80cc 2-Stroke Bicycle Engine Kit, Motorized Bike Motor Conversion Kit, Fit for 26" 27" 28" Bikes, Gas Motor Engine Set (80CC Red Engine)

80cc 2-Stroke Bicycle Engine Kit, Motorized Bike Motor Conversion Kit, Fit for 26" 27" 28" Bikes, Gas Motor Engine Set

• Transform an ordinary bicycle into a thrilling motorized ride with our 2-stroke 80cc engine kit. Reach speeds up to 38 km/h, delivering motorcycle-like acceleration and scooter-level convenience for faster, more exciting daily commuting and leisure riding.
• Universally designed to fit most 26" and 28" V-frame bikes, including mountain, cruiser, chopper, and road models. Requires 9–11 inches of clearance between the bottom bracket and top bar, and fits frame tubes with a diameter of 25–29mm (approx. 1 inch)
• Engineered for strong performance with a 47mm bore and 40mm stroke, producing up to 5 HP at 6000 rpm. Highly fuel-efficient at just 2.5L per 100km, providing excellent power output while keeping running costs low.
• Compatible with standard 2-stroke engine oil or 10W-30/10W-40 motor oil. For optimal durability, use a fuel-oil mix ratio of 16:1 during the break-in period, then switch to 20:1 after 500km.
• Easy to install with basic mechanical skills and common hand tools, typically completed in 2–3 hours. For maximum engine protection and longer service life, add a small amount of lubricating oil into the cylinder