Seat: MACNEIL S.L. SEAT ANIMAL "ALL DAY" SEAT POST KINK TRIM SEAT CLAMP Stem/Bars/Headset MACNEIL LIGHTER BARS - 5 degree sweep KINK RELIEF STEM KINK INTEGRATED HEADSET Frame/Fork/Cranks: ODYSSEY DIRECTOR FORK(3/8") FIT SERIES 3 FRAME -20.5" / Black / Mid PROFILE 3 PIECE CRANKS -w/ euro bottom bracket Black 170mm RHD (right hand drive) Regular chromoly spindle Wheels-Hubs: FLY BIKES RIM(Black / 36 / cross lace) PRIMO FORGED SPOKES & NIPPLES TO FIT MOST HUB / RIM COMBOS (50 PC.) KHE Premium Folding Kevlar Park Tire(20 x 1.95) Drivetrain+Hubs: TREE BIKE CO. LITE SPROCKET (SPLINE DRIVE) -25 tooth / Black SHADOW CONSPIRICY V.2 INTERLOCK CHAIN KHE REVERSE FREECOASTER HUB -RHD / 36 / Black / 9t PRIMO PRO LOW FLANGE FRONT HUB Brakes: DEMOLITION VULCAN BRAKE ODYSSEY MONOLEVER LEVER (MEDIUM) Misc: ANIMAL "STEVEN HAMILTON" PEDALS ANIMAL EDWIN DELAROSA GRIPS *how do i tell if the drive train is compatible?* will any sprocket work with any hub or w.e...? whats the difference between all these teeth and number of sprocket things and what not? do some make it easier to ride?