The new X-Carboring EVO BCD 110 DA9200 (4 arms) by the Italian manufacturer Carbon-Ti is specifically developed for Shimano Dura Ace, Ultegra 12 speed cranks and the SRM Origin power meters.

The carbon fiber plates of the outer chainrings have increased in thickness to obtain a higher stiffness index and to make detailed CNC machining possible. The combination of titanium and carbon make the ramps “harpooning” the chain, allowing fast and precise up- and down shifting by either electronic or mechanical groups.

It is recommended to use the X-Cover DA9200. It is a specific kit for Shimano DuraAce 9200 12s cranks and is made up of AL7075-T6 alloy.

Available in several combinations and compatible with Shimano 11- and 12-speed and SRAM 11-speed group sets.

Weight:
X-CarboRing EVO 55t chainring: 134 grams
X-CarboRing EVO 38t chainring: 44 grams
X-cover kit (2 chainrings): 23 grams

Price*:
X-CarboRing EVO 55t chainring: € 275
X-CarboRing EVO 38t chainring: € 186
X-cover kit (2 chainrings): € 38

More information: https://www.carbon-ti.com/products/chainrings/x-carboring-road-chainrings

*Manufacturer price, this could vary by country, pls check your local supplier

Images: Carbon-Ti