{"product_id":"sinet-bottom-bracket-torque-sensor","title":"SINET™ Bottom Bracket Torque Sensor – 68 mm","description":"\u003c!-- PRODUCT TABS --\u003e\n\u003cdetails class=\"product-accordion\" open=\"\"\u003e\n\u003csummary\u003eOverview\u003c\/summary\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSINET™ Bottom Bracket Torque Sensor\u003c\/strong\u003e provides smooth, proportional pedal assistance by measuring the rider’s pedaling force and cadence. Unlike a basic cadence sensor that only detects crank rotation, the torque sensor adjusts motor assistance in response to how hard the rider is pedaling.\u003c\/p\u003e\n\n\u003cp\u003eThis sensor is designed for bicycles and trikes with a \u003cstrong\u003e68 mm bottom bracket shell\u003c\/strong\u003e and requires a compatible \u003cstrong\u003esquare-taper crankset\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eMeasures rider pedaling force and crank rotation\u003c\/li\u003e\n\u003cli\u003eProvides smooth, proportional pedal assistance\u003c\/li\u003e\n\u003cli\u003eFits a 68 mm bottom bracket shell\u003c\/li\u003e\n\u003cli\u003eRequires square-taper crankarms\u003c\/li\u003e\n\u003cli\u003eDesigned for current E-BikeKit SINET™ systems\u003c\/li\u003e\n\u003cli\u003eIncludes a protective cable grommet\u003c\/li\u003e\n\u003cli\u003eBottom bracket torque-sensor extension cable sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eInstallation Notice:\u003c\/strong\u003e Installation requires removal of the existing bottom bracket and drilling a cable-routing hole in the bottom bracket shell. The included grommet must be installed in the drilled opening to protect the sensor cable from the frame.\u003c\/p\u003e\n\n\u003cp\u003eFor larger frames, upright trikes, and recumbents, additional cable length may be required. The \u003ca href=\"https:\/\/dealers.ebikekit.com\/products\/sinet-torque-sensor-extension-cable\"\u003eSINET™ Torque Sensor Extension Cable\u003c\/a\u003e is sold separately.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"product-accordion\"\u003e\n\u003csummary\u003eHow Torque-Sensing Pedal Assist Works\u003c\/summary\u003e\n\n\u003cp\u003eThe SINET™ torque sensor measures force applied through the crankset while also detecting crank rotation. The SINET™ controller uses this information to regulate motor output according to the rider’s effort and the selected pedal-assist level.\u003c\/p\u003e\n\n\u003cp\u003eThis creates a more natural riding experience than cadence-only pedal assist:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eLight pedaling produces lighter motor assistance\u003c\/li\u003e\n\u003cli\u003eStronger pedaling produces greater motor assistance\u003c\/li\u003e\n\u003cli\u003eAssistance responds progressively instead of switching on at a fixed output\u003c\/li\u003e\n\u003cli\u003eLow-speed starts and transitions between assist levels feel smoother\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe exact assistance response depends on the selected LCD assist level, controller programming, gearing, rider input, and operating conditions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"product-accordion\"\u003e\n\u003csummary\u003eFitment Requirements\u003c\/summary\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBottom Bracket Shell Width:\u003c\/strong\u003e 68 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrank Interface:\u003c\/strong\u003e Square taper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrank Compatibility:\u003c\/strong\u003e Requires compatible square-taper crankarms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Platform:\u003c\/strong\u003e Current E-BikeKit SINET™ system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Modification:\u003c\/strong\u003e A cable-routing hole must be drilled in the bottom bracket shell\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Protection:\u003c\/strong\u003e Included grommet must be installed in the drilled opening\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Confirm the frame has a 68 mm bottom bracket shell and sufficient internal clearance before installation. This sensor is not intended for press-fit bottom brackets, external-bearing crank systems, one-piece cranks, oversized bottom bracket shells, or incompatible crank interfaces.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"product-accordion\"\u003e\n\u003csummary\u003eCompatibility\u003c\/summary\u003e\n\n\u003cp\u003e\u003cstrong\u003eCompatible With:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eCurrent E-BikeKit SINET™ conversion systems\u003c\/li\u003e\n\u003cli\u003eCurrent E-BikeKit SINET™ complete trike systems\u003c\/li\u003e\n\u003cli\u003e68 mm threaded bottom bracket shells\u003c\/li\u003e\n\u003cli\u003eCompatible square-taper cranksets and crankarms\u003c\/li\u003e\n\u003cli\u003eSINET™ integrated-controller systems\u003c\/li\u003e\n\u003cli\u003eSINET™ external-controller systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eNot Compatible With:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eLegacy E-BikeKit pedal-assist systems\u003c\/li\u003e\n\u003cli\u003eLegacy E-BikeKit controllers or wiring harnesses\u003c\/li\u003e\n\u003cli\u003eCadence-only pedal-assist connections\u003c\/li\u003e\n\u003cli\u003ePress-fit bottom bracket systems\u003c\/li\u003e\n\u003cli\u003eExternal-bearing crank systems\u003c\/li\u003e\n\u003cli\u003eOne-piece crank systems\u003c\/li\u003e\n\u003cli\u003eThird-party electrical systems unless compatibility has been confirmed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eMatching connector appearance alone does not confirm electrical compatibility. Verify the complete system platform and mechanical fit before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"product-accordion\"\u003e\n\u003csummary\u003eSpecifications\u003c\/summary\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlatform:\u003c\/strong\u003e E-BikeKit SINET™\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Bottom bracket torque and cadence sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBottom Bracket Fit:\u003c\/strong\u003e 68 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrank Interface:\u003c\/strong\u003e Square taper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePedal-Assist Function:\u003c\/strong\u003e Proportional torque-sensing assistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Routing:\u003c\/strong\u003e Through drilled opening in bottom bracket shell\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Grommet:\u003c\/strong\u003e Included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtension Cable:\u003c\/strong\u003e Sold separately\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariants:\u003c\/strong\u003e None\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"product-accordion\"\u003e\n\u003csummary\u003eWhat’s Included\u003c\/summary\u003e\n\n\u003cul\u003e\n\u003cli\u003eOne SINET™ 68 mm bottom bracket torque sensor\u003c\/li\u003e\n\u003cli\u003eOne protective cable-routing grommet\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eNot Included:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eCrankarms\u003c\/li\u003e\n\u003cli\u003eCrankset\u003c\/li\u003e\n\u003cli\u003eBottom bracket tools\u003c\/li\u003e\n\u003cli\u003eDrill or drilling tools\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/dealers.ebikekit.com\/products\/sinet-torque-sensor-extension-cable\"\u003eSINET™ Torque Sensor Extension Cable\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"product-accordion\"\u003e\n\u003csummary\u003eInstallation Notes\u003c\/summary\u003e\n\n\u003cul\u003e\n\u003cli\u003eDisconnect and remove the battery before beginning installation.\u003c\/li\u003e\n\u003cli\u003eConfirm the frame uses a 68 mm threaded bottom bracket shell.\u003c\/li\u003e\n\u003cli\u003eRemove the existing crankarms and bottom bracket using the correct bicycle tools.\u003c\/li\u003e\n\u003cli\u003eConfirm the replacement crankarms use a compatible square-taper interface.\u003c\/li\u003e\n\u003cli\u003eSelect a cable-routing location that avoids welds, frame joints, structural reinforcements, and interference with internal components.\u003c\/li\u003e\n\u003cli\u003eDrill the required cable-routing hole using proper tools and installation practices.\u003c\/li\u003e\n\u003cli\u003eDeburr the opening and install the included grommet before routing the sensor cable.\u003c\/li\u003e\n\u003cli\u003eDo not route the cable through an unprotected metal opening.\u003c\/li\u003e\n\u003cli\u003eInstall and tighten the torque sensor according to the required bottom bracket orientation and torque specifications.\u003c\/li\u003e\n\u003cli\u003eRoute the cable away from chainrings, crankarms, chains, steering components, tires, and sharp edges.\u003c\/li\u003e\n\u003cli\u003eAlign connector arrows and pins before joining the plugs. Do not twist or force the connectors.\u003c\/li\u003e\n\u003cli\u003eAfter installation, verify correct crank clearance and proportional pedal-assist operation before returning the bicycle or trike to service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eProfessional Installation Recommended:\u003c\/strong\u003e This installation requires bicycle drivetrain service and permanent modification of the frame. It should be completed by a qualified bicycle or electric-bike technician familiar with bottom bracket installation, cable routing, and frame modification.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"product-accordion\"\u003e\n\u003csummary\u003eExtension Cable\u003c\/summary\u003e\n\n\u003cp\u003eThe standard sensor cable may not provide sufficient routing length for every frame configuration. Larger bicycle frames, upright trikes, and recumbent trikes commonly require additional cable length.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003ca href=\"https:\/\/dealers.ebikekit.com\/products\/sinet-torque-sensor-extension-cable\"\u003e\u003cstrong\u003eSINET™ Torque Sensor Extension Cable – 59 cm\u003c\/strong\u003e\u003c\/a\u003e is available separately and provides additional reach for cleaner routing with less strain on the cable and connectors.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/dealers.ebikekit.com\/products\/sinet-torque-sensor-extension-cable\"\u003eAdd the SINET™ Torque Sensor Extension Cable to your order.\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"product-accordion\"\u003e\n\u003csummary\u003eDealer Insights\u003c\/summary\u003e\n\n\u003cul\u003e\n\u003cli\u003eProvides smoother, more natural pedal assistance than cadence-only sensing\u003c\/li\u003e\n\u003cli\u003eMeasures both crank movement and rider effort\u003c\/li\u003e\n\u003cli\u003eDesigned for current SINET™ integrated and external-controller systems\u003c\/li\u003e\n\u003cli\u003eBest suited for compatible 68 mm square-taper bottom bracket installations\u003c\/li\u003e\n\u003cli\u003eExtension cable available for trikes, recumbents, and larger frames\u003c\/li\u003e\n\u003cli\u003ePhone, text, and email technical support\u003c\/li\u003e\n\u003cli\u003eFitment and installation guidance available from E-BikeKit technicians\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eDealer Note:\u003c\/strong\u003e Confirm bottom bracket width, crank interface, system platform, cable-routing requirements, and installer capability before supplying this component.\u003c\/p\u003e\n\u003c\/details\u003e","brand":"E-BikeKit","offers":[{"title":"Default Title","offer_id":44619635195946,"sku":null,"price":63.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/4701\/2906\/files\/E-BIKEKIT-SINET-BOTTOM-BRACKET-TORQE-SENSOR-68MM-2.png?v=1784992924","url":"https:\/\/dealers.ebikekit.com\/products\/sinet-bottom-bracket-torque-sensor","provider":"EBK Dealers","version":"1.0","type":"link"}