What parts should I get on my bike {read descreption}?

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I have a giant method 00 gold and it weighs 27.00 lbs FLAT . i want it a little lighter what parts should I get for it??

 

[Justin]

well what type of tires do you have are they light weight tires if there not you can get the light weight tires and a light weight seat some light weight handle bars and thats all i think