The Series One was Fitbikeco's first frame back in 2000! It was a straight-forward, clean BMX frame that helped re-define what was necessary and what wasn’t. Twenty-three years later, the Series One is a high-quality complete bike with everything entry level riders need and nothing they don’t. With three Top-Tube sizes and proportional components there’s an S1 for anyone looking for a 20” BMX bike. Responsive but stable geometry, traditional fork off-set, and comfortable 2-pc bars, these bikes work for any style of riding.

Frame: 20.25” tt (small), 20.5” tt (medium), 20.75” tt (large) cro-mo top and down tubes
Geometry: series one 
Headset: a-headset
Bb: sealed mid
Bars: 2-piece 8.7” x 29”
Fork: 33mm offset cr-mo steerer tube
Stem: fit top load
Grips: fit crossfit
Seat: new more padded integrated combo
Cranks: tubular cro-mo 160mm
Sprocket: fit key 25t
Pedals: fit pc
Front wheel: fit s1w w/unsealed hub
Rear wheel: fit s1w w/sealed 9t cassette
Tires: fit oem 2.4”
Brakes: new u-brake w/more tire clearance & softer pull springs
Weight: 11.79 kg