Is there a carbon crown option available? No. We achieved comparable weights with better stiffness utilizing an aluminum crown and steerer. Related articles What are the benefits of the new TwistLoc Ultimate remote? Will there be fenders for the SID and SID SL? What is the weight difference between the 2021 and 2024 SID/SID SL models? Will there be ButterCups to take the edge off on marathon rides? Can I buy the TwistLoc Ultimate grip without the remote?