Coospo BK9C cadence sensor
Coospo BK9C cadence sensor - One size is backordered and will ship as soon as it is back in stock.
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Installment Payments
PayPal
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- Transaction fee: free
- Settlement time: instant
With PayPal, you can also pay in 3 convenient interest-free installments.
PLEASE NOTE: the maximum amount eligible for installments per single order is €2,000
Klarna
- Pay in 3 interest-free installments.
- Pay with Visa, Mastercard, Amex, Postepay and major Italian prepaid cards.
- Klarna is available in: Austria, Belgium, Finland, France, Germany, Greece, Ireland, Italy, Netherlands, Portugal, Spain.
PLEASE NOTE: the maximum amount eligible for installments per single order is €3,000
For more information about Klarna: https://www.klarna.com/international/
Scalapay
- Pay in 3 interest-free installments.
- Pay with Visa, Mastercard, Amex, Postepay and major Italian prepaid cards.
- Create a Scalapay account in just 2 minutes – registration is free and approval is immediate.
- Receive your order immediately and split the total into 3 convenient monthly installments, interest-free.
- Scalapay is available in: Italy, Belgium, Germany, Spain, France, Netherlands, Austria, Portugal, Finland.
PLEASE NOTE: the maximum amount eligible for installments per single order is €1,000
- If you purchase with Scalapay, you will receive your order immediately and pay in 3 installments. Please note that the installments will be assigned to Incremento SPV S.r.l., related parties and their assignees, and that you authorize such assignment.
Support
In case of issues with the financing method, overdue installments, errors during account creation or payment method changes, please contact SCALAPAY support.
Heylight
- Pay in 3, 4 or 5 interest-free instalments for purchases up to €3,000
- Interest-bearing financing in up to 36 instalments for purchases up to €10,000
- Once you select Heylight as your payment method, you will be redirected to the financial provider’s page where you will be asked to enter your personal details and upload certain documents to verify your creditworthiness.
- The order will be considered confirmed only after Heylight approves the financing request.
- Heylight is available in Italy only.
PLEASE NOTE: the maximum amount eligible for installments per single order is €5,000
For more information about Heylight: https://heylight.com/en
Garanzia legale europea

Product details
Product details
Coospo BK9C
The Coospo BK9C is a magnet-free cadence sensor designed to be installed on the bicycle crank arm. It detects pedaling cadence and transmits data to a compatible device, so you can monitor your rhythm during training. The detection system uses a dual-sensor hybrid algorithm, without requiring a separate magnet to be positioned.
ABS body and crank-arm mounting
The sensor body is made of ABS, with dimensions of 34.06 × 32.30 × 8.50 mm and a weight of 8.3 g. It is designed to be mounted on the crank arm. The construction is waterproof, while power is supplied by a 220 mAh CR2032 battery, with a stated battery life of 300 hours.
Bluetooth 5.0 and ANT+ transmission
Bluetooth 5.0 and ANT+ connectivity allows the BK9C to connect to compatible bike computers, smartwatches, and fitness apps. To pair it, make sure the device or app supports cadence sensors through one of the available protocols. The transmitted data lets you view cadence while riding on the receiving device.
Technical features
- Model: Coospo BK9C.
- Function: cadence detection.
- Detection system: magnet-free, with dual-sensor hybrid algorithm.
- Mounting position: crank arm.
- Wireless connections: Bluetooth 5.0 and ANT+.
- Body material: ABS.
- Dimensions: 34.06 × 32.30 × 8.50 mm.
- Weight: 8.3 g.
- Battery: 220 mAh CR2032.
- Stated battery life: 300 hours.
Frequently asked questions
Does the Coospo BK9C require a magnet?
No, the sensor detects cadence without using separate magnets.
Where is the sensor installed?
The Coospo BK9C is designed to be mounted on the bicycle crank arm.
Is it compatible with bike computers, smartwatches, and apps?
The sensor transmits via Bluetooth 5.0 and ANT+. The bike computer, smartwatch, or app must support receiving cadence data through one of these protocols.
Which battery does it use and how long does it last?
It uses a 220 mAh CR2032 battery. The stated battery life is 300 hours.
Reviews & Questions (0)
Reviews & Questions (0)
Shipping and delivery times
Shipping and delivery times
Orders are usually shipped within 24-72 hours (1-3 days) from payment receipt. Some items may have longer shipping times (5-7 days). The specific shipping times are indicated on each product page.
FREE SHIPPING (
bikes excluded) from
| € 79.00 | Italy |
| € 129.00 | Europe, Principality of Monaco, and San Marino |
| € 249.00 | Australia, Canada, Japan, Switzerland, Norway |
Shipping costs start from
| € 6.50 | STANDARD SHIPPING in Italy with express courier |
Shipping times and costs may vary depending on the delivery country, chosen service, and weight.
Shipping with InPost service
| € 5.00 | Italy |
| € 12.00 | France, Benelux, Spain, Portugal, Poland |
Bicycle shipping
Shipping costs for all bicycles are fixed as follows.
| € 39.00 | Italy |
| € 49.00 | Europe |
| £ 69.00 | United Kingdom |
| CHF 69.00 | Switzerland |
| € 250.00 | Rest of the world |
Non-EU shipping
Local VAT and any customs duties for shipments of goods to customers outside the European Union (non-EU) will be charged to the recipient and requested by the courier at the time of delivery. If the delivery is not made due to refusal to pay the customs duties (local VAT and any applicable tariffs) requested by the importing country, all costs incurred by us for the return of the goods will be deducted from the refund.
In-store pickup
All online-ordered items can be picked up at the All4cycling store in the province of Varese, Via Gianfranco Miglio 2, 21045 Gazzada Schianno (VA).
For further details, we invite you to review the terms and conditions and the privacy policy.
Returns and refunds
Returns and refunds
- You can request a return within 60 days of delivery.
- Start your request from the Returns and Order Cancellations page by entering your order number.
- Within the first 14 days, you may try the product as necessary to check its features and fit.
- From day 15 to day 60, the product must be unused, intact and complete with original packaging, labels and accessories.
- Use beyond what is necessary may result in a reduction of the refund based on the loss in value of the product.
- The refund is issued, after the returned item has been checked, using the same payment method used for the order.
- If you paid by cash on delivery, please provide a valid IBAN in the return request notes.
- Direct exchanges for size, colour or model are not available: return the item and place a new order.
- For incorrect, damaged or defective products, please contact Customer Service before making the return.
FOR A SAFE RETURN
- Use suitable packaging to protect the product during transport.
- Place the product's original packaging inside an outer shipping package.
- Do not apply adhesive tape, shipping labels or writing directly to the original packaging.
- Return all accessories, manuals, components and any complimentary items received.
- Do not remove tags, labels or seals unless necessary to inspect the product.
- When trying on clothing that you may return, avoid perfume, deodorant or any use that may leave odours or marks.
- Use a trackable shipping service and keep the shipping receipt until the return has been completed.
For full conditions, exclusions and return procedures, please see our Returns and Refunds Policy.
RETURN SHIPPING COSTS
| Italy | FREE return at Poste Italiane post offices and collection points, following the instructions provided |
| Germany & Austria | Fixed cost €6.90 with DHL, deducted from the refund |
| Spain & France | Fixed cost €9.90 with DHL, deducted from the refund |
| Switzerland & Liechtenstein | Fixed cost €12.00 with Swiss Post, deducted from the refund |
| Other Countries | Variable cost depending on the carrier selected, fully payable by the customer |
The costs shown apply to returns made due to a change of mind. If the product is incorrect, damaged or not as described due to a cause attributable to All4cycling, the necessary return shipping costs will not be charged to the customer.


