105 Di2 R7150 Groupset 2x12 34-50 - black/172.5 mm 34-50, 11-34

Shimano 105 Di2 R7150 Groupset 2x12 34-50

Item number: 88663

The Shimano 105 Di2 R7150 2x12-speed Groupset - It's a new day

The R7150 is the first 105 groupset with electronic shifting. Shimano has also extended its " Science of Speed" to the more affordable series compared to Dura-Ace and Ultegra and equips it with the retreaded, semi-wireless Di2 platform. This works without cables at the crucial point, namely in the interaction between STIs and rear derailleur. Cables are only used between the battery and the rear derailleur or front derailleur. The wireless protocol is extremely fast and reliable, which raises the shifting speed to a new level - with consistently high precision. That's not all: this 105 groupset is also the first with twelve rear gears, so you have a wider gear selection and are optimally prepared for any terrain. Conveniently, the 105 12-speed cassettes are also compatible with older Shimano road freehubs. Combined with the advanced disc brake system, the R7150 lets you experience every day on a road bike anew and discover the street as a space of endless possibilities.

The 105 Di2 R7150 Road groupset by Shimano consists of a 2x12-speed crank with 34-50 tooth gradation, a flat mount disc brake set and an electronic rear derailleur and front derailleur for semi-wireless shifting. Of course, a rechargeable battery, a Quick-Link chain and a cassette with 11-34 teeth are also included.

Information regarding the return of batteries and electrical equipment:

Information on the return and disposal of batteries and electrical equipment can be found here.


105 Di2 R7150
Shifters & Derailleurs:
2x, 12-speed (electronic, semi-wireless)
disc, hydraulic (flat mount)


170.0 mm, 172.5 mm, 175.0 mm (gradation 34-50)
Front Derailleur:
Rear Derailleur:
long cage


  • battery mounting internally in the seatpost (adapter required), running time approx. 1000 km
  • two CR1632 batteries in each STI for wireless shifting
  • front derailleur connected to battery via cable
  • rear derailleur with wireless chip, LED display, charging socket and function button, connected to battery via cable
  • cassette with wide gear range for any terrain
  • 10% more free space for the brake pads reduces noise development

Additional Components Needed:

The following components are still required for the semi-wireless operation of the 105 Di2 R7150 groupset:
  • Bottom Bracket: Shimano recommends SM-BBR60 or SM-BB72-41B Pressfit Hollowtech II.
  • 2 x brake rotors (140, 160 or 180 mm), recommended: SM-RT70, SM-RT64
  • 2 x EW-SD300-I power cables: 1 x from battery to front derailleur (max. 1500 mm) and 1 x from battery to rear derailleur (max. 1700 mm)*
  • recommended: rubber grommets for internal cable routing
  • if necessary, FM-to-FM brake adapter SM-MA-R160 D/D for 160 mm brake rotor with 140 mm FM frame or SM-MA-R160 D/D for 180 mm brake rotor with 160 mm FM frame
  • if necessary, brake caliper mounting bolts for 10/15/20/30/35 mm frame diameter (Type C and Type C2)

* To determine the correct cable lengths, the bike must be measured as follows:
  • Distance between battery and front derailleur
  • Distance between battery and rear derailleur = distance between battery and bottom bracket + distance between bottom bracket and rear derailleur

You can find more information in the Shimano manual or contact our service staff.


Shimano 105 R7150 Di2 2x12 34-50 groupset, consisting of:
  • 1 x Shimano 105 crankset (FC-R7100)
  • 1 x Shimano 105 Di2 rear derailleur (RD-R7150)
  • 1 x Shimano 105 Di2 front derailleur (FD-R7150)
  • 1 x Shimano Di2 battery (BT-DN300)
  • 1 x Shimano Di2 charging cables (EW-EC300)
  • 1 x Shimano 105 cassette (CS-R7100)
  • 1 x Shimano SLX / 105 Quick-Link chain (CN-M7100)
  • 1 x pair Shimano 105 disc brakes (BR-R7170 + Di2 ST-R7170), front and rear
  • 1 x Shimano SM-BH90-JK-SSR brake hose, 1000 mm (front)
  • 1 x Shimano SM-BH90-JK-SSR brake hose, 1700 mm (rear)
  • 2 x pair Shimano resin brake pads with cooling fins
  • 1 x disc brake adapter for front 140/160 + 160/180 mm
  • 2 x hose connection set with olive (mounted) and insert pin
  • 2 x type A brake caliper fixing bolts, front
  • 2 x brake caliper fixing bolts for 25 mm frame diameter, rear
  • 1 x Shimano cassette end ring
  • 1 x Shimano master link
  • 1 x Shimano TL-EW300 cable tool
  • 1 x Shimano crank bolt
  • 4 x CR1632 for STIs battery
  • brake set ready for assembly, filled, bleeding is recommended after assembly

  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.89 / 5.00


  • black/170.0 mm 34-50, 11-34, in stock
  • black/172.5 mm 34-50, 11-34, in stock
  • black/175.0 mm 34-50, 11-34, in stock

Customer Reviews (1)


Customer Reviews (1)


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by RUBEN G. on 20.02.2023
verified purchase
item: black/170.0 mm 34-50, 11-34
2 of 4 customers found this review helpful.


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