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  • Ratio Astrum CSD Frame
  • 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

 
3 Questions : 5 Answers

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3 answers

Fork & Seatpost

Hi CRC,

Does it comes with a fork, seatpost, seat clamp? If not what are the sizes of this individual items?
Age: 25 to 34
Gender: Male
Attitude: Passionate and Obsessive
3 months, 3 weeks ago
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Singapore,SG
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Answer: 
This frame is supplied as frame only; it requires a 31.6mm seatpost and 34.9mm seat clamp. It runs a tapered headtube (51.8/52mm lower, 41mm upper) for a standard 1.1/8" steerer fork.
Age: 25 to 34
Gender: Male
Attitude: Just for Fun
3 months, 2 weeks ago
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Answer: 
The fork, seatpost and seat clamp are not supplied. It comes as a frame only.

(1) For this frame you will require a fork which has a tapered steerer column that is suitable to
asymmetric headsets 1 1/8 – 1 1/2 in size, and has a crown head diameter of 50 mm.

(2) You will require a seatpost which has a diameter of 31.6 mm.

(3) You will require a seat clamp which has a clamping diameter of 34.9mm.
Gender: Male
Attitude: Elite Athlete
2 months, 3 weeks ago
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Answer: 
The frame is supplied only.
You CANNOT use a STANDARD 1 1/8" fork with this frame as stated below in two answers.
You require a fork with a tapered steerer column for use with headsets 1 1/8" to 1 1/2".
You will require a seatpost 31.6mm in diameter and a 34.9mm seat clamp.
Gender: Male
Attitude: Elite Athlete
2 months, 3 weeks ago
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Age: 35 to 44
Gender: Male
Attitude: On the up
3 months, 2 weeks ago
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Roma,IT
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Answer: 
Il telaio é venduto senza forcella e senza reggisella.
Richiede un reggisella da 31.6mm con collarino da 34.9mm. Ha tubo sterzo conico(41mm nella parte superiore e 51.8mm / 52mm nell parte inferiore) e richiede una forcella standard da 1.1/8".
3 months, 2 weeks ago
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1 answer

MISURA TELAIO

Che misura potrebbe andare bene per me..sono alto 184cm, cavallo 91cm..grazie
Age: 35 to 44
Gender: Male
Attitude: On the up
2 months, 1 week ago
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Answer: 
Siamo spiacenti ma non abbiamo una tabella di riferimento per le taglie questo telaio. Puó fare riferimento alla geometria che trova all'interno della "Tabella delle Taglie".
2 months ago
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