• Ratio Astrum CSD Frame

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Ratio Astrum CSD Frame

RATIO is the result of years of experience exclusively in the cycling field and is the application of innovative materials and technologies important to obtain components competitive performance. Italian design, dynamics studies ergonomics concepts will optimize products performance, their energy and their comfort in order to achieve the best goal for training and competition.

Each components is the result of great passion for cycling.

Ratio Astrum CSD Frame Specifications:

  • Carbon Monocoque Frame CSD Seatpost Design
  • Headset 1 1/8 - 1 1/2 Asymmetric system
  • Integrated 50 mm crown Ø
  • Classic seatpost Ø 31.6 mm
  • Bottom bracket drop: (mm) 68
  • Bottom bracket height: (mm) 267
  • Internal cable routing
  • BB30 bottom bracket shell
  • Carbon drop-out
  • Weight: 1.020 g (S)

Geometry chart can be found here (.PDF).

Buy Ratio Astrum CSD Frame from Chain Reaction Cycles, the worlds largest online bicycle store

  • Delivery costFREE
  • Delivery toUSA
  • 365 Days return or exchange

    If you're not completely satisfied with an item you may return it within 12 months of purchase. We'll give you a full refund if the item hasn't been used or the component hasn’t been fitted.

    More information on returns
  • Pay by PayPal, Bank Transfer or Card


Buying Guide

  • We've got everything you need to know in our buying guide.

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