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[MotorBicycleRacing]

My rear motor mount bolt just snapped!!! Will my local hardware store have the replacement bolts? If so are they 6mm diameter? What's the length? I will remove bolt and take it with me. I just wanna get the knowledge.

6 mm 1.0 pitch, same as the exhaust, intake and most of the side
cover bolts.

Upgrade the front and back motor mount bolts, allen head bolts will work

you are lucky that the stud didn't beak off flush or inside the motor.

NGK B6HS is the middle of the plug heat range.

You could also use an extended nose NGK BP6HS

Jap crap? You wish. The motors and kits are made in China with some
having Japanese bearings.