SRAM XX1 Eagle 10-50 Cassette Gold Rapilock The 4th generation model is

The 4th generation model is more slippery and beautiful than ever

Heat and Altitude Acclimation- See how your body is holding up with heat and altitude acclimation

Lube ideal for riding in dry conditions

Fast is light

SRAM XX1 Eagle 10-50 Cassette Gold Rapilock The 4th generation model isthis 12 speed, 10 to 50 tooth cassette offers an optimal 500 percent gear range at a considerably lighter weight than 2x systems. It carries with it the X DOME architecture, which, independent tests have concluded, yields the strongest cassettes on the market. New shifting characteristics improve both, inboard and outboard shifting, as well as chain retention.