SRAM X-SYNC 2 12 Speed Direct Mount Chainring - SRAM Direct Mount - 3mm Boost - Round - Black - 32T Virtual Parent These are the 37

These are the 37

Sealed cartridges

Still utilising SRAM's X-Sync 2 shifting technology

many 2x specific cranks

SRAM X-SYNC 2 12 Speed Direct Mount Chainring - SRAM Direct Mount - 3mm Boost - Round - Black - 32T Virtual Parent These are the 37Since day one, SRAM has been dedicated to providing riders with component options that fit their own individual riding style. It's undeniable that some riders pedaling styles benefit from oval chainrings, so we've engineered the new X SYNC 2 Oval chainrings to give them the advantage they want. They are the only oval option available with our genuine X SYNC 2 teeth profile, so they are the only oval chainrings on the market that are 100 percent