Hey, As far as a standard tank is concerned, ford covered that.. For the clip ons, I had to go through an Ebay seller who sold them in our sizse, (much larger) you will also need EMGO or equalent headlight ears if you plan to mount them under the top triple tree. Fork tube diameter is 37mm
In my pictures, when the bike is solid red, they are above the trees, and when it is black and red they are below the trees.
Here is a list of all the other bikes with 37mm forks, some of these bikes may have OEM clip ons for cheap Mine were $100 Shipped
Ebay Link:
http://cgi.ebay.com/ebaymotors/KAWASAKI-NINJA-250-R-37mm-clip-ons-handlebars-clipons-_W0QQcmdZViewItemQQhashZitem1c1030125bQQitemZ120530670171QQptZMotorcyclesQ5fPartsQ5fAccessories
37 Honda CR-80R (96-98)
37 Honda CR-80R (99-02)
37 Honda CR-85R (03-04)
37 Honda CR-125R "Elsinore" (79)
37 Honda CR-125R "Elsinore" (79)
37 Honda CR-125R "Elsinore" (80)
37 Honda CR-125R "Elsinore" (80)
37 Honda CR-250R "Elsinore" (78-80)
37 Honda CR-250R "Elsinore" (78-80)
37 Honda NX-250 (88-90)
37 Honda XR-250R (81-82)
37 Honda CMX-450C (86-87)
37 Honda CX-500TC (82)
37 Honda FT-500 "Ascot" (82-83)
37 Honda VF-500C "Magna" (84-85)
37 Honda VT-500C "Shadow" (83-84)
37 Honda VT-500C "Shadow" (85-86)
37 Honda XL-500R (82)
37 Honda CB-550SC (83)
37 Honda CBR-600F "Hurricane" (87-90)
37 Honda CB-650SC "Nighthawk 650" (82)
37 Honda CX-650T "Turbo" (83)
37 Honda VF-700C "Magna" (84)
37 Honda VFR-700F "Interceptor" (86)
37 Honda CB-750F (81-82)
37 Honda VF-750C "V45 Magna" (82-83)
37 Honda VF-750S "Sabre" (82-83)
37 Honda VFR-750F "Interceptor 750" (86)
37 Honda CB-900C "Custom" (80-82)
37 Honda GL-1000/K "Goldwing" (75-79)
37 Honda GL-1000/K "Goldwing" (75-79)
37 Kawasaki EX-500D1-D11 "Ninja 500R" (94-04)
37 Kawasaki ZL-600A1/A2 (86-87)
37 Kawasaki ZX-600A1-A3 "Ninja" (85-87)
37 Kawasaki ZX-750A1-A3 "GPz" (83-85)
37 Kawasaki ZX-750E1/E2 "Turbo" (84-85)
37 Kawasaki ZX-1100A1 "GPz" (83)
37 Kawasaki ZX-1100A2 "GPz" (84)
37 Suzuki RM-85 K2-K4 (02-04)
37 Suzuki XN-85 D "Turbo" (83)
37 Suzuki GS-500 EK/EL/EM/EN/EP/ER/ES/ET (89-96)
37 Suzuki GS-500 EV/EW/EX/EY (97-00)
37 Suzuki GS-550 LD/LF (83, 85)
37 Suzuki GS-550 ED/ESD/ES3/ ESE/ EF/ESF/ESG (83-86)
37 Suzuki GS-650 MD "Katana" (83)
37 Suzuki GS-700 EF/ESF (85)
37 Suzuki VS-700 GLFG/GLEFG/ GLFH/GLEFH "Intruder" (85-87)
37 Suzuki VS-700 GLPG/GLEPG/ GLPH/GLEPH "Intruder" (85-87)
37 Suzuki GS-750 ED/ESD (83)
37 Suzuki GS-750 LN (79)
37 Suzuki GS-750 SD "Katana" (83)
37 Suzuki GS-850 GN/GT/GX/GZ (79-82)
37 Suzuki GS-850 GD (83)
37 Suzuki GS-1000 C/EC/N/EN/ET (78-80)
37 Suzuki GS-1000GT/GLT/GX/GLX (80-81)
37 Suzuki GS-1100 ET/EX/EZ (80-82)
37 Suzuki GS-1100 ED/ESD (83)
37 Suzuki GS-1100 GZ/GLZ (82)
37 Suzuki GS-1100 LT (80)
37 Suzuki GS-1150 ES3/ESE/EF/ESF/EF2/EG/ESG (83-86)
37 Yamaha XJ-650 LK "Seca Turbo" (83)
37 Yamaha XJ-900 RK "Seca" (83)
37 Yamaha XV-920 RH/RJ "Virago" (81-82)
37 Yamaha XJ-1100 J "Maxim" (82)
37 Yamaha XS-1100 E/F/G/H (78-81)
37 Yamaha XS-1100 LG/LH (80-81)
37 Yamaha XS-1100 LG/LH "Midnight Special" (80-81)
37 Yamaha XS-1100 SF (79)
37 Yamaha XS-1100 SF (79)