In the shimano
cs-7900 dura ace cassette, the four largest sprockets are made of titanium to
reduce weight and increase stiffness. The two lightweight metal carrier stars
also reduce weight and offer high torsional strength. You can also use the
cs-7900 cassette on 11-speed road freewheels if you additionally use a 1.85
mm spacer. For 8 to 10-speed road/mtb freewheels, the 1 mm spacer supplied is
sufficient. Gradation: 12-13-14-15-16-17-19-21-23-25 T |
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