This causes the hormone insulin to spike

A PU-laminated toecap and side reinforcements add further protection and durability

The unique properties efficiently breakdown grease and allow for simple cleansing of bottom brackets

Both the carbon rim and carbon hub are lighter than previous generations of Dura-Ace

SRAM Red XG-1290 12 Speed Cassette Size:10-33T This causes the hormone insulinThe workhorse of X Range gearing. The SRAM RED XG 1290 cassette progresses fluidly and quickly through a wider range of gears. It's specifically designed for wireless electronic shifting and the one piece design offers you the best in weight savings.