Ethirteen Helix Sram XD Cassette 12s 9-50T S3-Size-18x2.5mm Read more about the EQ

Read more about the EQ air spring below

it became clear that we wanted extra rigidity

even during tense competition or due to tiredness

Cold Forged

Ethirteen Helix Sram XD Cassette 12s 9-50T S3-Size-18x2.5mm Read more about the EQe*thirteen Helix Race Cassette 12s 9 50T Eggplant Purple Suitable for Dram XD and XDR drivers Helix Race 12 speed, 556% Range, 384g More Range, Less Weight The HELIX Race Cassette is an upgrade to any SRAM Eagle drivetrain*, with more range than any other cassette on the market. The 9 tooth cog lets you step down one chainring size while keeping the same top end gearing and provides not only better ground clearance, but an overall lighter drivetrain.