Tarmac: STI Levers

About time for the Shimano Total Integrated Levers, also known as STI. This post will be a short one. Just the installation of the Dura Ace Levers and the leveling. The cabling will be separated.

These tools are needed:

  • Bike Stand
  • 5mm Allen
  • Torque Wrench
  • Lace/Cord/String
  • Weights
  • Straight Bar/Rod/Level

Official Service Manual:

Service/Spare Part:

  • Shimano Dura Ace ST-R9100
    • I-STR9100PA

Related Post:

Post as guidance? No warranty in ANY case of damage!

As the rest of the team this will be Dura Ace STI Levers. After cleaning the weight check: 370.0 grams

Back on the bike… Just slip the lever from the bar end to its position. Inside the handlebar is a scale for orientation and sizing. The clamp should be in the same position mark on both sides.

I marked my perfect position during the disassembly process. This makes it easier for me during the build-up. As said before this “ReBuild” is just for the BLOG and picturing…

I keep the classic style wile the end of the lever is inline with the drop-end of the bar. It is also straight on looking forward, no drift of something.

To make sure there is a straight line from the bar end to the lever as well as a straight look a level is very handy. It is also possible to mount the wheels and saddle to take a demo seat/grip. This will help you to find the perfect alignment.

Last step is the correct leveling of both levers. With a lace and a sharp eyes this is done in no time.

In the end the tightening of the STI bolt. 6-8NM on both sides.