High-Performance 2.58HP Engine: Equipped with an advanced 2-stroke engine delivering 2.1KW (2.58HP) of power and 5000 RPM, this bicycle motor kit transforms your ordinary bike into a speed machine capable of reaching top speeds up to 23.61 MPH, perfect for conquering city streets and rugged trails.

Durable & Corrosion-Resistant Build: Crafted from premium aluminum and iron using precision lathe machining and spray painting, this engine kit is built to last, offering superior resistance to impact, rust, and corrosion for reliable long-term outdoor use.

Fuel-Efficient & Long-Range Riding: Designed for economy, the high-efficiency 2-stroke engine consumes approximately only 0.53 gallons of fuel per 62 miles, while the 0.53-gallon tank ensures extended riding range without frequent refueling stops.

Easy Start & Smart Control: Featuring a user-friendly CDI electronic ignition for quick pedal-start capability and a manual clutch for precise speed control, this kit also includes an electronic speedometer to track real-time speed and mileage for a smarter riding experience.

Universal Fitment & Safe Design: Compatible with most 26-28 inch V-frame bicycles, mountain bikes, and road bikes, this motorized bike kit includes safety features like a noise-reducing muffler, anti-slip rubber handles, and compatibility with V-brakes or caliper brakes for secure commuting and adventure cycling.

Specification 

Materials: Aluminum, Iron, Rubber

Process: Lathe Machining, Spray Painting

Color: Black

Assembly Required: Yes

Engine Type: 2-Stroke Single-Cylinder Gasoline Engine

Heat Dissipation Method: Air Cooling

Start Method: Foot Pedal Start

Applicable Brake: V-Shaped Brake, Clamp Brake

Clutch Type: Manual

Drive Position: Front Wheel

Ignition Method: CDI Ignition

Spark Plug Model: Z8CM14 × 1.25

Fuel Type: 90 # Gasoline

Fuel Oil Mixture Ratio: 16:1 (New Equipment), 20:1 (After Driving 500km/310.69 Miles)

Fuel Consumption: 2L/0.53gal/100km/62.14mile

Chain Wheel Teeth: 44 Teeth

Spoke: 36

Number of Chain Teeth: 110

Displacement: 80cc

Horsepower: 2.58hp

Torque: 4N.m

Engine Power: 2.1KW

No Load Speed: 5000RPM

Maximum Speed: 38km/23.61mile/h

Fuel Tank Capacity: 2L/0.53gal

Suitable Bicycle Wheel Size: 85.3-91.86cm/26-28in

Engine Size (L*H): 23*24cm/9.06*9.45in

Package Size: 41.5*41*17cm/16.34*16.14*6.69in

Gross Weight: 11.39kg/25.11lbs

Net Weight: 11kg/24.25lbs

Package Included

1 * 2-Stroke Engine

1 * Muffler

1 * Ignition Coil & CDI

1 * Carburetor

1 * Electronic Speedometer

1 * Chain

1 * Fuel Tank

2 * Rubber Handles

1 * English Instruction

Other Accessories for Assembly  

Notes

• Please read the operating manual completely before use. And pay particular attention to the safety instructions included.
• This product needs to be installed in the middle of the bicycle triangle frame, so please pay attention to the size of the triangle space on the frame. If the space is too small, the air filter of the carburetor may touch the frame.
• The white wire of the magnetic coil does not need to be connected, please just wrap it with electrical tape (not included) for insulation.
• Drivers need to have basic hardware skills and tools, and it takes approximately 2-3 hours to install and fine-tune. If you don’t have experience or are installing the product for the first time, please read our instruction and search online for an "80cc bicycle engine kit". This will be of great help to you and eliminate many faults during the installation process.
• Before starting, this product does not require additional oil to be added to the machine. After a period of time, apply some solid grease (excluding) to the gears inside the casing. Please use two-stroke engine oil (not included) in the fuel tank to mix the fuel. Please store gasoline, engine oil, and mixtures (excluding) in safe containers, and do not add near heat sources or sparks. Please turn off the throttle before parking.
• Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement, and make sure you do not mind before ordering.