Yep, that GS1100 swingarm again

Just got my GS1100 swingarm, time to get her up on the table now! And the guy threw in some pretty nice Magura levers he had laying around as well. Lots of plans and little money, but will keep posted what I do to my old school. Anybody got any good useful tips on this swap I'm listening. Later kzr members.

Gday

I am in the process of doing the same thing to my kz900 just gathering parts converting over to rear disk so getting that stuff

read this thread pg3 a good hint on wheel spacers

www.ksrc-au.com/phpBB3/viewtopic.php?f=3...f605292d0c9&start=30

also search BohicaBob he has been really helpful under his signature he has a link to z900 stage two with heaps of pictures.

post some pics as you will be ahead of me on this one. BTW what tyre are you going to run? im thinking 160

cheers Jason

Hello Jason, thanks for the info. I'm still waiting to find some GOOD goldwing shocks for a GOOD price, anyone.....?


And as far as tire size? I WANTED to go 160, but I keep seeing so many different answers to this question??? I know it had some to do with rim size as well. I'm running a 18" rear wheel, but it's wider than stock, by how much, I don't know?? But I think I'm going with the Avon Roadriders. 150 out back, and 90-90-19 up front.



If anyone else out there can answer this tire thing for sure, would help.

BohicaBob runs a 160 seach bohicabob it look sick with the 160

My novice understanding is that you will need a 4.25 - 4.5 inch rim for 160 tyre. You will probably need a 530 chain and spacers also

can any of you point me to the right direction for info on doing this swap? have a 79 Kz 750. would like to stretch the swing arm some and really would like to find a way to go with front and rear disk on it

You should consider a number of things before proceeding. I'll use my Z1-900 as an example. Years ago I upgraded the stock spoked wire wheels to DID alloy rims and SS spokes/nipples, a 2.15" x 19" front and a 3.00" X 18" rear on the reinforced but stock swingarm. Handling improved as I changed the front fork damper rods to later model KZ900's along with Progressive front springs and Progressive rear shocks. So the stock geometry was not significantly changed from stock if at all by the changes. I braced the frame a long time ago by the way.

In 2006, I replaced the DID alloy wheels with wider 17" Excel alloy wheels wide enough (3.5" and 4.25") to support the use of radial tires, and added a GS1100 swingarm and a rear disc brake setup. Here I had to consider how this bike's geometry and total height/ground clearance would change along with its handling because of the 17" wheels. I even took into account the actual diameter and width of the Avon AV45 and AV46 tires I wanted to use, the resultant trail changes, wheelbase change (the GS1100 swingarm is longer than the OEM Z1 swingarm) etc. I missed one important item that surfaced with use of 17" wheels and OEM KZ1000 front and rear calipers: I will spare you the details for the moment.

BohicaBob wrote: You should consider a number of things before proceeding. I'll use my Z1-900 as an example. Years ago I upgraded the stock spoked wire wheels to DID alloy rims and SS spokes/nipples, a 2.15" x 19" front and a 3.00" X 18" rear on the reinforced but stock swingarm. Handling improved as I changed the front fork damper rods to later model KZ900's along with Progressive front springs and Progressive rear shocks. So the stock geometry was not significantly changed from stock if at all by the changes. I braced the frame a long time ago by the way.

In 2006, I replaced the DID alloy wheels with wider 17" Excel alloy wheels wide enough (3.5" and 4.25") to support the use of radial tires, and added a GS1100 swingarm and a rear disc brake setup. Here I had to consider how this bike's geometry and total height/ground clearance would change along with its handling because of the 17" wheels. I even took into account the actual diameter and width of the Avon AV45 and AV46 tires I wanted to use, the resultant trail changes, wheelbase change (the GS1100 swingarm is longer than the OEM Z1 swingarm) etc. I missed one important item that surfaced with use of 17" wheels and OEM KZ1000 front and rear calipers: I will spare you the details for the moment.

im sure i can figure those out ,

i did find out this dose have front and rear disk, dual up front.
so that at least makes me feel some what better. how ever still would not mind finding something to do with the swing arm to make it a bit more stable and also help the performance on it. not looking for a drag bike, but like that look.

What are my options for changing the rear brake caliper? Something smaller, lighter, and better looking is what I'm after. But I would like to keep my 18in rear wheel, stock style brake stay (or not), and stock replacement rotor?


If anyone has pix of the gs1100 swingarm with upgraded brakes, I would love to see them.

Checkout "Z1-900 Stage II" in my signature.

ok i have noticed several folks here have a M/C on their bikes, can anyone point me in a direction to find witch one will fit the 79 KZ 750's?
im all for stopping power!!
also wondering how wide of a tire can be put on them with the stock mag wheels

Alright, FINALLY got started on this swingarm swap.... This is not gonna be a fast project by any means, I plan on slowly but surely doing a little at a time and end up with big results by next spring, including rearsets, triples, progressive springs in the forks, dual disc brakes, changing handle bars, and a few other things.

Now, my gs swingarm is missing one of the pin bearing spacers and the end caps from the pivot bolt!
ANYONE have these things or know the best place to locate them? Shocks will be ordered next week, and I still need SS washers to take up the space between the frame and the arm at the pivot location. Looks like I'm gonna need an offset front sprocket also?

Last time I checked they were still available from Suzuki.