An extremely light race day cassette that utilizes 9 Titanium cogs and one steel cog, the larger cogs being incorporated on an aluminum spider. Ideal for those looking to shave a few grams off of their race wheelset. Cassette comes with a titanium nitride coating for increased wear life and durability. Machined tooth profiles improve shift speed and accuracy. Includes gold anodized aluminum lockring. Care must be taken when using the titanium 10 speed Recon cassette. Shifting under intense load can lead to chipped or broken cassette teeth.