Shimano 105 Di2 R7150 50/34T 2x12 Hydraulic Disc Brake Groupset

Shimano 105 Di2 R7150 50/34T 2x12 Hydraulic Disc Brake Groupset brings together electronic shifting technology, controlled hydraulic disc brake performance, and compact ratios suitable for long rides for modern road bike users.

The Shimano 105 Di2 platform features a semi-wireless design. While the shift-brake levers communicate wirelessly, the internal battery is connected to the front and rear derailleurs via E-Tube cables. This design offers a clean cockpit appearance, fast shifting response, and a reliable system connection. Shimano states that the main 105 Di2 battery can provide approximately 1,000 km of use on a single charge, while the CR1632 batteries in the shift-brake levers are designed to last for years.

The set's 50/34T compact crankset and 11-34T 12-speed cassette aim to provide sufficient top gear for fast flat riding and easier pedaling on steep climbs. The Shimano 105 Di2 12-speed platform has been developed around 50/34T and 52/36T crankset options and 11-34T and 11-36T cassette options.

The ST-R7170 shift-brake levers and BR-R7170 Flat Mount calipers on the hydraulic disc brake side offer controlled braking and a wider pad-rotor clearance on road bikes. Shimano states that the 10% greater pad clearance in the new 105 brake system helps reduce the risk of noise compared to the previous design.

The CS-R7100 11-34T cassette in the set is also compatible with existing Shimano 11-speed road freehub bodies. Therefore, many users can switch to the 12-speed 105 Di2 system without changing the wheelset.

This set available at Ultraviole is a complete option for athletes who want to switch from mechanical shifting to electronic shifting, completely renew their road bike, or build a powerful, up-to-date, and long-lasting 2x12 Di2 system at the Shimano 105 level.

Key Features

• Shimano 105 Di2 R7150 / R7170 electronic groupset
• 2x12 speed road bike drivetrain
• 50/34T compact crankset
• 172.5 mm crank length
• 11-34T 12-speed cassette
• Semi-wireless Di2 shifting
• Hydraulic disc brake system
• Flat Mount caliper design
• 160 mm front and 140 mm rear Center Lock rotor
• Internal BT-DN300 Di2 battery
• ST-R7170 wireless shift-brake levers
• RD-R7150 electronic rear derailleur
• FD-R7150 electronic front derailleur
• Adjustment, update, and customization support with Shimano E-Tube Project
• Suitable for road, endurance, and performance-oriented riding

Technical Specifications

• Brand: Shimano
• Series: Shimano 105 Di2
• Groupset platform: R7150 / R7170
• Product type: Complete road bike groupset
• Drivetrain: 2x12
• Shifting technology: Di2 electronic / semi-wireless
• Crankset: Shimano FC-R7100
• Crank ratio: 50/34T
• Crank length: 172.5 mm
• Cassette: Shimano CS-R7100
• Cassette ratio: 11-34T
• Chain: Shimano CN-M7100, 12-speed
• Rear derailleur: Shimano RD-R7150 Di2
• Front derailleur: Shimano FD-R7150 Di2
• Shift-brake levers: Shimano ST-R7170
• Brake calipers: Shimano BR-R7170
• Brake type: Hydraulic disc brake
• Caliper mounting: Flat Mount
• Rotors: Shimano SM-RT70 Ice-Tech
• Rotor size: 160 mm front / 140 mm rear
• Rotor connection: Center Lock
• Main battery: Shimano BT-DN300
• Charging cable: Shimano EW-EC300
• Electrical cables: EW-SD300-I, 700 mm and 1000 mm
• Freehub compatibility: Shimano 11/12 speed road freehub
• SKU: 1001221008
• EAN / GTIN: 8693530211095

Package Contents

• 1x Shimano FC-R7100 50/34T crankset, 172.5 mm
• 1x Shimano CS-R7100 11-34T 12-speed cassette
• 1x Shimano FD-R7150 Di2 front derailleur
• 1x Shimano RD-R7150 Di2 rear derailleur
• 1x Shimano ST-R7170 left shift-brake lever
• 1x Shimano ST-R7170 right shift-brake lever
• 1x Shimano BR-R7170 front Flat Mount hydraulic caliper
• 1x Shimano BR-R7170 rear Flat Mount hydraulic caliper
• 1x Shimano CN-M7100 12-speed chain
• 1x Shimano BT-DN300 internal Di2 battery
• 1x Shimano EW-EC300 charging cable
• 1x Shimano EW-SD300-I 700 mm electrical cable
• 1x Shimano EW-SD300-I 1000 mm electrical cable
• 1x Shimano SM-RT70 Ice-Tech 160 mm Center Lock rotor
• 1x Shimano SM-RT70 Ice-Tech 140 mm Center Lock rotor

Note: The bottom bracket is not included in this set. A Shimano Hollowtech II road bottom bracket compatible with your frame standard must be selected separately for the crankset. Brake hose cutting, hydraulic system installation, Di2 cable routing, and system adjustments must be performed by an authorized bike service.