Amazon.com : JGbike ~180g Lightweight 11 Speed Single Piece Cassette for Road Gravel cyclecross Bike, for Shimano Dura Ace Ultegra or SRAM Red Force for Triathlon - The Best Value Cassette Available :
Project Disc Cross: SRAM Red Hydro R WiFLi groupset - Long-term test - Bikerumor
Weight Comparison between Shimano Ultegra and SRAM Red 22 11-32T Cassettes - YouTube
SRAM Appeases Weight Weenies and Retrogrouches with New WiFLi XG1190 Cassettes, Barcon Shifters - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media