SRAM OG 1090 Cassette

Information from: http://www.sram.com/sram/road/products/sram-og-1090-cassette.

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. Weight, stiffness, and strength-wise, the OG 1090 Cassette delivers titanium’s weight with solid steel’s superior strength and stiffness. Lightweight: Innovative CNC‘d chromoly steel construction. Durable: 35% harder than titanium! Stiff: 15% stronger than its competitor. OpenGlide technology allows for smoother transition between gears.

Specifications

Recommended Group: SRAM Red

Sprocket Material: Heat-Treated Steel

Lock Ring Material: Aluminum Anodized

Recommended Chain: PC 1091R, PC 1091, PC 1071

Speeds: 10

Weight: 155g / 11-23, 166g / 11-26