{"product_id":"bnineteenteam-1-pair-crank-arm-170mm-bicycle-crank-arm-for","title":"Bnineteenteam 170mm Crank Arms for Tongsheng Mid-Drive Motors — Pair, Durable Lightweight Replacement","description":"\u003cb\u003eBnineteenteam 1 Pair 170mm crank arms are replacement bicycle crank arms engineered for Tongsheng mid-drive motor installations on electric, folding, hybrid, mountain and road bikes.\u003c\/b\u003e\n\n\u003cp\u003eThese crank arms are purpose-built to connect a bike's pedal system with a Tongsheng mid-mounted motor. Constructed from high-strength materials and finished with precise workmanship, the pair balances durability and manageable weight for retrofit and repair projects. Each crank arm measures approximately 170mm in arm length, with the overall component dimensions around 21 × 3.8 cm (6.3 × 5.9 inches) and a combined weight near 450 g, making them a compact option for many e-bike platforms.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this crank arm fit Tongsheng mid-drive motors?\u003c\/h3\u003e\n\u003cp\u003eThe Bnineteenteam crank arms are specially designed to mate with Tongsheng-style mid-mounted motors, matching the required interface geometry and mounting points. They are intended as direct replacements or upgrades where the original cranks are worn, bent, or incompatible with your motor setup.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMade for Tongsheng mid-drive motor interface.\u003c\/li\u003e\n  \u003cli\u003eDimensions suited for typical mid-motor spacing and chainline.\u003c\/li\u003e\n  \u003cli\u003eSimplifies swapping damaged or worn crank arms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these crank arms durable and what are they made of?\u003c\/h3\u003e\n\u003cp\u003eThe arms are manufactured from high-strength materials chosen to resist bending and withstand routine cycling stresses. Their fine workmanship and high hardness help maintain shape under load; however, they should be used within recommended torque and riding limits appropriate for e-bike components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-strength, high-hardness construction for longevity.\u003c\/li\u003e\n  \u003cli\u003ePrecision finishing reduces fitment issues and wear.\u003c\/li\u003e\n  \u003cli\u003eLightweight design keeps added mass modest for handling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what tools will I need?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for someone comfortable with bicycle maintenance. The crank arms are compact and light, and they install in the same general procedure as standard crank replacements; basic tools and proper torque settings are required for a secure fit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for straightforward replacement on compatible bikes.\u003c\/li\u003e\n  \u003cli\u003eRequires standard crank pullers or motor-specific removal tools as applicable.\u003c\/li\u003e\n  \u003cli\u003eFollow motor manufacturer torque and alignment guidance during assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these crank arms work on folding, hybrid, mountain, or road bikes?\u003c\/h3\u003e\n\u003cp\u003eYes — the design supports a wide range of bicycle types commonly fitted with Tongsheng mid-drive motors, including folding, hybrid, mountain, and road bikes. Check your motor’s crank interface and frame clearance to confirm compatibility before purchasing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with folding, hybrid, mountain, and road e-bikes using Tongsheng mid-motors.\u003c\/li\u003e\n  \u003cli\u003eCompact dimensions help on bikes with limited chainring clearance.\u003c\/li\u003e\n  \u003cli\u003eVerify spindle and bolt pattern against your current setup for fit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Riders and mechanics replacing or upgrading crank arms on Tongsheng-equipped electric bicycles — especially owners of folding, hybrid, mountain, or road e-bikes who need a sturdy, precision-made 170mm crank pair. This product is aimed at users familiar with bike assembly or working with a mechanic to ensure correct installation and safe operation.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these crank arms compatible with all Tongsheng motors?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They are designed for Tongsheng mid-drive motors, but confirm your motor's spindle interface and bolt pattern before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What tools are required to install the crank arms?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Basic crank removal\/installation tools and the motor manufacturer's recommended torque wrench are typically needed.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Bnineteenteam","offers":[{"title":"Default Title","offer_id":48022262808737,"sku":"B07VJ2Z8MV","price":80.64,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/6532\/5729\/files\/bnineteenteam-front-view-crank-pair.jpg?v=1791330554","url":"https:\/\/canadiansporting.ca\/products\/bnineteenteam-1-pair-crank-arm-170mm-bicycle-crank-arm-for","provider":"Canadian Sporting","version":"1.0","type":"link"}