This is a used Cervélo S3 bike, size 54 cm. It has been used for both racing and training. Specs are listed below. Frame: Cervelo S3 disc brake 54cmBars: Cervelo carbon 40cmStem: Cervelo integrated 110cmShifters: SRAM Red AXS Fd: SRAM Red AXS Rd: SRAM Red AXS max 33tChain: SRAM Red AXSCassette: SRAM Force AXS 10-28Crankarms: Quarq 170mmPower meter: SRAM Red Quarq 50/37Wheels: ZIPP 454 Tubular rims laced to ZIPP 76/176 hubsTires: Vittoria Corsa Pro Tubular Saddle: Fizik ArionePedals, computer mount not included.