Ratio Cage & Ratchet Kit converts SRAM 1x11 to 12 speed & Eagle - Bikerumor
Campagnolo Record 12 Speed Road Bike Groupset 8 Pieces Crankset Shifter Cassette | eBay
SENSAH 12 Speed Road Bike Shift Kit Front Rear Derailleur ShiftER Chain Flywheel | eBay
SENSAH 2*12 Speed Carbon Fiber Road Bike Shifter Lever Rear Derailleur
Amazon.com : SENSAH EMPIRE Pro GS STI Road Bike Shifters 11/12 Speeds Road Bike Shifters with Shift Cable,Double Speed Lever Brake Bicycle Derailleur Groupset Road Bike Speed Lever (EMPIRE 2X11(aluminium)) : Sports