pengen upgrade polygon broadway warisan kakak ane ni..

speknya masi standar.

Spesifikasi :
Frame : ALUTECH W/ KS-260 REAR SHOCK
Fork SUNTOUR M2025
Handlebar : POLYGON XSR
Stem : POLYGON TSF
Headset : FSA TH-888
Saddle : FOMING
Seatpost : POLYGON
Rotor : N/A
Chainwheel : PROWHEEL MA-S843 42×34x24T
Chain : KMC Z50
Cassette Sprocket : SHIMANO TOURNEY
Shifting Lever : SHIMANO TOURNEY
Brake Lever : PROMAX
Front Derailleur : SHIMANO TOURNEY
Rear Derailleur : SHIMANO TOURNEY
Front Brake : ALLOY V-BRAKE
Rear Brake : ALLOY V-BRAKE
Disc Brake Rotor : N/A
Pedal : XERAMA PEDAL
Tyre : KENDA 26 x 1.95”
Rim : ALLOY RIM – SINGLE WALL
Spoke : STEEL
Front Hub : JOYTECH STEEL 36H
Rear Hub : JOYTECH STEEL 36H
Size : 16.5”

bagusnya part apa yang di upgrade beserta kira2 harganya ya..
soalnya rute ane muter kampus dengan relief yang agak menanjak & menurun..

terimakasi para agan suhu sekalian..