45mm Diameter Tapered Headset Spacer

[SgtRock]

Hi

I am after a tapered / cone type top 1 1/8" bearing headset spacer for a Cervelo R3 2017. Current spacer bottom outside diameter is 45mm and the standard fit headset is a FSA headset. I have a Cane Creek 20mm taapered spacer I grabed from my LBS parts bin but it is alloy and I would like a carbon spacer. Looking for 15 to 20mm height.

Any suggestions?

Thanks in advance.