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Description
The Chorus crankset is a true concentrate of technology and versatility.
Technically advanced thanks to unidirectional construction technology in carbon fiber, it is produced directly molded without any surface coating and has an Ultra-Torque steel axle like the Record crankset.
It is versatile thanks to its new ring of 123 mm bolts that, while giving it an extreme-performance structure, also ensures a wider variety of use segments.
Available with 165, 170, 172.5 and 175 mm cranks, the new smaller ring of bolts on the Chorus crankset makes it compatible with 52/36, 50/34 chainrings and with the brand new 48/32 crowns.
Technologies
- Ultra-Torque axle with Hirth coupling.
Features and Benefits
- The Q Factor remains the same (145.5): The widths and biodynamics of the stroke are the same.
- Unidirectional carbon fibre cranks, steel axle and aluminium chainrings: Good stiffness and optimum power transmission.
- Symmetrical teeth on the internal chainring: Fluid, precise transmission, even with extreme cross-chaining.
- Optimised design for any chainring combination: Maximum performance, whatever the course style.
- Double Fixing: Assembly of the large chainring on to the crank is secured by a ring of 123mm bolts, while the inner chainring is attached to the outer by way of 96mm pcd bolts.
- Surface treatment of the chainrings for longer life
- Weight - 718g for 172.5mm 34/50 option.
32-48 FC20-CH12028
34-50 FC20-CH12040
36-52 FC20-CH12062
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