E*Thirteen Mountain Cassettes, Cogs, Freewheels, & Lockrings/Spacers

gears, the Box Three Prime 9 Groupset takes a different approach. The engineers at Box decided that sometimes simple is better so they developed a groupset with a wide ratio range over ...

Shimano/SRAM 8-speed cassettes. SHIFT-9U

Shimano/SRAM cassettes up to 11 speeds. These cassette lockrings hold your cassette securely while adding a pop of color to your bike.

Shimano/SRAM cassettes up to 11 speeds. These cassette lockrings hold your cassette securely while adding a pop of color to your bike.

retention and more precise shifting performance over the M9100. This cassette is built with a Beam Spider construction that strategically places aluminum, titanium, and steel materials for an optimal blend of weight ...