Build a 12-speed Di2 Time Trial / Triathlon bike
Building a 12-speed Di2 Time Trial (TT) or Triathlon bike isn't as straightforward as you might think. What components can you use, and how do you connect them?
Time Trial/Triathlon Dual Control Lever
DURA-ACE ST-9071
Each shifter has two buttons, and they're not 12-speed compatible. If you want to build a 12-speed time trial bike, please read the building a 12-speed TT bike guide.
These shifters are compatible with carbon fiber handlebars (but only with aluminum inserts where the brake levers are installed) or aluminum handlebars. The handle inner diameter is 19.0 – 22.5mm.
Specifications
- Model code: ST-9071
- Series: DURA-ACE (9070)
- Weight: 64g (per lever)
- Speeds: 10 / 11
- Number of switches: 2
- SD50 ports: 1
- Reach adjust: Yes
- Brake type: Rim
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