Helix R 12 is 60g Lighter than the TRS+ 9-50t 12 speed, and the Helix R 11 is 80g lighter than the TRS+ 9-46t 11 speed.
Available in colors: Grey, Naranja, Bronze, and Eggplant, and Intergalactic (uses ‘PVD Film’ to double the durability compared to anodize)
Compatible with SRAM and Shimano 12speed drivetrains
Improved shifting performance including ShimanoTM 12 speed compatibility
Improved interface between steel and aluminum clusters
If you happen to wear out the aluminum portion or steel portion, you can replace just the worn part since they’re also sold separately.
Works flawlessly with Shimano and SRAM 12s drivetrains despite the challenges in designing for the different cog spacing and chain behavior. Additionally, if your wheel has a SRAM XD Driver and you want to upgrade to Shimano 12s, you not only save money on the cassette, you don’t have to spend the extra on a new hub driver either. -e.thirteen