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The Series One was our first frame when we started FIT back in 2000 and it’s our most popular bike to date. For 2026 we’ve upgraded to a CNC machined Integrated headtube and a fully sealed bearing front hub. T
SERIES ONE (20.75”)
TT SIZE: 20.75”
FRAME: Cro-Mo Front Tri
GEOMETRY: Series One
HEADSET: Integrated w/Gyro Holes
BB: Sealed Mid
BARS: 2-Piece 9” x 29”
FORK: Cro-Mo Steerer, 33mm Offset, Welded Insert
STEM: FIT Top Load
SEAT: More Padded Integrated Combo, 200mm Post
CRANKS: Tubular Cro-Mo 170mm
SPROCKET: FIT Key 25T
PEDALS: FIT PC
FRONT WHEEL: FIT S1W Rim w/Sealed Hub
REAR WHEEL: FIT S1W Rim w/Sealed 9T Cassette
TIRES: FIT OEM 2.4”
BRAKES: U-Brake w/Low Tension Springs, Two Finger Lever, Linear
MISC: Sealed Front Hub/ Integrated HT New for 2026
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