The Series One was the first frame when Fit started back in 2000 and its been their most popular bike to date.

Ever improving and updating for 2026 the Series One gets an upgraded CNC machined Integrated headtube and a fully sealed bearing front hub. The S1 frame and fork have also been lightened up and offered in 3 top tube sizes with corresponding handlebar and crank sizes.

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Product Specs

1. FRAME MATERIAL: Chromoly Front Triangle
2. WHEEL SIZE: 20″
3. TOP TUBE LENGTH: 20.25″
4. CHAIN STAY LENGTH:
5. HEADTUBE ANGLE:
6. SEAT TUBE ANGLE:
7. FORKS: Chromoly Steerer Tube and Hi-Ten Legs
8. BARS:
   – MATERIAL: Chromoly
   – TYPE: 2-Piece
   – RISE: 8.7″ Rise
   – WIDTH: 29″ Width
9. STEM: Alloy Top Load
10. HEADSET: Integrated
11. BRAKE MOUNTS: Welded Mount
12. BRAKES: U-Brake
13. FRONT HUB: Sealed
14. FRONT RIM: Single Wall
15. REAR HUB: 10mm Sealed Cassette
16. REAR RIM: Single Wall
17. TYRES: 2.4″
18. SPROCKET: 25T
19. CRANKS:
    – MATERIAL: Chromoly
    – TYPE:
    – ARM LENGTH: 160mm
20. BB: 19mm Mid
21. PEDALS: Nylon/Fiberglass
22. SEAT: Combo Seat/Post
23. GEARING: 25/9
24. WEIGHT: TBC

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Product Highlights

• Full Size Bike with a Shorter Top Tube and geometry to Suit riders who are 4ft – 5ft 4″ / 120cm -160cm
• A great all rounder suitable for any type of riding
• Built strong and lightweight
• Includes sealed bearings
• Great spec for a BMX in this price bracket

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