Goldix Gxp Bike Mtb Mountain Bike 30t/32t/34t/36t/38t Crown Bicycle Chainring For Sram 11/12s Nx Xx Xo Gx Gxp11 Single Disc T - Bicycle Crank & Chainwheel - AliExpress
New SRAM Force 10-30 cassette splits the difference for finely tuned gear steps - Bikerumor
Amazon.com : Wolf Tooth Components Elliptical Direct Mount Oval Mountain Bike Chainrings for SRAM Cranks (30 Tooth, Drop-Stop A, PowerTrac, Boost, MTB) : Sports & Outdoors