The E-Thirteen Helix Plus 12V 9-50T Cassette we’re featuring at Escapa is one of the most versatile and advanced cassettes on the market. With a massive 556% gear range, it outperforms most Shimano and SRAM options, allowing you to use a smaller chainring without sacrificing top speed while improving ground clearance and reducing the overall weight of the drivetrain.
Its two-piece design (steel body + aluminum spider) reduces weight, facilitates separate replacement, and improves durability, even in e-MTB use. Additionally, it is compatible with Shimano and SRAM 12-speed drivetrains, maintaining smooth and precise shifting on any terrain.
Key Features
Spectacular 556% gear range thanks to the 9–50T setup.
Compatible with 12-speed SRAM, Shimano, and TRP (same number of gears and equivalent cage).
2-piece design: 10 steel chainrings, 2 replaceable large aluminum chainrings
Suitable for E-Bikes (e*spec).
Compatible only with SRAM XD / XDR freehub bodies (includes spacer for XDR).
Allows for mounting a chainring 2 teeth smaller without losing maximum gear range.
