A Perfect Match
Our cassette teeth are designed to work perfectly together with our chain profiles. In addition to increasing durability, efficient cassette tooth and chain engagement reduces friction for an ultimate shifting experience.
Flow Control
Each REACT Cassette utilizes carefully crafted shifting ramps to control chain flow. The unique lifting-ramp design carries the chain smoothly upward on the cog while the distinctive lowering-ramps adeptly align the chain quickly. Both result in improved shifting performance and overall component interaction efficiency and stability.
The Perfect Gear For Every Cadence
Gradually increasing the cog sizes allow for smoother shifting and precise chain indexing. With no major jumps in tooth count from consecutive cogs your shifts become more predictable and intuitive in every riding situation.