Ultegra Di2 12-speed STI lever for rim brakes - precise & race-ready.
The Shimano Ultegra ST-R8150 is an electronic brake/shift lever (STI) for 2x12-speed Di2 road bike drivetrains, specifically designed for rim brakes. It combines fast, intuitive shifting with direct and controlled braking performance.
The clearly defined click feel ensures precise gear changes even under load. The optimized ergonomics with textured surface improve grip and power transfer - ideal for racing and ambitious training.
Using the E-Tube Project App, shifting modes (Full-/Semi-Synchro-Shift), Multi-Shift, and button assignments can be individually configured. Two EW-SD300 ports enable connection to the battery (BT-DN300) and optional auxiliary switches.
Highlights:
- Di2 2x12-speed: fast & precise shifting.
- Rim brake version: lightweight & classic.
- Synchro-Shift compatible: Full & Semi.
- Ergonomic design: improved grip.
- Reach adjustment: individual customization.
Technical specifications:
- Manufacturer: Shimano
- Series: Ultegra R8100 Di2
- Model: ST-R8150
- Position: Right (R)
- Brake type: Rim brake
- Shifting system: Di2, 2x12-speed
- Ports: 2x EW-SD300
- Lever material: Aluminum
- Housing: GFRP
- Weight: approx. 295 g (pair, manufacturer's specification)
Scope of delivery:
- 1x Shimano Ultegra ST-R8150 Di2 STI Right | for rim brakes | 12-speed
- Note: Workshop packaging (without outer packaging)
Manufacturer's item no.: ISTR8150R | EAN: 4550170889845
“Precise shifting on the road bike - the Ultegra Di2 shifter ensures instant and crisp gear changes!”
SKU: N2A2
Shimano Ultegra ST-R8150 Di2 STI right | for rim brakes | 12-speed
Ultegra Di2 12-speed STI lever for rim brakes - precise & race-ready.
The Shimano Ultegra ST-R8150 is an electronic brake/shift lever (STI) for 2x12-speed Di2 road bike drivetrains, specifically designed for rim brakes. It combines fast, intuitive shifting with direct and controlled braking performance.
The clearly defined click feel ensures precise gear changes even under load. The optimized ergonomics with textured surface improve grip and power transfer - ideal for racing and ambitious training.
Using the E-Tube Project App, shifting modes (Full-/Semi-Synchro-Shift), Multi-Shift, and button assignments can be individually configured. Two EW-SD300 ports enable connection to the battery (BT-DN300) and optional auxiliary switches.
Highlights:
- Di2 2x12-speed: fast & precise shifting.
- Rim brake version: lightweight & classic.
- Synchro-Shift compatible: Full & Semi.
- Ergonomic design: improved grip.
- Reach adjustment: individual customization.
Technical specifications:
- Manufacturer: Shimano
- Series: Ultegra R8100 Di2
- Model: ST-R8150
- Position: Right (R)
- Brake type: Rim brake
- Shifting system: Di2, 2x12-speed
- Ports: 2x EW-SD300
- Lever material: Aluminum
- Housing: GFRP
- Weight: approx. 295 g (pair, manufacturer's specification)
Scope of delivery:
- 1x Shimano Ultegra ST-R8150 Di2 STI Right | for rim brakes | 12-speed
- Note: Workshop packaging (without outer packaging)
Manufacturer's item no.: ISTR8150R | EAN: 4550170889845
“Precise shifting on the road bike - the Ultegra Di2 shifter ensures instant and crisp gear changes!”
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Shimano Europe B.V. distributes Shimano bicycle components and accessories, including drivetrains, brakes, pedals, wheelsets, shoes, and cycling apparel. The brand is known worldwide for reliable technology, precise shifting performance, and durable products for road bikes, mountain bikes, gravel bikes, e-bikes, and everyday bicycles.
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