We took the standard cassette and turned it inside out! There are times when the simplest solution is the best one In the case of the new OG 1090 Cassette, simplicity also means elegance, efficiency, and performance. The main cogset of the OG 1090 cassette is machined out of a single forged form that is heat treated & then shaped in a complex series of CNC-guided operations never before seen in this type of application. The sprockets themselves have all been designed with SRAM's proprietary OpenGlide design for smooth-as-silk up- & downshifts Weight, stiffness & strength-wise, the OG 1090 Cassette delivers titanium's desirable weight, with steel's superior strength.
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