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). If your bike has three ISCG05 tabs, check with the frame manufacturer to ensure the lower tabs are strong enough for a bash application. Failure to do so could result in frame damage. FEATURES Install without removing your crank Single tool install and adjustment Boost compatible Oval Compatible Stainless Steel hardware Includes 3 bash plates (28-30T, 32-34T, 36T) SPECIFICATIONS: Weight 32-34T: 68g Capacity 28-36T Chainline 2.5mm adjustment Material 7075 AL, Top guide glass reinforced thermoplastic Mount ISCG05 2-Bolt ONLY