M9x1.25 titanium crank case bolts
Here’s a thread you don’t see every day, M9 x 1.25. They are crank case bolts, Japanese bike manufacturers seem to have a bit of a penchant for them. The other fastners are race specification, i.e drilled for lockwire and the heads recessed, very tricky operation on bolts this small, there’s not much room for manouvre. The washers and castle nuts are 7075 alloy.