4x Bicycle Bike Frame Chain stay Protector Chain Guard Bash Guards Rubber ring | eBay
Simple Bike Chain Guard Made From Large Chain Ring : 3 Steps (with Pictures) - Instructables
Amazon.com : RZJZGZ Bike Chainstay Protector, Protect Bike Chain and Seatstays from Scratches, Wear and Chain Friction, Bicycle Frame Chain Silicone Protective Guard Pad for Mountain Bike Road Bike, 8.8" X 2.4" :