SRAM Red OG 1090 Cassette 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. SRAM took up the challenge of re-engineering the cassette from a component made up of many parts down to stripped down but exceptionally strong set of cogs that stick firmly to SRAM Reds core principles of light weight, higher efficiency, and maximized technologies. The main cogset of the OG 1090 cassette is machined out of a single forged form that is heat treated and then shaped in a complex series of CNC-guided operations never before seen in this type of application. This is truly a revolutionary design that will take you by surprise with its ingenious simplicity. The sprockets themselves (including two free cogs) have all been designed with SRAMs proprietary OpenGlide design for smooth-as-silk up- and downshifts. Weight, stiffness, and strength-wise, the radical OG 1090 Cassette delivers titaniums desirable weight, with solid steels superior strength and stiffness. Specifications - Speeds: 10
- Weight: 155g / 11-23, 166g / 11-26
- Recommended Chain: PC 1090R, PC 1090, PC 1070
- Lock Ring Material: Aluminum Anodized
- Sprocket Material: Heat-Treated Steel
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