Career
At the 2011 European Championships Kaykov took bronze with the Russian team in the team pursuit. He also took silver with Artur Ershov in the madison event. Kaykov joined pro continental team RusVelo in 2012.
His best result of the season was in the time trail at Russian Championships where he came 3rd, only beaten by Denis Menchov and Dimitry Sokolov.
Kaykov tested positive for the black market drug GW501516 in an out-of-competition control on 17 March 2013, and was subsequently handed a two-year ban from sports. He was also sacked by RusVelo.