Yamaha M6x20mm Titanium Disc Bolt
Made fromAerospace grade Ti alloy 6Al-4V CnC machined with rolled thread to produce better fatigue resistance and avoid gallling
M6x20mm Long Thread with Conical Head
8mm Dia Shoulder
5mm Allen Key fitting
 
To fit models
MT03
XP500
TMAX
XJ6 Diversion
YZF R6
FZ6
FZ8
YZF R1
YZF R1M
FZ1
XJR1300 2004 onwards
MT09
 
And many other models.
Yamaha use three different types of disc bolt, check your model fitment are M6