e*thirteen Helix Race 12-Speed 9-50T Cassette - Grey KIDS Temp range: -10°C to 70°C

Temp range: -10°C to 70°C (-14°F to 158°F)

it has plenty of room for all of the essentials for your everyday city riding or for your shorter tours

Proxy’s performance delivers across off-road disciplines

Despite a reduced thickness

e*thirteen Helix Race 12-Speed 9-50T Cassette - Grey KIDS Temp range: -10°C to 70°CThe HELIX Race Cassette is an upgrade to any SRAM Eagle or Shimano shifter and derailluer combination*, 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. Features Compatible with SRAM, Shimano and TRP shifters and derailleurs of the same gearing count and similar cage