Frame: Urban Single Speed Design, DuraFort, Water Bottle & Fender Mounts
Fork: DuraFort UniChrown w/ Fender Mounts
Headset: Tange 1-1/8” Threadless
Handlebars: 4130 Drop Bar
Stem: 4130 10 Degree Drop
Grips: Cushion Wrap Foam
Brake Lever: Radius 2 Finger Alloy, F & R
Brake(s): Radius Alloy Caliper F & R
Seat: Dawes Super Light
Seat Post: 4130 Straight Post 27.2
Crankset: 3-pc Alloy, Euro Cartridge BB, 42T
Chain: KMC Z410
Pedal: FPD Resin w/ Alloy Cage
Rim: Weinmann CN-520, 36H, Stainless Spokes
Front Hub: High Flange Alloy, 36H, Nutted
Rear Hub: High Flange Fixed/Free Alloy, 36H, Nutted, 16T Freewheel & 15T Fixed Cog
Tires: 700 X 28c
Extras: Front & Rear Fender Mounts, Removable Brake Cable Clips

those are the specs. my question was if i were to upgrade parts on this bike where do u suggest i start. and btw its a single speed and i want it converted to fixed. how does the flip flop hub work (ive read MANY articles but they ust confuse me even more). Im sorry for the extremely vague questions and descriptions but im a newbie and need some help getting adjusted to the SS/FG scene