Stumbled across this list of swingarm pivots widths. No idea where it originated, but thanks to whomever compiled it, and no idea if this list is completely, partially, or not at all correct. Your milage may vary…
Kawasaki’s big fours are the following… 9.25″/235mm swing arm pivot width.
Honda VTR SUPERHAWK (all years) – 165mm
Honda VFR 800 (1998-2001) – 165mm
Honda CBR 929 (2000-2001) – 180mm
Honda CBR 954RR (2002-2003) – 180mm
Honda RC51 SP2 (2002-?) – 180mm
1976 Suzuki GT500 – 185mm
Yamaha XS650 – 190mm
Honda VFR400 – 192mm
Honda MC18 NSR250 – 197mm
Yamaha FZR250 – 200mm
Honda XL600R – 200mm
Yamaha LC RD350 – 200mm
Honda RVF400 – 202mm
Honda NS400R – 205mm
Honda MC21 NSR250 – 205mm
Honda CB400F – 205mm
Suzuki RGV250 – 205mm
Yamaha RZ350 – 205mm
Yamaha YPVS RD350 – 205mm
1986 FZ600 – 215mm (without spacers/covers), – 220mm with spacers/covers
Suzuki Bandit GSF600 – 220mm
1992-1998 Yamaha Seca II – 220mm
1990-1996 Yamaha FZR600 – 220mm
2005 Suzuki GSXR 1000 – 225mm
1976-1982 Kawasaki KZ600 – 225mm
1994-1997 Honda VFR750 – 227mm
2001-2002 Suzuki GSXR1000 – 228mm
Kawasaki Z650/Z750 – 230mm (frame width at pivot)
2004-2005 Suzuki GSXR750 – 230mm (without washers on ends)
Suzuki TL1000S – 232mm
Honda Hawk GT650 – 235mm
Honda RC30 – 235mm
2008 Kawasaki Ninja ZX6R – 235mm
Kawasaki Z900/Z1000 – 235mm (frame width at pivot)
Honda RC30 – 235mm
1999-2002 Suzuki SV650 – 235mm
2006 Suzuki GSR500 – 238mm (w/o spacers)
2003-2009 Suzuki SV650 – 240mm
1998-2007 Yamaha YZF600R – 240mm
1990-1993 Honda VFR750 – 242mm
2005-2006 Kawasaki Ninja ZX6R (636) – 242mm
1987 Kawasaki Ninja ZX750R – 244mm
1987 Yamaha FZ750 – 245mm
2006-2011 Kawasaki Ninja 650R – 245mm
1998-2003 Suzuki Katana GSX600/750F – 245mm
2007 Yamaha YZF-R6 – 248mm
Honda RC45 – 250mm
Sucati SR4S – 255mm
2003 Kawasaki Z1000 – 255mm
MV Agusta F4 – 255mm
Kawasaki ZX10R (Gen 1-3) – 257mm
2002-2005 Yamaha FZ1 – 257mm (20mm pivot bolt)
2001 Yamaha YZF-R1 – 250mm
2003-2006 Yamaha YZF-R1 – 260mm (without caps) – 264mm (with caps)
Triumph 955i – 285mm
BMW K100 – 310mm