Light weight one piece cassette made of CrMo Shimano 11V 11-32T
RECON|ONE-PIECE RACING CASSETTE
First Impressions & Actual Weights: Recon's 161g Titanium 11-Speed Road Cassette - Bikerumor
RECON - New Shimano/Sram 12-25T 11s titanium grey cassette 168g
TryOn Bicycle Shop 特恩 - RECON Single-Piece Aluminum 11-Speed Cassette Features 11-cogs machined from a single piece of aluminum. For lightest weight performance. Color options to meet high-end rider's special requirements. Multi-surface