From the manufacturer

The singlespeed kit specifically designed for full-suspension bikes. Reverse Expert Singlespeed kits with sprocket guides keep chains securely in place. Made in Germany.

Features

• Convert an XD driver into a Singlespeed drive with a purpose designed kit for gravity full suspension bikes
• A refined tooth design engages the chain more securely than traditional single speed cogs
• CNC aluminum sprocket guides act like a chain guide for the rear cog, sandwiching the chain in place
• Sprocket guides feature a machined mud-shedding pattern which allows dirt to clear out no matter the riding condition
• Includes cog, alloy lockring, and two sprocket guides
• To ensure chainline compatibility, Expert XD Single Speed kits must be used with Expert Colab Tensioner

Specifications

• Hub: XD
• Teeth: 13
• Chain: 12sp