{"product_id":"fc-r8100-p","title":"FC-R8100-P (ULTEGRA)","description":"\u003ch3 class=\"list_anchor_cs_h3\"\u003eSHIMANO FC-R8100-P (ULTEGRA) | Dual-Sided Power Meter Crank that Visualizes Power\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eGet numerical insights into how to get faster that you can't see just by feel.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe SHIMANO ULTEGRA R8100 series \"FC-R8100-P\" is a dual-sided power meter integrated crankset that supports independent left and right measurement.\u003c\/p\u003e\n\u003cp\u003eShimano's unique strain gauge technology achieves highly accurate power measurement of ±2% across the entire calibration range. It supports not only left and right power balance but also force vector measurement, which helps in analyzing pedaling efficiency and optimizing training.\u003c\/p\u003e\n\u003cp\u003eThe power meter is smartly integrated into the crank, ensuring waterproofing and high durability. The active temperature compensation function makes it less susceptible to environmental changes, enabling stable measurement regardless of season or conditions.\u003c\/p\u003e\n\u003cp\u003eFurthermore, it supports Bluetooth® LE and ANT+, allowing easy connection to cycling computers and training apps. This high-performance power meter crank is widely used by race-oriented riders, long-distance riders, and training enthusiasts alike.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 class=\"list_anchor_cs_h3\"\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003eULTEGRA R8100 series dual-sided power meter crank\u003c\/li\u003e\n\n\u003cli\u003eSupports independent left and right power measurement\u003c\/li\u003e\n\n\u003cli\u003eAdopts Shimano's unique strain gauge technology\u003c\/li\u003e\n\n\u003cli\u003eHigh-precision data acquisition with ±2% measurement accuracy\u003c\/li\u003e\n\n\u003cli\u003eSupports force vector measurement\u003c\/li\u003e\n\n\u003cli\u003eEquipped with active temperature compensation function\u003c\/li\u003e\n\n\u003cli\u003eBluetooth® LE and ANT+ connectivity\u003c\/li\u003e\n\n\u003cli\u003eEasy zero offset calibration with a button on the unit\u003c\/li\u003e\n\n\u003cli\u003eIntegrated design with excellent waterproofing and durability\u003c\/li\u003e\n\n\u003cli\u003eSupports data analysis with SHIMANO CONNECT Lab\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 class=\"list_anchor_cs_h3\"\u003eSPEC\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003eSeries: ULTEGRA R8100\u003c\/li\u003e\n\n\u003cli\u003eModel: FC-R8100-P\u003c\/li\u003e\n\n\u003cli\u003eCompatible speeds: 2×12speed\u003c\/li\u003e\n\n\u003cli\u003ePower measurement: Independent left and right measurement\u003c\/li\u003e\n\n\u003cli\u003eMeasurement accuracy: ±2%\u003c\/li\u003e\n\n\u003cli\u003eNumber of strain sensors: 24\u003c\/li\u003e\n\n\u003cli\u003eForce vector measurement: Supported\u003c\/li\u003e\n\n\u003cli\u003eCadence measurement: Supported\u003c\/li\u003e\n\n\u003cli\u003eConnectivity: Bluetooth® LE \/ ANT+\u003c\/li\u003e\n\n\u003cli\u003eTemperature compensation: Active temperature compensation\u003c\/li\u003e\n\n\u003cli\u003eBattery: Built-in lithium-ion\u003c\/li\u003e\n\n\u003cli\u003eBattery life: Approximately 226-300 hours\u003c\/li\u003e\n\n\u003cli\u003eChainring configuration: 50-34T \/ 52-36T \/ no chainring\u003c\/li\u003e\n\n\u003cli\u003eCrank arm length: 160 \/ 165 \/ 170 \/ 172.5 \/ 175mm\u003c\/li\u003e\n\n\u003cli\u003eAverage weight: 758g (50-34T), 769g (52-36T)\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eIf you are serious about training, a power meter can be a very powerful tool.\u003c\/p\u003e\n\u003cp\u003eThe FC-R8100-P can measure left and right independently, allowing you to understand not only simple power output but also left\/right balance and pedaling habits. By utilizing the force vector function, you can objectively analyze your pedaling.\u003c\/p\u003e\n\u003cp\u003eThe crank-integrated design gives it a clean look, and it also seems to have excellent waterproofing and durability. It's recommended not only for riders aiming for races but also for long-distance riders who want to get faster efficiently.\u003c\/p\u003e\n\u003cp\u003eAs expected from the ULTEGRA grade, I believe it is a power meter crank with an excellent balance of performance and price.\u003c\/p\u003e","brand":"SHIMANO","offers":[{"title":"50-34T \/ 170mm \/ In-store stock","offer_id":50119214334227,"sku":"4550170821197","price":170453.0,"currency_code":"JPY","in_stock":false},{"title":"50-34T \/ 170mm \/ Manufacturer order (approx. 10 days)","offer_id":50119214825747,"sku":"oty-4550170821197","price":170453.0,"currency_code":"JPY","in_stock":true},{"title":"50-34T \/ 172.5mm \/ In-store stock","offer_id":50119214366995,"sku":"4550170172862","price":170453.0,"currency_code":"JPY","in_stock":false},{"title":"50-34T \/ 172.5mm \/ Manufacturer order (approx. 10 days)","offer_id":50119214858515,"sku":"oty-4550170172862","price":170453.0,"currency_code":"JPY","in_stock":false},{"title":"50-34T \/ 175mm \/ In-store stock","offer_id":50119214399763,"sku":"4550170172855","price":170453.0,"currency_code":"JPY","in_stock":false},{"title":"50-34T \/ 175mm \/ Manufacturer order (approx. 10 days)","offer_id":50119214891283,"sku":"oty-4550170172855","price":170453.0,"currency_code":"JPY","in_stock":true},{"title":"52-36T \/ 170mm \/ In-store stock","offer_id":50119214498067,"sku":"4550170821234","price":170453.0,"currency_code":"JPY","in_stock":false},{"title":"52-36T \/ 170mm \/ Manufacturer order (approx. 10 days)","offer_id":50119214989587,"sku":"oty-4550170821234","price":170453.0,"currency_code":"JPY","in_stock":true},{"title":"52-36T \/ 172.5mm \/ In-store stock","offer_id":50119214530835,"sku":"4550170821203","price":170453.0,"currency_code":"JPY","in_stock":false},{"title":"52-36T \/ 172.5mm \/ Manufacturer order (approx. 10 days)","offer_id":50119215022355,"sku":"oty-4550170821203","price":170453.0,"currency_code":"JPY","in_stock":true},{"title":"52-36T \/ 175mm \/ In-store stock","offer_id":50119214563603,"sku":"4550170172909","price":170453.0,"currency_code":"JPY","in_stock":false},{"title":"52-36T \/ 175mm \/ Manufacturer order (approx. 10 days)","offer_id":50119215055123,"sku":"oty-4550170172909","price":170453.0,"currency_code":"JPY","in_stock":true},{"title":"Chainring not included \/ 170mm \/ In-store stock","offer_id":50119214661907,"sku":"4550170821135","price":156743.0,"currency_code":"JPY","in_stock":false},{"title":"Chainring not included \/ 170mm \/ Manufacturer order (approx. 10 days)","offer_id":50119215153427,"sku":"oty-4550170821135","price":156743.0,"currency_code":"JPY","in_stock":true},{"title":"Chainring not included \/ 172.5mm \/ In-store stock","offer_id":50119214694675,"sku":"4550170172824","price":156743.0,"currency_code":"JPY","in_stock":false},{"title":"Chainring not included \/ 172.5mm \/ Manufacturer order (approx. 10 days)","offer_id":50119215186195,"sku":"oty-4550170172824","price":156743.0,"currency_code":"JPY","in_stock":true},{"title":"Chainring not included \/ 175mm \/ In-store stock","offer_id":50119214727443,"sku":"4550170172886","price":156743.0,"currency_code":"JPY","in_stock":false},{"title":"Chainring not included \/ 175mm \/ Manufacturer order (approx. 10 days)","offer_id":50119215218963,"sku":"oty-4550170172886","price":156743.0,"currency_code":"JPY","in_stock":true},{"title":"Chainring not included \/ 160mm \/ In-store stock","offer_id":50119214596371,"sku":"4550170821180","price":156743.0,"currency_code":"JPY","in_stock":false},{"title":"Chainring not included \/ 160mm \/ Manufacturer order (approx. 10 days)","offer_id":50119215087891,"sku":"oty-4550170821180","price":156743.0,"currency_code":"JPY","in_stock":true},{"title":"Chainring not included \/ 165 mm \/ In-store stock","offer_id":50119214629139,"sku":"4550170821227","price":156743.0,"currency_code":"JPY","in_stock":false},{"title":"Chainring not included \/ 165 mm \/ Manufacturer order (approx. 10 days)","offer_id":50119215120659,"sku":"oty-4550170821227","price":156743.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/4237\/2883\/files\/FC-R8100-P_1.jpg?v=1732513795","url":"https:\/\/store-eirin-jp.com\/en\/products\/fc-r8100-p","provider":"京都の自転車屋 CYCLE SHOP eirin ＆ サイクルハテナ","version":"1.0","type":"link"}