These chainrings from KMC are suitable for Bosch 3rd generation motors. Guaranteed to last a minimum of 3500km, combining these with KMC's E chains to extend the life of your chain and chainring even further. Longer lasting, quality material and unparalleled gear changes.

**Features**

* Treatment: Hardened Chromoly steel
* High efficiency, saves battery
* Extreme durability, highest precision
* Simple conversion
* Perfectly matched with KMC Chains

**Tech Specs**

* Size: 1/2" X 11/128"
* Colour: Black
* Treatment: Hardened Chromoly steel
* For Bosch 3 systems
* Direct Mount; 3mm offset
* E1, E12, E11, E10, E9 & E8 chains