If your bike's clutch is binding, one possible cause is a leaky clutch slave cylinder. In most such cases, the clutch slave seals have perished and need replacing. TourMax Clutch Slave Cylinder Seal Kit.
Clutch Slave Cylinder Seals fits Honda VF 750 C Magna 1982-1984
Clutch Slave Cylinder Seals fits Yamaha YZF 1000 R Thunder Ace 1996-2001
Clutch Slave Cylinder Seals fits Suzuki GSX 1400 2002-2007
Clutch Slave Cylinder Seals fits Honda ST 1300 Pan European 2002-2008
Clutch Slave Cylinder Seals fits Honda VFR 800 FI 50th Special Model 1999
Clutch Slave Cylinder Seals fits Honda CB 1000 RA ABS 2008-2010