We typically process and ship orders within 1-2 business days. Standard shipping times vary depending on your location. You can find more details about our shipping policy on our Shipping & Delivery page.

We offer a 30-day return policy for items in new, unused condition. If you are not satisfied with your purchase, please contact our customer support team to initiate a return. Please note that certain conditions and exclusions may apply. You can find more information on our Returns & Refunds page.

Yes, we offer international shipping to select countries. Please check our Shipping & Delivery page for a list of countries we ship to and additional details.

Once your order is shipped, you will receive a tracking number via email. You can use this tracking number to track the status of your package. If you have any issues with tracking your order, please reach out to our customer support team.

We accept major credit cards (Visa, Mastercard, American Express) as well as PayPal for secure and convenient payment. At this time, we do not accept cash on delivery or personal checks.

The SEMTO engine kit includes all the necessary engine parts for assembly and a detailed instruction manual. Please note that this Semto 2 cylinder engine model kit does not include a starter ignition device. The starter battery (7.4V 2S lithium battery) and ignition module (F-type glow plug) need to be purchased separately. This ensures that users can choose the most suitable accessories according to their needs and provide more customized options. If you have any questions or need more help, please feel free to contact Stirlingkit, we will provide you with technical support and advice. You need to buy it directly from Stirlingkit official website.

Basic tools like screwdrivers, pliers, and wrenches are required. Additionally, for precise assembly, a torque wrench might be helpful. If you plan to fine-tune the engine, a tachometer can also be useful. you can find the tools for Semto engine from Stirlingkit directly.

The assembly process is suitable for hobbyists with some experience in mechanical models. The detailed paper manual provides step-by-step guidance, but beginners may find certain steps challenging. Taking your time and following the instructions carefully is key to a successful build a Semto engine kits.

Yes, the SEMTO ENGINE ST-NF2 is designed to be compatible with RC models, especially when paired with a gearbox. Its compact size and powerful performance make it ideal for enhancing RC vehicles. Stirlingkit provides neccessory modified parts. If you want to print a 3D Car frame body for your Semto engine, I recommend you go for Youtube Scale Addiction for STL file.

This Semto engine runs on 20-25% nitro fuel. It's important to use the correct fuel mixture to ensure optimal performance and longevity of the engine.

Semto engine requires mixed oil lubrication, which involves adding lubricating grease to the fuel. Regular maintenance, including checking the oil levels and ensuring all moving parts are well-lubricated, is essential for smooth operation.

Stirlingkit provides 6 months long warranty life for your engine model. If you encounter any issues or have questions during assembly or operation, feel free to contact our customer support team (service@stirlingkit.com)for assistance.

The SEMTO ENGINE ST-NF2 Nitro Internal Combustion Engine is a versatile powerhouse, perfect for powering RC cars, boats, or even custom-built models, offering thrilling performance with its high RPM and compact design. It's also an excellent tool for educational purposes, allowing students and hobbyists to explore the principles of mechanics and internal combustion through hands-on assembly and experimentation. Whether used in RC models, educational projects, or as a unique gift for engine enthusiasts, the ST-NF2 provides endless possibilities for creativity and learning.

Is the instruction manual available in multiple languages?- Currently, the manual is available in English. If you require assistance with translations or have any specific questions, our support team is here to help.

After use, it’s important to clean the engine thoroughly to remove any residual fuel or grease. Store the engine in a dry, cool place to prevent rust and corrosion.

Always operate the engine in a well-ventilated area. Wear protective gloves and eye protection during assembly and operation. Ensure that all connections are secure before starting the engine, and keep flammable materials away from the engine during operation.

yes. Starting from 2024, all orders will be equipped with black timing wheels, and the old red timing wheels have been discontinued.