E-Thirteen Helix 12 Speed Race Cassette - XD Driver - Intergalactic - 9-50T - 12 Speed YGroup_7033453740077 Cons: You will need a

Cons: You will need a high volume floor pump to pump it up

the Chain Gauge is a stainless-steel insurance policy against premature drivetrain wear

remove top cap

with optimised spacing to give an even spread of gear ratios reducing the need for double shifting

comfort and versatile shape at a great price

E-Thirteen Helix 12 Speed Race Cassette - XD Driver - Intergalactic - 9-50T - 12 Speed YGroup_7033453740077 Cons: You will need aThe 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