The Flap Valve assembly is constructed from several parts from which the Base,cable Guide is the most expensive.
The most reasonably priced component used on the Nsr125r 1989 (k) Finland / Kph Flap Valve is the Bolt,flange,6x16.
With a quantity of two pieces, the Bolt,flange,6x16 is the most used part in the FLAP VALVE diagram.