Description
Product Overview
The Afranti 2 Stroke Bicycle Engine Kit is engineered to give a conventional bicycle the power and excitement of a motorbike while retaining the simplicity of a pedal‑driven platform. Crafted from high‑grade aluminum, each component balances lightweight construction with robust durability, ensuring the kit can withstand the rigors of daily commuting and spirited weekend rides. The kit delivers a peak output of 2.8 kW (approximately 3.8 hp) at 6,000 rpm, providing a smooth acceleration curve that propels the bike to a top speed of around 50 km/h (31 mph). Fuel consumption is remarkably low, averaging 3.8 L per 100 km, thanks to an efficient two‑stroke combustion cycle and a precisely calibrated fuel‑oil mixing ratio of 16:1 for new units, transitioning to 20:1 after the initial 500 km break‑in period.
All essential hardware is included in the package: a forged aluminum crankcase, precision‑machined piston, high‑performance reed valve, and a digital speedometer that displays real‑time speed, RPM, and fuel level. The kit also features upgraded hex socket screws and bolts, which replace the standard hardware that can fracture under high torque. These premium fasteners improve overall structural integrity and simplify future maintenance. The package dimensions of 16.98 × 16.9 × 8.75 inches and a total weight of 11.38 kg make the kit manageable for most users, while the included installation guide walks you through each step with clear diagrams and safety warnings.
Designed for riders who value both performance and practicality, the Afranti kit integrates seamlessly with most standard bicycle frames. The mounting system uses adjustable brackets that accommodate a wide range of frame geometries, ensuring a snug fit without the need for extensive modifications. The engine’s cooling system relies on passive airflow enhanced by a finned cylinder design, eliminating the need for a separate liquid‑cooling circuit and reducing overall maintenance requirements. The digital speedometer, powered by the engine’s electrical system, provides accurate feedback without the need for external batteries, further simplifying the conversion process.
Beyond raw performance, the kit emphasizes rider safety. The engine incorporates a low‑compression start mechanism that reduces the effort required to launch the bike, while the fuel‑mixing system includes a built-in choke to prevent stalling during cold starts. The aluminum construction also dissipates heat efficiently, keeping operating temperatures within safe limits even during prolonged high‑speed runs. All components meet or exceed industry standards for automotive and powersports applications, giving you confidence in the reliability of each part.
In addition to the core engine components, the package supplies a set of essential accessories: a reinforced chain, a high‑traction rear tire, a compact fuel tank with a secure cap, and a set of mounting bolts that are pre‑treated to resist corrosion. The digital speedometer is calibrated for both metric and imperial units, allowing riders worldwide to monitor performance in their preferred system. With a best‑sellers rank of #34 in Powersports Engine Kits, the Afranti kit has proven its popularity among enthusiasts seeking a cost‑effective yet high‑quality conversion solution.
![[Product front view showing all components]](https://www.joltshop.store/wp-content/uploads/2026/06/d337240563d54ad7bd3fb690d0e141d0.jpg)
Usage
The Afranti engine kit is ideal for a variety of riding environments, from urban commuting to off‑road exploration. In city traffic, the added power allows you to keep pace with motor vehicles, reducing travel time and effort on steep inclines. For weekend adventures, the kit’s robust construction and fuel efficiency enable longer rides without frequent refueling stops, making it perfect for scenic routes through countryside roads or light trail paths.
Because the kit is compatible with most standard bicycle frames, it can be installed on commuter bikes, mountain bikes, and even hybrid models. Riders who enjoy weekend camping trips will appreciate the ability to carry a compact fuel tank, providing a reliable power source when electric bikes may fall short. The engine’s quiet two‑stroke operation also makes it suitable for residential areas where noise regulations are a concern, delivering a smooth ride without the roar of larger four‑stroke engines.
For riders new to motorized conversions, the kit’s straightforward installation process—typically completed in 2‑3 hours with basic tools—means you can enjoy the benefits of motorized assistance without extensive mechanical experience. The included digital speedometer helps you monitor speed and engine performance, ensuring you stay within legal limits and maintain optimal fuel consumption. Whether you are a daily commuter looking to shave minutes off your route or an outdoor enthusiast seeking a versatile power boost, the Afranti kit adapts to your lifestyle.
Why Choose Us
Choosing the Afranti 2 Stroke Bicycle Engine Kit means investing in a product backed by rigorous quality control and a commitment to customer satisfaction. Each engine is assembled in a dedicated facility in China, where experienced technicians perform multiple inspections to verify dimensional accuracy, material integrity, and functional performance before the kit leaves the factory. Our partnership with reputable suppliers ensures that the aluminum alloy used meets aerospace‑grade standards, providing a superior strength‑to‑weight ratio compared to generic alternatives.
We understand that after‑sales support is a critical component of the ownership experience. That’s why Afranti offers a responsive service team that replies to inquiries within 24 hours, providing troubleshooting assistance, replacement parts, or guidance on fine‑tuning the engine for optimal performance. Our warranty covers manufacturing defects for a full year, giving you peace of mind that your investment is protected against unforeseen issues.
Environmental responsibility is also a core value of Afranti. The two‑stroke engine is engineered to minimize emissions through precise fuel‑oil mixing and efficient combustion, aligning with modern environmental standards while still delivering the power you expect. By choosing this kit, you contribute to a greener riding experience without sacrificing the thrill of motorized travel.
Key Features
- Lightweight aluminum construction reduces overall bike weight while providing high durability.
- 2.8 kW output delivers strong acceleration and a top speed of 50 km/h for versatile riding.
- Fuel‑efficient two‑stroke design consumes only 3.8 L per 100 km, extending ride range.
- Upgraded hex socket screws and bolts prevent breakage and simplify maintenance.
- Dedicated 24‑hour support team ensures quick assistance and reliable after‑sales service.
FAQ
Can the kit be installed on any bicycle frame?
Yes, the kit includes adjustable mounting brackets that fit most standard bicycle frames, including commuter, mountain, and hybrid models. Minor modifications may be required for unusually sized frames, but the included guide provides step‑by‑step instructions.
What tools are needed for installation?
Basic hand tools such as a set of hex wrenches, screwdrivers, and a torque wrench are sufficient. No specialized equipment or welding is required, making the installation accessible to most DIY enthusiasts.
How often does the engine need maintenance?
Regular maintenance includes checking the fuel‑oil mixture, inspecting the spark plug, and tightening the hex socket bolts after the first 50 km of use. Beyond that, a full service is recommended every 200 km or annually, whichever comes first.
Is the digital speedometer compatible with both metric and imperial units?
Yes, the speedometer can be switched between kilometers per hour and miles per hour via a simple button on the display, allowing riders worldwide to monitor speed in their preferred measurement system.
What is the warranty coverage for the kit?
The Afranti engine kit comes with a one‑year limited warranty covering manufacturing defects. This includes the engine block, piston, and all included accessories. Support is available 24 hours a day for any warranty‑related inquiries.




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