There are times when the simplest solution is the best one. In the case of the OG 1090 cassette, simple also means elegance, efficiency, and performance. Traditionally a cassette is made up of many parts and SRAM re-engineered it.

The main cogset is machined out of a single forged form that is hollow, then 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 have been designed with SRAM´s proprietary OpenGlide^TM design for smooth as silk up and downshifts. OpenGlide features a precise location for a single tooth on each cog to be "open" making shifts quick and smooth. Weight, stiffness and strength wise, the radical OG 1090 cassette delivers titanium´s desirable weight, with solid steel´s superior strength and stiffness.

OpenGlide Technology ^TM

Revolutionary design

Sprockets on Spider 3

Lock Ring Material: Aluminum Anodized

Smooth shifting

10 speed

Cogs: 26T,23T

Weight 160 grams