4iiii Ultegra FC-R8000 Left Arm PowermeterA superb training buddy to keep your pedal stroke at its peak, this crank-integrated meter relays your power and cadence outputs direct to your onboard computer or device for immediate analysis and appropriate adjustments. Innovative, Onboard Power and Cadence MeterDesigned for use with Shimano Ultegra FC-R8000 cranksets, it uses ANT+ and Bluetooth connectivity to send your data to your compatible smartphone, giving measurements to within +/-1% to keep you riding at your very best. With 100+ hours of battery life and a strong IPX7 waterproof rating, it is an innovative addition for the determined trainer. Features: Accuracy: Measures to within +/-1% Crankset Compatibility: Shimano Ultegra FC-R8000 Wireless Connectivity: ANT+, Bluetooth Dimensions: 37.7x27.6x7.5mm Power Range: 0-4000w Cadence Range: 30-150rpm Waterproof Rating: IPX7, IPX5 Battery: CR2032 Lithium Ion coin cell, 100+ hours Module Weight: 8g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii Ultegra FC-R8000 Left Arm PowermeterA superb training buddy to keep your pedal stroke at its peak, this crank-integrated meter relays your power and cadence outputs direct to your onboard computer or device for immediate analysis and appropriate adjustments. Innovative, Onboard Power and Cadence MeterDesigned for use with Shimano Ultegra FC-R8000 cranksets, it uses ANT+ and Bluetooth connectivity to send your data to your compatible smartphone, giving measurements to within +/-1% to keep you riding at your very best. With 100+ hours of battery life and a strong IPX7 waterproof rating, it is an innovative addition for the determined trainer. Features: Accuracy: Measures to within +/-1% Crankset Compatibility: Shimano Ultegra FC-R8000 Wireless Connectivity: ANT+, Bluetooth Dimensions: 37.7x27.6x7.5mm Power Range: 0-4000w Cadence Range: 30-150rpm Waterproof Rating: IPX7, IPX5 Battery: CR2032 Lithium Ion coin cell, 100+ hours Module Weight: 8g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii Ultegra FC-R8000 Left Arm PowermeterA superb training buddy to keep your pedal stroke at its peak, this crank-integrated meter relays your power and cadence outputs direct to your onboard computer or device for immediate analysis and appropriate adjustments. Innovative, Onboard Power and Cadence MeterDesigned for use with Shimano Ultegra FC-R8000 cranksets, it uses ANT+ and Bluetooth connectivity to send your data to your compatible smartphone, giving measurements to within +/-1% to keep you riding at your very best. With 100+ hours of battery life and a strong IPX7 waterproof rating, it is an innovative addition for the determined trainer. Features: Accuracy: Measures to within +/-1% Crankset Compatibility: Shimano Ultegra FC-R8000 Wireless Connectivity: ANT+, Bluetooth Dimensions: 37.7x27.6x7.5mm Power Range: 0-4000w Cadence Range: 30-150rpm Waterproof Rating: IPX7, IPX5 Battery: CR2032 Lithium Ion coin cell, 100+ hours Module Weight: 8g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii Ultegra FC-R8000 Left Arm PowermeterA superb training buddy to keep your pedal stroke at its peak, this crank-integrated meter relays your power and cadence outputs direct to your onboard computer or device for immediate analysis and appropriate adjustments. Innovative, Onboard Power and Cadence MeterDesigned for use with Shimano Ultegra FC-R8000 cranksets, it uses ANT+ and Bluetooth connectivity to send your data to your compatible smartphone, giving measurements to within +/-1% to keep you riding at your very best. With 100+ hours of battery life and a strong IPX7 waterproof rating, it is an innovative addition for the determined trainer. Features: Accuracy: Measures to within +/-1% Crankset Compatibility: Shimano Ultegra FC-R8000 Wireless Connectivity: ANT+, Bluetooth Dimensions: 37.7x27.6x7.5mm Power Range: 0-4000w Cadence Range: 30-150rpm Waterproof Rating: IPX7, IPX5 Battery: CR2032 Lithium Ion coin cell, 100+ hours Module Weight: 8g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii Dura-Ace FC-R9100 Left Arm PowermeterThe perfect training companion to keep your pedal stroke as smooth and efficient as can be, this crank-integrated meter wirelessly sends your power and cadence outputs straight to your compatible computer or device, letting you make instant adjustments to your performance. Innovative, Onboard Power and Cadence MeterDesigned for use with Shimano Dura-Ace FC-R9100 cranksets, it utilises ANT+ and Bluetooth connectivity to relay your data right to your smartphone or onboard computer, giving precision measurements to within +/-1% to keep you pedalling at your peak. With 100+ hours of battery life and a strong IPX7 waterproof rating, it is an excellent accessory for the performance-focused rider. Features: Accuracy: Measures to within +/-1% Crankset Compatibility: Shimano Dura-Ace FC-R9100 Wireless Connectivity: ANT+, Bluetooth Dimensions: 37.7x27.6x7.5mm Power Range: 0-4000w Cadence Range: 30-150rpm Waterproof Rating: IPX7, IPX5 Battery: CR2032 Lithium Ion coin cell, 100+ hours Module Weight: 8g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii Dura-Ace FC-R9100 Left Arm PowermeterThe perfect training companion to keep your pedal stroke as smooth and efficient as can be, this crank-integrated meter wirelessly sends your power and cadence outputs straight to your compatible computer or device, letting you make instant adjustments to your performance. Innovative, Onboard Power and Cadence MeterDesigned for use with Shimano Dura-Ace FC-R9100 cranksets, it utilises ANT+ and Bluetooth connectivity to relay your data right to your smartphone or onboard computer, giving precision measurements to within +/-1% to keep you pedalling at your peak. With 100+ hours of battery life and a strong IPX7 waterproof rating, it is an excellent accessory for the performance-focused rider. Features: Accuracy: Measures to within +/-1% Crankset Compatibility: Shimano Dura-Ace FC-R9100 Wireless Connectivity: ANT+, Bluetooth Dimensions: 37.7x27.6x7.5mm Power Range: 0-4000w Cadence Range: 30-150rpm Waterproof Rating: IPX7, IPX5 Battery: CR2032 Lithium Ion coin cell, 100+ hours Module Weight: 8g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii Dura-Ace FC-R9100 Left Arm PowermeterThe perfect training companion to keep your pedal stroke as smooth and efficient as can be, this crank-integrated meter wirelessly sends your power and cadence outputs straight to your compatible computer or device, letting you make instant adjustments to your performance. Innovative, Onboard Power and Cadence MeterDesigned for use with Shimano Dura-Ace FC-R9100 cranksets, it utilises ANT+ and Bluetooth connectivity to relay your data right to your smartphone or onboard computer, giving precision measurements to within +/-1% to keep you pedalling at your peak. With 100+ hours of battery life and a strong IPX7 waterproof rating, it is an excellent accessory for the performance-focused rider. Features: Accuracy: Measures to within +/-1% Crankset Compatibility: Shimano Dura-Ace FC-R9100 Wireless Connectivity: ANT+, Bluetooth Dimensions: 37.7x27.6x7.5mm Power Range: 0-4000w Cadence Range: 30-150rpm Waterproof Rating: IPX7, IPX5 Battery: CR2032 Lithium Ion coin cell, 100+ hours Module Weight: 8g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii Dura-Ace FC-R9100 Left Arm PowermeterThe perfect training companion to keep your pedal stroke as smooth and efficient as can be, this crank-integrated meter wirelessly sends your power and cadence outputs straight to your compatible computer or device, letting you make instant adjustments to your performance. Innovative, Onboard Power and Cadence MeterDesigned for use with Shimano Dura-Ace FC-R9100 cranksets, it utilises ANT+ and Bluetooth connectivity to relay your data right to your smartphone or onboard computer, giving precision measurements to within +/-1% to keep you pedalling at your peak. With 100+ hours of battery life and a strong IPX7 waterproof rating, it is an excellent accessory for the performance-focused rider. Features: Accuracy: Measures to within +/-1% Crankset Compatibility: Shimano Dura-Ace FC-R9100 Wireless Connectivity: ANT+, Bluetooth Dimensions: 37.7x27.6x7.5mm Power Range: 0-4000w Cadence Range: 30-150rpm Waterproof Rating: IPX7, IPX5 Battery: CR2032 Lithium Ion coin cell, 100+ hours Module Weight: 8g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii XT M8000 Left Arm PowermeterKeeping your pedal stroke and performance full of consistency and quality, this innovative crank-integrated meter takes your outputs and wirelessly relays them to your compatible onboard device, allowing you to make the appropriate adjustments for topping the podium. Innovative, Onboard Power and Cadence MeterSpecifically made for use with Shimano XTR M8000 cranksets, it utilises ANT+ and Bluetooth connectivity to send your power and cadence readings instantly to your smartphone or computer, providing super-accurate measurements to within +/-1%. Coming with an impressive 100+ hours of battery life and an all-weather IPX7 waterproof rating, it is a fantastic addition for the performance-focused cyclist. Features: Accuracy: Measures to within +/-1% Crankset Compatibility: Shimano XTR M8000 Wireless Connectivity: ANT+, Bluetooth Dimensions: 37.7x27.6x7.5mm Power Range: 0-4000w Cadence Range: 30-150rpm Waterproof Rating: IPX7, IPX5 Battery: CR2032 Lithium Ion coin cell, 100+ hours Module Weight: 8g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii XT M8000 Left Arm PowermeterKeeping your pedal stroke and performance full of consistency and quality, this innovative crank-integrated meter takes your outputs and wirelessly relays them to your compatible onboard device, allowing you to make the appropriate adjustments for topping the podium. Innovative, Onboard Power and Cadence MeterSpecifically made for use with Shimano XTR M8000 cranksets, it utilises ANT+ and Bluetooth connectivity to send your power and cadence readings instantly to your smartphone or computer, providing super-accurate measurements to within +/-1%. Coming with an impressive 100+ hours of battery life and an all-weather IPX7 waterproof rating, it is a fantastic addition for the performance-focused cyclist. Features: Accuracy: Measures to within +/-1% Crankset Compatibility: Shimano XTR M8000 Wireless Connectivity: ANT+, Bluetooth Dimensions: 37.7x27.6x7.5mm Power Range: 0-4000w Cadence Range: 30-150rpm Waterproof Rating: IPX7, IPX5 Battery: CR2032 Lithium Ion coin cell, 100+ hours Module Weight: 8g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii XTR M9000 Left Arm PowermeterEnsuring your pedal stroke and performance is consistent and in peak condition, this discreet crank-integrated meter wirelessly relays your power and cadence outputs to your compatible device, letting you make immediate improvements to the efficiency and effectiveness of your training or race. Innovative, Onboard Power and Cadence MeterSpecifically made for use with Shimano XTR M9000 cranksets, it makes the most of its ANT+ and Bluetooth connectivity to deliver your data instantly to your smartphone or onboard computer, providing precision measurements to within +/-1%. Running with a whopping 100+ hours of battery life and well-worthy of its IPX7 waterproof rating, it is a fantastic fixture for the performance-focused cyclist. Features: Accuracy: Measures to within +/-1% Crankset Compatibility: Shimano XTR M9000 Wireless Connectivity: ANT+, Bluetooth Dimensions: 37.7x27.6x7.5mm Power Range: 0-4000w Cadence Range: 30-150rpm Waterproof Rating: IPX7, IPX5 Battery: CR2032 Lithium Ion coin cell, 100+ hours Module Weight: 8g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii XTR M9000 Left Arm PowermeterEnsuring your pedal stroke and performance is consistent and in peak condition, this discreet crank-integrated meter wirelessly relays your power and cadence outputs to your compatible device, letting you make immediate improvements to the efficiency and effectiveness of your training or race. Innovative, Onboard Power and Cadence MeterSpecifically made for use with Shimano XTR M9000 cranksets, it makes the most of its ANT+ and Bluetooth connectivity to deliver your data instantly to your smartphone or onboard computer, providing precision measurements to within +/-1%. Running with a whopping 100+ hours of battery life and well-worthy of its IPX7 waterproof rating, it is a fantastic fixture for the performance-focused cyclist. Features: Accuracy: Measures to within +/-1% Crankset Compatibility: Shimano XTR M9000 Wireless Connectivity: ANT+, Bluetooth Dimensions: 37.7x27.6x7.5mm Power Range: 0-4000w Cadence Range: 30-150rpm Waterproof Rating: IPX7, IPX5 Battery: CR2032 Lithium Ion coin cell, 100+ hours Module Weight: 8g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii XTR M9020 Left Arm PowermeterMeasuring your pedal power and cadence with super-accuracy, this lightweight crank-integrated meter sends your outputs to your wireless compatible device for instant analysis and adjustments to your form. Innovative, Onboard Power and Cadence MeterDesigned especially for use with Shimano XTR M9020 cranksets, it utilises its ANT+ and Bluetooth connectivity to relay your riding information directly to your smartphone or onboard computer, giving measurements to within +/-1%, allowing you to make performance-improving adjustments in the blink of an eye. Coming with an impressive 100+ hours of battery life and an IPX7 waterproof rating for year-round use, this is a fantastic fixture for the performance-focused cyclist. Features: Accuracy: Measures to within +/-1% Crankset Compatibility: Shimano XTR M9000 Wireless Connectivity: ANT+, Bluetooth Dimensions: 37.7x27.6x7.5mm Power Range: 0-4000w Cadence Range: 30-150rpm Waterproof Rating: IPX7, IPX5 Battery: CR2032 Lithium Ion coin cell, 100+ hours Module Weight: 8g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii XTR M9020 Left Arm PowermeterMeasuring your pedal power and cadence with super-accuracy, this lightweight crank-integrated meter sends your outputs to your wireless compatible device for instant analysis and adjustments to your form. Innovative, Onboard Power and Cadence MeterDesigned especially for use with Shimano XTR M9020 cranksets, it utilises its ANT+ and Bluetooth connectivity to relay your riding information directly to your smartphone or onboard computer, giving measurements to within +/-1%, allowing you to make performance-improving adjustments in the blink of an eye. Coming with an impressive 100+ hours of battery life and an IPX7 waterproof rating for year-round use, this is a fantastic fixture for the performance-focused cyclist. Features: Accuracy: Measures to within +/-1% Crankset Compatibility: Shimano XTR M9000 Wireless Connectivity: ANT+, Bluetooth Dimensions: 37.7x27.6x7.5mm Power Range: 0-4000w Cadence Range: 30-150rpm Waterproof Rating: IPX7, IPX5 Battery: CR2032 Lithium Ion coin cell, 100+ hours Module Weight: 8g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii 105 R7000 Left Arm PowermeterAn excellent addition to your training setup, this onboard power meter by 4iiii relays your riding outputs straight to your compatible device, keeping you riding as efficiently as possible. Suitable for Shimano 105 R7000 systems, this left-sided crank arm uses ANT+ and Bluetooth to deliver accurate measurements to within +/-1% right to your computer. Measuring tri-axial strain for power, cadence and speed readings, this discrete gauge is a superb companion to keep you in peak condition. Features: Crank Arm: Shimano 105 R7000 Alloy Accuracy: +/- 1% error margin Battery Life: 100+ hours on 2032 coin cell battery Connectivity: ANT+, BluetoothBuy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii 105 R7000 Left Arm PowermeterAn excellent addition to your training setup, this onboard power meter by 4iiii relays your riding outputs straight to your compatible device, keeping you riding as efficiently as possible. Suitable for Shimano 105 R7000 systems, this left-sided crank arm uses ANT+ and Bluetooth to deliver accurate measurements to within +/-1% right to your computer. Measuring tri-axial strain for power, cadence and speed readings, this discrete gauge is a superb companion to keep you in peak condition. Features: Crank Arm: Shimano 105 R7000 Alloy Accuracy: +/- 1% error margin Battery Life: 100+ hours on 2032 coin cell battery Connectivity: ANT+, BluetoothBuy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii 105 R7000 Left Arm PowermeterAn excellent addition to your training setup, this onboard power meter by 4iiii relays your riding outputs straight to your compatible device, keeping you riding as efficiently as possible. Suitable for Shimano 105 R7000 systems, this left-sided crank arm uses ANT+ and Bluetooth to deliver accurate measurements to within +/-1% right to your computer. Measuring tri-axial strain for power, cadence and speed readings, this discrete gauge is a superb companion to keep you in peak condition. Features: Crank Arm: Shimano 105 R7000 Alloy Accuracy: +/- 1% error margin Battery Life: 100+ hours on 2032 coin cell battery Connectivity: ANT+, BluetoothBuy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii 105 R7000 Left Arm PowermeterAn excellent addition to your training setup, this onboard power meter by 4iiii relays your riding outputs straight to your compatible device, keeping you riding as efficiently as possible. Suitable for Shimano 105 R7000 systems, this left-sided crank arm uses ANT+ and Bluetooth to deliver accurate measurements to within +/-1% right to your computer. Measuring tri-axial strain for power, cadence and speed readings, this discrete gauge is a superb companion to keep you in peak condition. Features: Crank Arm: Shimano 105 R7000 Alloy Accuracy: +/- 1% error margin Battery Life: 100+ hours on 2032 coin cell battery Connectivity: ANT+, BluetoothBuy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii Precision Pro Ultegra R8000 Power MeterDesigned to give every level of rider a professional standard of performance analysis, this excellent onboard power meter measures your outputs to within one percent and uses wireless technology to relay the data straight to your device. Gauging your pedal power and cadence, this Shimano Ultegra R8000-compatible model features 3D power meter technology to read tri-axial crank strain, to produce super accurate riding data. Top-Performance, Precision Power Meter Compatible with a variety of ANT+ and Bluetooth Smart phones, computers and other devices, the Precision Pro syncs with the 4iiii app which lets you monitor the rider compensation scale and other analysis features. Fitting snugly on your crankset, it measures the individual outputs of both legs for a concise and unobtrusive experience and relays the information to your chosen gadget. Coming equipped with a 100+ hour coin cell battery, this top-level training companion helps to keep an eye on your progress mile after mile. Features: Compatibility: Shimano Ultegra R8000 drivetrain Battery Life: 100+ hours on 2032 coin cell battery Connectivity: ANT+, Bluetooth Smart head units, smartphones, and other 4iiii products Technology: 3D power meter technology (patent pending) measures tri-axial strain on your crank Accuracy: +/- 1% Upgrades: Over the air capability Weight: 25g Buy 4iiii Components  from Chain Reaction Cycles, the World's Largest Online Bike Store.

4iiii Precision Pro Ultegra R8000 Power MeterDesigned to give every level of rider a professional standard of performance analysis, this excellent onboard power meter measures your outputs to within one percent and uses wireless technology to relay the data straight to your device. Gauging your pedal power and cadence, this Shimano Ultegra R8000-compatible model features 3D power meter technology to read tri-axial crank strain, to produce super accurate riding data. Top-Performance, Precision Power Meter Compatible with a variety of ANT+ and Bluetooth Smart phones, computers and other devices, the Precision Pro syncs with the 4iiii app which lets you monitor the rider compensation scale and other analysis features. Fitting snugly on your crankset, it measures the individual outputs of both legs for a concise and unobtrusive experience and relays the information to your chosen gadget. Coming equipped with a 100+ hour coin cell battery, this top-level training companion helps to keep an eye on your progress mile after mile. Features: Compatibility: Shimano Ultegra R8000 drivetrain Battery Life: 100+ hours on 2032 coin cell battery Connectivity: ANT+, Bluetooth Smart head units, smartphones, and other 4iiii products Technology: 3D power meter technology (patent pending) measures tri-axial strain on your crank Accuracy: +/- 1% Upgrades: Over the air capability Weight: 25g Buy 4iiii Components  from Chain Reaction Cycles, the World's Largest Online Bike Store.