The key position bolt of the engine include connecting rod, crankshaft, main bearing, cylinder head, flywheel and shock absorber bolt, all of which belong to bolt fastening.

Magneto is the key component of motorcycle and supplies the power for ignition system, also act as flywheel by connecting with the crankshaft of motorcycle.

Brushless DC motor (BLDCM) as the key component of the flywheel, providing the power for rotor of magnetically suspend flywheel (MSFW) rotating, conducted its reliability.