attempt to install it on his 695. Should fit fine.

Bringing this one back from the dead...  He Man, any confirmation on whether or not that 749 shock actually fit on the 695?  I've seen a few 749/999 shocks for sale lately.  I have a 695 as well and I'm looking to upgrade!

[He Man]

not yet shock is still sitting at my friends house. we were gonna swap shocks. i have a 1098 showa on hand.

[ducpainter]

Even if a SBK shock 'fits' it won't work right.

The linkage geometry on the SBK and monster is totally different. SBK stock spring is about an 8. The stock rate for an Ohlins on a Monster is a 9.5 and you don't have to be very heavy to need more.

Add to that the fact that valving and spring rates go hand in hand I don't think you'd be any better off.

[He Man]

+1

I happen to be 165lbs gear up. According to the Ohlins website, a stock 999 SBK is  a 6.93 (if your going by Kg/mm. Recommended for my weight is 8.66. Its not a lot and i think with a new spring, the improvement will be well worth the $20 shock and whatever the cost of the spring is.

at the same time, if your significantly heavier, youll see an improvement with just a spring on your stock shock. Friend went up to approriate shock on a 695 (i think hes ~180lbs without gear) and he said its much better than stock. At that point I dont think going the SBK swap will do much... it might, you never know. Ask Monstermash since he has tried the 999 shock on his S2R1000. Im not sure if he swaped the spring when he tried it or how much he weighs.

All the fluid needs to move much quicker, so you COULD port them i guess. I have a friend who revalved his forks with a drill press on his GSXR-600 and said his improvements were amazing....really he just copied the porting design off a racetech valve! I wouldnt recommend that unless a shop is going to drill it for you, or you have balls to do it yourself.

Racetech sells valves for the 999 showas...the costs is about ~$150 last i checked, though for the cost of rebuilding the damn thing and buying new shocks...id much invest it toward those discounted on sale penskes or matris you see on motowheels or oncycles. you get a hell of a lot more adjustment out of them not to mention they come valved and sprung for your weight.

Also, the SBK shock actually doenst 'fit' you have to do some tweaking to get it to fit there cleanly. the rear coil adapter and the breather box gets in the way.

[Paegelow]

Overall length of the upper fork legs, from the bottom of the scraper/seal to the top of the cap or adjuster-

SBK forks: 20.5"
Monster adjustable showas: 19.5"
Non-adjustable Marzocchis: 18.5"

The above are 65mm caliper bolt spacing, 25mm axle models.
The axle holes are 30mm on the big end, 25mm on the small end.

Not sure if all SBK forks are 25mm axle or not.

Just did two swaps of adjustable Showas, into M620 and S2R800.
Bar to adjuster clearance was tight.

AFAIK, you would need bar risers or clip-ons for the SBK forks.

OK I'm revisiting this thread again.  Thinking about swapping in some superbike forks this time.  So the dimensions we have to worry about are the triple clamp diameters, caliper bolt spacing, and axle size, right?

I'm looking at a 748 fork right now and wondering if it would work.  Dimensions are as follows:
Triple clamp diameter = 53mm
Caliper bolt spacing = 65mm
Axle dimaters = 30mm (big end), 25mm (small end)

So would everything bolt right up on my bike ('07 695), except the triple clamps?  Would I have to only modify the upper triple clamp, or both?  Will my existing brakes and wheel still work?

[Speeddog]

Typical routine is to bore out the upper triple, or fit an aftermarket one with the correct 53mm bore.
Shimming the lower triple is the standard method.

Going to need bar risers or clip-ons, IMO.

Your front axle will not have the holes in it to access the compression adjusters, so either get an axle with the holes or drill 'em.
I'd recommend just getting the axle with holes...

I think you're OK on the rest of it.

Those forks will likely be sprung pretty stiff, regular 748's came with 1.0 kg/mm springs.
Unless you're in the vicinity of 200 lbs, respringing would be a good idea.

[Paegelow]

Cool, thanks for the quick response!

What do you use to shim the lower triple clamp?

So, my existing brakes would work with those forks, right?  The rotor diameters should be the same?

[mookieo2]

Cool, thanks for the quick response!

What do you use to shim the lower triple clamp?

So, my existing brakes would work with those forks, right?  The rotor diameters should be the same?

Unless you get older 748 forks. Some have 40 mm spacing instead of the 65mm like on the monster. This was my case but luckily the friend who gave me the forks was finally able to find the brakes.


Wouldn`t a 748 rear shock fit better, since the reservoir goes down on  an angle where as the 749 comes straight out requiring removal of the breather and regulator moved? I was going to try this. According to Ohlins USA chart, the monster and 748 shock as are both 305 mm length. If re-sprung to the correct spring wouldn`t this be a better option than a stock monster shock?

[Paegelow]

I just did some research, and it looks like my 695 has 300mm rotors and the 748 had 320mm.  Would that mean my calipers wouldn't work, and I'd need calipers to fit the larger rotors?

[erichan8757]

I just did some research, and it looks like my 695 has 300mm rotors and the 748 had 320mm.  Would that mean my calipers wouldn't work, and I'd need calipers to fit the larger rotors?

an old link ,
but did not see anyone reply,
I am currently embarking on this part.
According to He man and my friend , One have to get a bigger set of
rotors. therefore i just went ahead to put order a set of wave.
My friend had the same set up as my, thought I upgraded my
caliper to 4 piston as well.
but i think the rotor has to go up.

there are many rotors that would fit on  a 620 i think other will come in with
answers.

e.

[He Man]

i said if you go with S2R1k rotors, you need new calipers to match due to the size and offset.

if you ordered new rotors, you should make sure they are the right size and offset for the calipers you are matching them too as well as bolt patter on your wheel. Also, since the brakes are much larger, id also say go ahead and get new masters with it.

Dont forget about brake pads to make sure the ones you have in your new rotor arent old and worn.