MRP 2x Chain Retention System Steel 34-40T ISCG-05 Black. The 2x chain guide provides robust chain retention and chainring protection for 2x10 and 2x9 drivetrains.

Integrated skid protects chainrings and glides over rocks and obstacles

Modular skid saves 40g when removed

Patent-pending dual pulley design provides precise chain engagement while reducing noise and drag

Raised top fin profile prevents the chain from dropping to the BB shell

Compatible with 9 and 10 speed drivetrains