Three types are available. Please check the list below closely.
1) Small single link chains as used on R3M for timing and starting, and P5M timing chains.
2) Double link chains as run inside the timing casing on P5/P6/p55/P66 ME engines. Note these are the engines with the separate dynamo and starter motor.
3) Exposed starting chains as used on P5, P55, P6, P66, and R3MC engines. These are the engines with the starting shaft and exposed sprocket at the flywheel end of the engine.