If you're not looking for chain retention or your bike has an integrated chain guide, you can still add some bash protection with the OneUp ISCG05 Underbash.
The Underbash includes 3 different sizes of bash plate for compatibility with chainrings from 28-36T. Designed for frames with 2 ISCG05 tabs only (Evil, Rocky Mountain, etc). Should not be used on frames with 3 ISCG05 tabs.
•Install without removing your crank
•Single tool install and adjustment
•Stainless Steel hardware
•Includes 3 bash plates (28-30T, 32-34T, 36T)