Check out any of the forty-four Transmission components enlisted.
Parts such as the Transmission: Joint Set,chain, Gear,2nd Driven(nt:29), Chain,drive(did428ds,122l), Gear,5th Drive(nt:18) are included in the Rm85 2006 (k6) Usa (e03) Transmission parts fiche.
The Circlip is the cheapest item from this partsfiche.