e*thirteen Helix R Cassette 9DH228 as the Alpha you get

as the Alpha you get to give out different levels of audible tone or vibration command

Unlike standard pumps

98 inch (2270*540*25 mm)

Suction Power: 25W/50W Max 100W

(Exclude Parallel Cables and Parallel Connectors)

e*thirteen Helix R Cassette 9DH228 as the Alpha you getThe HELIX R Cassette is an upgrade to any SRAM Eagle or Shimano drivetrain, with more range than other cassettes 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. 1 aluminum cogs, 10 steel cogs Designed for use with XD and XDR drivers only