Terms of service

TERMS AND CONDITIONS OF THE MK DEVICES ONLINE STORE
AND THE PROVISION OF ELECTRONIC SERVICES

Last updated: 9 August 2026

§ 1. General information

1. The MK Devices online store, available at https://mkdevicesmoto.com, is operated by:

Hubert Łęczewski
trading as MK Devices
operating as an unregistered business activity under Polish law

Address:
Młodzieżowa 25
95-100 Zgierz
Poland

Email:
hubert.leczewski1@gmail.com

Telephone:
+48 668 195 210

2. These Terms and Conditions set out the rules governing:

– use of the online Store,
– placement and fulfilment of orders,
– conclusion of distance sales contracts,
– payments and delivery,
– submission of complaints,
– provision of electronic services.

3. These Terms and Conditions are made available free of charge in a form that allows them to be saved, reproduced and retained.

4. The Customer should read these Terms and Conditions before placing an order.

§ 2. Definitions

1. Seller – Hubert Łęczewski, trading as MK Devices.

2. Store – the online store available at https://mkdevicesmoto.com.

3. Customer – a natural person, legal person or organisational unit purchasing through the Store.

4. Consumer – a natural person making a purchase that is not directly related to their business or professional activity.

5. Product – a movable item offered in the Store, including in particular the MK Fuel device, supplied accessories and access to the accompanying application.

6. Order – a declaration made by the Customer with the intention of concluding a sales contract for a Product.

7. Sales Contract – a distance contract concluded between the Seller and the Customer through the Store.

§ 3. Technical requirements

1. Use of the Store requires:

– a device with Internet access,
– an up-to-date web browser,
– an active email address,
– support for necessary cookies and JavaScript.

2. Full use of the MK Fuel device may require a compatible phone or tablet, the MK Fuel application, a Bluetooth connection and the granting of required permissions, including access to location services for GPS-based functions.

3. Detailed technical requirements, compatibility information and installation instructions are provided on the Product page and in the user manual.

4. The Customer must use the Store and the Product in accordance with applicable law, accepted standards of conduct, the instructions and the intended purpose of the device.

5. It is prohibited to submit unlawful content through the Store, interfere with its operation or attempt to obtain unauthorised access to information systems.

§ 4. Product information

1. MK Fuel is an additional fuel computer designed for motorcycles equipped with electronic fuel injection (EFI).

2. Before purchasing, the Customer should verify the Product’s compatibility with the motorcycle model, model year and fuel-injection system. In case of doubt, the Customer may contact the Seller before placing an order.

3. Fuel level, fuel consumption and estimated range values are calculated. Their accuracy may be affected by:

– correct installation,
– application settings,
– injector parameters,
– calibration after refuelling,
– electrical-system voltage,
– riding conditions,
– GPS signal quality.

4. Product photographs and visualisations are for presentation purposes. Minor differences in the housing, wiring, accessories or application interface do not affect the Product’s essential characteristics.

5. Nothing in this section excludes the Seller’s liability for conformity of the Product with the contract.

§ 5. Prices

1. Prices displayed in the Store are final prices for the Customer in the currency applicable to the relevant market and include taxes required under applicable law.

2. The Product price does not include delivery charges unless expressly stated otherwise.

3. The delivery charge is shown to the Customer before the order is placed.

4. The Seller may change Product prices. A price change does not affect orders placed before the change takes effect.

5. Promotions apply under the terms and during the period stated in the Store.

§ 6. Placing orders

1. Orders may be placed through the Store 24 hours a day.

2. To place an order, the Customer:

– selects a Product,
– adds it to the cart,
– provides the information required to fulfil the order,
– selects a delivery and payment method,
– checks the order summary,
– confirms the order using a button clearly indicating the obligation to pay.

3. The Customer must provide accurate, complete and current information.

4. After placing the order, the Customer receives an email confirming that the order has been registered.

5. The Sales Contract is concluded when the Seller accepts the order and sends confirmation that it will be fulfilled.

6. The Seller may contact the Customer where:

– the order information is incomplete,
– compatibility needs to be confirmed,
– an obvious pricing or availability error has occurred,
– additional information is required to fulfil the order.

7. If the order cannot be fulfilled, the Seller will notify the Customer and refund all payments received.

§ 7. Payments

1. Available payment methods are displayed during checkout.

2. Payments may be processed by third-party payment providers in accordance with their terms and security rules.

3. An order requiring advance payment may be processed after the payment provider confirms that payment has been received.

4. The Customer should never send the Seller a full payment-card number, CVC code or online-banking login details.

§ 8. Delivery

1. Delivery is available to countries and through methods shown during checkout.

2. The current shipping charge and estimated delivery time are displayed in the cart or during checkout.

3. The order is sent to the address or collection point selected by the Customer.

4. The Customer is responsible for providing an accurate address, postal code, telephone number, email address and, where applicable, the correct parcel locker or collection point.

5. The Customer should inspect the shipment after receiving it. Visible packaging damage should be photographed and reported to the Seller, but failure to do so does not deprive the Consumer of statutory rights.

6. The risk of accidental loss or damage passes to the Consumer when the Product is received by the Consumer or a third party designated by the Consumer.

§ 9. Order cancellation

1. The Customer may request cancellation before dispatch by contacting:

hubert.leczewski1@gmail.com

2. If the shipment has already been dispatched, cancellation may no longer be possible.

3. After receiving the Product, a Consumer may exercise the right of withdrawal in accordance with the Refund Policy.

§ 10. Withdrawal from the contract

1. A Consumer may generally withdraw from an online sales contract without giving a reason within 14 days after receiving the Product.

2. Detailed information concerning:

– submission of a withdrawal statement,
– the return address,
– return shipping costs,
– the refund period,
– responsibility for reduction in the Product’s value

is provided in the Refund Policy published in the Store.

3. The right of withdrawal does not limit rights relating to the Product’s non-conformity with the contract.

§ 11. Complaints and non-conformity of the Product

1. The Seller is responsible to the Consumer for conformity of the Product with the contract in accordance with applicable law.

2. Complaints may be submitted by email to:

hubert.leczewski1@gmail.com

or in writing to:

MK Devices
Hubert Łęczewski
Młodzieżowa 25
95-100 Zgierz
Poland

3. Where possible, the complaint should contain:

– the Customer’s full name,
– order number,
– description of the problem,
– the Customer’s requested remedy,
– contact information,
– photographs or video showing the problem where they may assist in handling the complaint.

4. The absence of a receipt does not deprive the Consumer of the right to submit a complaint where the purchase can be demonstrated in another way.

5. The Seller will respond to a Consumer complaint within 14 days after receiving it.

6. If the Product does not conform to the contract, the Consumer may request repair or replacement and, in circumstances provided by law, a price reduction or withdrawal from the contract.

7. Costs associated with an accepted complaint concerning non-conformity are borne by the Seller.

8. The Seller may reject a complaint where the problem was caused solely by:

– connection contrary to the instructions,
– mechanical damage caused by the user,
– unauthorised modification of the device or wiring,
– installation in an incompatible system,
– use contrary to the Product’s intended purpose,

provided that such circumstances were the actual cause of the reported problem.

§ 12. Electronic services

1. The Seller provides free electronic services through the Store, including:

– browsing the offer,
– using the shopping cart,
– placing orders,
– using contact forms,
– use of a customer account where this function is available,
– receiving information relating to order fulfilment.

2. An electronic-services agreement is concluded when the Customer begins using the relevant Store function.

3. The Customer may stop using electronic services at any time by leaving the website, removing products from the cart or deleting their account where an account has been created.

4. Complaints concerning operation of the Store or electronic services may be submitted to:

hubert.leczewski1@gmail.com

5. The Seller will handle a complaint concerning an electronic service without undue delay and no later than 14 days after receiving it.

§ 13. MK Fuel application

1. The MK Fuel application is used to operate a compatible MK Fuel device and display calculated riding and fuel-consumption information.

2. Availability of individual functions may depend on:

– the mobile operating system,
– granted permissions,
– operation of Bluetooth and GPS,
– correct configuration,
– the application and device-software version.

3. The Customer should install the application only from an official source indicated by the Seller.

4. The Seller may make updates available to improve security, compatibility, performance or appearance.

5. Temporary interruptions to the application or Store may result from maintenance, updates, third-party service providers or failures outside the Seller’s reasonable control.

§ 14. Liability and installation safety

1. The Product must be installed in accordance with the instructions and safety rules applicable to vehicle electrical systems.

2. A person without appropriate knowledge or experience should have the Product installed by a suitably qualified person.

3. The Seller is not liable for damage resulting from actions contrary to the instructions, including incorrect wiring, short circuits, insufficient protection of the device or unauthorised interference with the Product.

4. Nothing in this section excludes or limits any liability that cannot legally be excluded or any statutory rights of the Consumer.

§ 15. Intellectual property

1. Content available in the Store, including the names MK Devices and MK Fuel, logos, photographs, graphics, application interface, instructions and descriptions, is legally protected.

2. Copying, distributing, modifying or commercially using such content without the consent of the authorised party is prohibited, except where permitted by law.

3. Names and trademarks of motorcycle manufacturers belong to their respective owners. Their use in the Store serves only to describe compatibility or intended use and does not indicate an official affiliation with MK Devices.

§ 16. Personal data

1. The rules governing the processing of personal data and the use of cookies are described in the Privacy Policy available in the Store.

2. Information provided when placing an order is used to the extent necessary to fulfil the contract, process payment and delivery, provide customer service, handle complaints and comply with legal obligations.

§ 17. Amendments to these Terms and Conditions

1. The Seller may amend these Terms and Conditions for valid reasons, including:

– changes in applicable law,
– changes in payment or delivery methods,
– introduction of new Store functions,
– technological changes,
– the need to clarify existing provisions.

2. Orders placed before an amendment takes effect remain subject to the version of the Terms and Conditions in force when the order was placed.

3. Amendments do not affect rights already acquired by Customers.

§ 18. Final provisions

1. Contracts concluded through the Store are governed by Polish law, subject to mandatory consumer-protection rules applicable in the Consumer’s country of residence.

2. Matters not regulated by these Terms and Conditions are governed by applicable law, including the Polish Civil Code, the Polish Consumer Rights Act and the Polish Act on the Provision of Electronic Services.

3. These Terms and Conditions do not exclude or limit any rights granted to Consumers under applicable law.

4. These Terms and Conditions enter into force on the date of their publication in the Store.