Material: Toray 700C full carbon fiber with Alloy braking surface. Product photos. Difference of rim surface. 80x25mm: 820g(+/-15g). 80x21mm: 790g(+/-15g) 80x23mm: 820g(+/-15g). 60x23mm: 740g(+/-15g) 60x25mm: 740g(+/-15g).
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