I have been in contact with Blair at LiteTek ( http://litetek.co ) regarding Viton O Rings for the 400 Katana and he has now added this and also the 250.
I took the time to check the 1100SZ / SD against what he had and you can also get quite a few parts for that in Viton (where appropiate) from him:
13374-44080 (Superseded by: 13374-35C00) – Needle Valve O Ring, part number OR-010 (4 off)
13278-47090 - Choke Plunger O-Ring, part number OR-003 (4 off)
13557-47070 - Throttle Shaft Washer, part number WS-002 (2 off)
13604-44080 - Throttle Shaft Screws - part number SC-001 (8 off)
13651-51010 - Throttle Shaft Seals (8 off) – part number TS-001 (8 off)
If you want these email him the list and he should be able to do. He will add the 1100 once he gets time.
He is also going to produce the Float Bowl Gasket in Viton as well, but says "It takes a very long time to produce new parts, 3 to 5 months".
For other bikes get the part numbers and you can Search on that part number from their Home page to see if they do it but listed for another bike.
There might be a possibily he could do other parts (as he does tank pads etc) as well for no longer available items, but not sure what these might be for our bikes.
Hope that helps.
Rob
