Frame: Aolly lightweight aluminum frame
driver: lightweight aluminum rider
leading riser: high carbon steel folding riser
seat tube: lightweight aluminum seat tube
cushion: Advanced streamline sports car cushion
foot: semi-aluminum folding pedal
lever: the the Japanese Shimano EF-51 upper and lower positioning brake becomes unity
variable: Japan Shimano FD-TX51 transmission
after the change: Japan Shimano RD-TX35 transmission
flywheel: senior eight dedicated flywheel 13-30T
chainring: lightweight aluminum
the clip: alloy 48T/38T/28T market lightweight aluminum V clip
-ray tube: advanced color line pipe
Wheels: lightweight alloy wheels
tires: Taiwan INNOVA sports car color tires

cost: 450SGD

upgraded.

2nd hand Dahon comp wheels with 11-32T cassette (90SGD)
2nd hand Suntour folding pedals. (10SGD)

planning to upgrade:

suntour swing sw s 20 suspension fork(new)
better crankset. (new/2nd hand)