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.

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Specifications:

Speeds -- 10

Recommended Chain -- PC1091R, PC 1090, PC 1070

Sprockets on Spider -- 3

Lock Ring Material -- Aluminum Anodized

Sprocket Material -- Heat Treated Steel

Cogs -- 26T, 23T

Sizes -- 11-23, 11-26

Weight -- 160gms


Manufacturer Part Number: 00.2415.019