E-Thirteen Helix 12 Speed Race Cassette - XD Driver - Purple - 9-50T - 12 Speed Heavy/Bulky A downward point noise to

A downward point noise to avoid getting caught on the nose as you move your weight backward

Number of gears: This is an 11-speed cassette

649 710845808272 Bluto A1 - 2015-2018 - Full Service 11

Who's this item for: Kids from 6+ riding bikes that range from 18" - 24" wheels

riders with a sit bone measurement of 100-129mm should choose the 142mm saddle

E-Thirteen Helix 12 Speed Race Cassette - XD Driver - Purple - 9-50T - 12 Speed Heavy/Bulky A downward point noise toThe HELIX R Cassette is an upgrade to any SRAM Eagle or Shimano 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. The improved tooth profile of the Helix cassette's features Shimano 12 speed level shifting performance with the improved reliability of a steel and