H-Series cassettes are designed to deliver maximum durability. With all-steel construction and multi-stage heat treatment, these cassettes will stand up to whatever you can throw at them, whether it’s high torque E-bike usage or just good old-fashioned mashing.

If you know a bike mechanic that’s been around for a while, you may notice that they sometimes get a little nostalgic for 9-speed drivetrains. 9-speed is super versatile, easy to adjust, and tolerant of all kinds of abuse. R9 embodies that versatility and durability. With a wide variety of shifter, derailleur, and cassette options, you can use R9 to set up a road bike almost any way that you want. It also slots in easily as a replacement part if your existing drivetrain wears out or breaks. It’s not fancy, but sometimes normal is exactly what you’re looking for.