Shimano Ultegra R8100-P Power Meter Crankset

Description

Thanks to the Shimano FC-R8100-P crankset, you can equip your Ultegra 2x12-speed road bike groupset with a power meter on both sides. This gives you access to information about your overall performance, cadence, torque efficiency, left-right balance and round pedaling. The accuracy of the total of 24 strain gauges is even higher than the previous model, with a deviation of only 1.5 %. Thanks to Bluetooth and ANT+ radio protocol, there is broad compatibility with bike computers and similar devices.

The lithium-ion battery is located in control unit on the crank spider, which you can easily recharge yourself. If it is completely full again after about 2.5 hours, it will last for at least 300 hours. By the way, the charging cable is the same as for your Ultegra Di2 shifter. You can also carry out firmware updates via the E-Tube Project. On the housing of the control unit, you will find an LED that signals the battery charge level and a button for easy zero calibration. Of course, the entire construction is waterproof and there is active temperature compensation, so you don't have to worry about the weather. You can attach the magnet for cadence measurement to the chainstay, seat tube or down tube using the included positioning tool.

Apart from these special features, the FC-R8100-P is technically identical to the " normal" Ultegra crankset. It converts your power into propulsion in a highly efficient manner, is characterized by an optimal stability/weight ratio thanks to the Hollowtech II design and inspires with precise, fast shifting processes. The crank arms are hollow-formed, as is the large chainring, which is partly made of carbon, resulting in significant weight savings. Apart from the axle, all essential parts were made of lightweight metal. FC-R8100-P has an asymmetrical 4-arm bolt circle diameter of 110 mm. It produces a chainline of 44.5 mm and has a Q-factor of 148 mm.

Specifications:

Application: Road, Triathlon & Time Trial
Type: power meter crankset (dual-sided)
Compatibility: Shimano 2x12-speed
Chainring Mount: 110 mm pitch circle, 4-arm asymmetrical

Technical Information:

Series: Ultegra R8100
Crank Arm Material: aluminum
Chainring Material: Aluminum / Carbon, Aluminum
Axle Material: steel
Gradation: 34-50, 36-52
Crank Arm Length: 170.0 mm, 172.5 mm, 175.0 mm
Chainline: 44.5 mm
Q-Factor: 148 mm
Axle Diameter: 24 mm
Compatible BSA Shell Width: 68 mm
Recommended Bottom Bracket: SM-BBR60 or SM-BB72-41B Pressfit Hollowtech II (not included)
Recommended Chain: CN-M8100
Tolerance: +/- 1.5%
Point of Measurement: crank arm
Power Source: lithium-ion battery, integrated
Battery Life: 300+ h
Data Collected: power, power balance left / right, pedal smoothness*, cadence, torque effectiveness*
Data Transfer: ANT+, Bluetooth

Note ***not transmitted via Bluetooth connections***

Compatibility:

2x12-speed:
Shift/Brake Lever: ST-R9250, ST-R9270, ST-R9160, ST-R9180, ST-R8150, ST-R8170, ST-R8060
Front Derailleur: FD-R9250, FD-R8150
Bottom Bracket: BB-R9100, SM-BB9000, SM-BBR60, SM-BB6700, SM-BB5700, BB-RS500, SM-BB4600, SM-BB92-41B, SM-BB72-41B, SM-BB71-41B, BB-RS500-PB
Chain: CN-M9100, CN-M8100, CN-M7100, CN-M6100

Features:

- power measurement on both sides via 24 strain gauges
- more accurate measurement than previous model
- integrated, rechargeable lithium-ion battery with long service life
- charging time approx. 2.5 hours, same charging cable as Di2
- waterproof construction
- active temperature compensation (operating temperature range -10 °C to +50 °C)
- simple zero-point calibration via button on the control unit or bicycle computer
- control unit with LED display for battery charge level (green, red, flashing red)
- firmware updates via E-Tube Project
- perfect balance between stiffness, stability, weight and rotational efficiency
- optimized power transfer
- fast, high-precision shifting at the front
- hollow crank arms (Hollowtech)
- hollow-formed large chainring made of aluminum-carbon composite (Hollowglide)
- anodized crankarms and chainrings
- aluminum chainring bolts

Technology:

Hollowtech II
Shimano Hollowtech II is a crank bottom bracket system designed to achieve an ideal ratio of stiffness, weight and rotational efficiency. It is based on an integration of the bottom bracket and the right crank arm and works with a 24 mm axle or bearing diameter, which has proven to be optimal in terms of stability. In many cases, the bearing cups are on the outside so that the load is better distributed. High-quality precision seals ensure a long service life.

Manufacturer Numbers:

170.0 mm 34-50: I-FCR8100PCX04A
170.0 mm 36-52: I-FCR8100PCX26A
172.5 mm 34-50: I-FCR8100PDX04A
172.5 mm 36-52: I-FCR8100PDX26A
175.0 mm 34-50: I-FCR8100PEX04A
175.0 mm 36-52: I-FCR8100PEX26A

- 1 x Shimano Dura-Ace FC-R9200-P Power Meter Crankset (34-50, 36-52)
- 1 x Shimano crank bolt
- 1 x Shimano EW-EC300 charging cable, 1.5 m
- 1 x installation ring for left crank arm
- 1 x magnet
- 1 x magnet cover, black
- 1 x magnet cover, white
- 2 x double-sided adhesive tape rolls
- 1 x Shimano TL-FC40 crank tool for left crank arm
- 1 x cover cap for left crank arm
- 1 x positioning tool for magnet

Gram Weight:

anthracite/170.0 mm 34-50: 804 g (Grams)
anthracite/170.0 mm 36-52: 821 g (Grams)

Thanks to the Shimano FC-R9200-P crankset, you can equip your Dura-Ace 2x12-speed road bike groupset with a power meter on both sides. This gives you access to information about your overall performance, cadence, torque efficiency, left-right balance and round pedaling. The accuracy of the total of 24 strain gauges is even higher than the previous model, with a deviation of only 1.5 %. Thanks to Bluetooth and ANT+ radio protocol, there is broad compatibility with bike computers and similar devices.
The lithium-ion battery is located in control unit on the crank spider, which you can easily recharge yourself. If it is completely full again after about 2.5 hours, it will last for at least 300 hours. By the way, the charging cable is the same as for your Dura-Ace Di2 shifter. You can also carry out firmware updates via the E-Tube Project. On the housing of the control unit, you will find an LED that signals the battery charge level and a button for easy zero calibration. Of course, the entire construction is waterproof and there is active temperature compensation, so you don't have to worry about the weather. You can attach the magnet for cadence measurement to the chainstay, seat tube or down tube using the included positioning tool.
Apart from these special features, the FC-R9200-P is technically identical to the " normal" Dura-Ace crankset. It converts your power into propulsion in a highly efficient manner, is characterized by an optimal stability/weight ratio thanks to the Hollowtech II design and inspires with precise, fast shifting processes. The crank arms are hollow-formed, as is the large chainring, which is partly made of carbon, resulting in significant weight savings. Apart from the axle, all essential parts were made of lightweight metal. FC-R9200-P has an asymmetrical 4-arm bolt circle diameter of 110 mm. It produces a chainline of 44.5 mm and has a Q-factor of 148 mm. The 40-54 tooth gradation option is specifically designed for competition use.

Specifications:

Application: Road, Triathlon & Time Trial
Type: power meter crankset (dual-sided)
Compatibility: Shimano 2x12-speed
Chainring Mount: 110 mm pitch circle, 4-arm asymmetrical

Technical Information:

Series: Dura-Ace R9200
Crank Arm Material: aluminum
Chainring Material: Aluminum / Carbon, Aluminum
Axle Material: steel
Gradation: 34-50, 36-52, 40-54
Crank Arm Length: 170.0 mm, 172.5 mm, 175.0 mm
Chainline: 44.5 mm
Q-Factor: 148 mm
Axle Diameter: 24 mm
Compatible BSA Shell Width: 68 mm
Recommended Bottom Bracket: BB-R9100 or SM-BB92-41B Pressfit Hollowtech II (not included)
Recommended Chain: CN-M9100
Tolerance: +/- 1.5%
Point of Measurement: crank arm
Power Source: lithium-ion battery, integrated
Battery Life: 300+ h
Data Collected: power, power balance left / right, pedal smoothness*, cadence, torque effectiveness*
Data Transfer: ANT+, Bluetooth

Note ***not transmitted via Bluetooth connections***

Compatibility:

Features:

- power measurement on both sides via 24 strain gauges
- more accurate measurement than previous model
- integrated, rechargeable lithium-ion battery with long service life
- charging time approx. 2.5 hours, same charging cable as Di2
- waterproof construction
- active temperature compensation (operating temperature range -10 °C to +50 °C)
- simple zero-point calibration via button on the control unit or bicycle computer
- control unit with LED display for battery charge level (green, red, flashing red)
- firmware updates via E-Tube Project
- perfect balance between stiffness, stability, weight and rotational efficiency
- optimized power transfer
- fast, high-precision shifting at the front
- 40-54 T as an option for racing
- hollow crank arms (Hollowtech)
- hollow-formed large chainring made of aluminum-carbon composite (Hollowglide)
- anodized crankarms and chainrings
- aluminum chainring bolts

Technology:

Manufacturer Numbers:

170.0 mm 34-50: I-FCR9200PCX04A
170.0 mm 36-52: I-FCR9200PCX26A
170.0 mm 40-54: I-FCR9200PCX40A
172.5 mm 34-50: I-FCR9200PDX04A
172.5 mm 36-52: I-FCR9200PDX26A
172.5 mm 40-54: I-FCR9200PDX40A
175.0 mm 34-50: I-FCR9200PEX04A
175.0 mm 36-52: I-FCR9200PEX26A
175.0 mm 40-54: I-FCR9200PEX40A

- 1 x Shimano Dura-Ace FC-R9200-P Power Meter Crankset (34-50, 36-52 or 40-54)
- 1 x Shimano crank bolt
- 1 x Shimano EW-EC300 charging cable, 1.5 m
- 1 x installation ring for left crank arm
- 1 x magnet
- 1 x magnet cover, black
- 1 x magnet cover, white
- 2 x double-sided adhesive tape rolls
- 1 x Shimano TL-FC40 crank tool for left crank arm
- 1 x cover cap for left crank arm
- 1 x positioning tool for magnet