Description
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. The S1 frame and fork has been lightened up and offered in 3 top tube sizes with corresponding handlebar and crank sizes.
Find other toptube sizes and color options here:
| Toptube Size | Rider Height | Color | |
|---|---|---|---|
| 20.75" | 5'6" - 6' | Black | |
| 20.75" | 5'6" - 6' | Cream | |
| 20.5" | 5'4" - 5'8" | Smoke Chrome | |
| 20.25" | 5'2" - 5'6" | Blood Red |
Specifications:
- Frame: Chromoly front triangle (20.75" TT)
- Fork: Chromoly steerer tube, welded insert (33mm offset)
- Headset: Integrated, sealed
- Stem: Fit top load
- Bars: 2-piece (9" rise) (29" width)
- Grips: -
- Cranks: Tubular 3-piece chromoly (170mm length)
- Bottom Bracket: Mid, sealed
- Pedals: Fit PC
- Sprocket: Fit Key (25T)
- Chain: -
- Front Hub: Sealed bearings, female axle
- Rear Hub: Sealed cassette
- Driver: 9T
- Front Rim: Fit S1W
- Rear Rim: Fit S1W
- Front Tire: Fit OEM (20 x 2.4")
- Rear Tire: Fit OEM (20 x 2.4")
- Seat: Padded seat/post combo
- Seat Post: Alloy (200mm)
- Seat Clamp: -
- Brake Lever: Two-finger lever
- Brakes: U-brake with low-tension spring, linear cable
- Gyro: -
- Gyro Tabs: Drilled (Not included)
- Brake Mounts: -
- Extras: -
- Color: Cream
- Weight: -
Geometry:
- Toptube Length: 20.75"
- Chainstay Length: 13.11"
- Headtube Angle: 75.5°
- Seattube Angle: 71°
- Bottom Bracket Height: 11.8"
- Standover: 8.8"
- Recommended Sizing Guide: 5'6" - 6'
SKU: 29-T1-SO-L-B
SKU: 29-T1-SO-L-C
SKU: 29-T1-SO-M-C
SKU: 29-T1-SO-S-R
All bikes purchased through Sgvbicycles MUST be assembled by a certified bike shop mechanic. If the bike is NOT built by a certified bike shop mechanic, any warranty will be VOID. We will request for an assembly receipt as proof of professional installation.
