Cervelo ST31 Stem

The ST31 Carbon Stem is compatible with Cervelo's renowned Caledonia 5 and the new R5 and features a clean, sleek design for aerodynamic gains. This stem is designed with the same top-tier carbon we've come to be familiar with when it comes to Cervelo, and it offers a super-stiff hold and lightweight construction. It fully integrates with Di2 wiring and the faceplate works with Cervelo's BarFly system for easy mounting.

• A stiff and light aerodynamic stem for speeding across the tarmac
• Unidirectional carbon is stiff and durable enough for our rides
• A contoured shape creates wind-slicing freedom and reduced drag
• Integrated top cap prevents wind catching for a seamless fit

First, you'll get 10% in store credit to use towards future purchases.

Our prices match the prices you might see on any brand's website, and our delivery times are roughly the same as theirs.

Also, when you purchase through us, you get:

• Advice on whether the bike or product suits your needs.
• A professional build for all bikes, which ensures safety. If there is an issue, we can promise you that 99 out of 100 times, it will be resolved quicker than you can in your garage.
• A build history that becomes a service history, ideally. That can be very helpful if you do have any sort of warranty issue.
• Warranty support - Just contact us and we will guide you through the process.