CY and Zenoah Engines Team FastEddy Ceramic engine bearing set. Used by several of the top engine builders in the industry. Includes Set of two (2) open crank high performance engine bearings. 440C stainless steel bearing material, ceramic Si3N4 (silicon nitride) rolling element material.. Rated to 35,000+ RPM. Fits G23LH / G230RC / G260RC / G260PU / G260PUH / G231PUH / G231PUM / G260PUM / GZ25N14 / GZ25N23 engines. Also fits Chung Yang CY23RC / CY26RC / CY27RC / CY29RC / GP290 engines. A word on Fast Eddy. TGN is an official distributor for Team Fast Eddy Product. Look for more and more quality products with a unique twist from Team Fast Eddy.