Recently picked up a used Cervelo P2 (2018 model year) as a “reward” for completing my first 70.3 and to train with for my next one (maybe La Quinta??) and I LOVE it. It’s my first carbon bike and first bike with a really nice drivetrain. One gripe though was the lack of a second bottle cage mount!

So after examining my options I saw a Cervelo brand part that uses the saddle rail system - unfortunately it was sold out. So I made my own!

It’s a fully custom design using PC-CF filament and heat-set threaded nuts for the cage mount. It’s printed diagonally on the bottom corner so the layers intersect the 10mm aluminum rods across both directions . There is one vertically for strength and one horizontally that also is used to mount it to the seat post. It is incredibly sturdy and very light!

You can see my first iteration using two cages, which was less than successful. It fit, but it was just epoxy holding it straight, And putting a bottle in it would torque it and crack the epoxy.…