Since the introduction of SRAM's much lauded Red 22 group a few years back, it only makes sense that the performance obsessed folks at SRAM have incorporated their 22 speed design to their workhorse groups, such as SRAM's Rival 22. As such, the SRAM Rival 22 BB30 Crankset features trickled down technologies of SRAM's top tier Red and XX cranksets, such as X GlideR Chainrings with incredibly stiff CNC machined 7075 T6 aluminum for precise, near instantaneous shifts. And though the Rival 22 Crankset uses aluminum arms and a machined alloy spider instead of the carbon found on its flagship brethren, you'll still reap the benefits of a super stiff pedaling platform for high levels of power transfer. The Rival 22 BB30 Crankset fits frames equipped with BB30 bottom bracket interfaces. It's compatible with SRAM's RED 22, Force 22, and Rival 22 Yaw front derailleurs and works best with SRAM's PC 1130 chain. Note that it comes in three chainring sizes, with 4636, 5034, and 5236 tooth options to suit your particular needs.