ZTMoto IM70 Iron Maiden - Performance Minarelli Vertical Iron Cylinder 2 Stroke Motorized Bicycle Engine Kit - 70cc Bike Motor

Introducing the Iron Maiden IM70—a cutting-edge bicycle engine that combines advanced engineering with exceptional durability. Drawing inspiration from the renowned Minarelli engine design, the IM70 features a robust iron cylinder, ensuring enhanced longevity and reliable performance for all your motorized biking adventures.

Key Features:

• Vertical Minarelli-Inspired Design - The IM70's architecture is based on the Minarelli horizontal engine, celebrated for its efficient power delivery and performance. With proper port timing these specialized cylinders are an absolute beast.
• Durable Iron Cylinder - Utilizing an iron (blended steel) cylinder for strength and longevity, these cylinders are capable of withstanding high temperatures and pressures, which offers a longer lifespan and unmatched performance.
• Mikuni VM20 Round Slide Carburetor - Mikuni produces the top high performance carburetors in the 2 stroke cycling industry. The VM20 series has components that allow you to adjust your fuel mixture to the precise setting you need for optimal performance.
• Stuffed Crankcase - Improves engine’s power output and efficiency by optimizing air-fuel mixture’s flow, increasing intake velocity, and optimizing charge transfer, leading to better combustion, throttle response, and overall performance.
• Flat Reed Valve & Custom CNC Air Intake - The single flat reed valve flows directly down into the case. Combined with custom CNC spacer plate and CNC air intake design, you get case reed like benefits with a stock engine.

Upgrade your ride with the Iron Maiden IM70 and experience the perfect blend of innovative design and modern engineering. Whether you're commuting or exploring new terrains, the IM70 is crafted to deliver unmatched performance and reliability.

ZTMoto IM70 Additional Features Include:

• 47mm Bore, 40mm Stroke - Actual U.S. engine displacement: 70cc
• Stock Horsepower: 6+HP
• Dual windowed piston
• Upgraded exhaust pipe (48mm flange spacing)
• High performance CDI
• High Performance magneto
• Long Rod (89mm)
• Billet Aluminum CNC intake and spacer
• Stuffed crank case

ZTMOTO IM70 Complete Engine Kit Includes:

• 70cc 2 stroke engine with two piece iron cylinder and head
• Windowed Piston, 2 x Piston Rings, 2 x Wrist pin clips
• Flat Reed valve, CNC air intake & cylinder spacer
• Needle bearing for piston wrist pin
• Mikuni VM20 Performance Carburetor
• LD Z8C spark plug
• Performance CDI and magneto
• Stainless steel Allen bolts
• Cylinder gaskets, intake gasket, exhaust gasket

Mounting Kit & Accessories Included:

• Black tear drop 1/2 gallon gas tank w/ new fuel cap, fuel valve, fuel filter, and fuel line
• 415 Heavy duty chain with chain guard
• Ball bearing chain tensioner
• Ultra quiet muffler
• Throttle assembly w/gooseneck style throttle cable
• Twist throttle and cable with matching grip and kill switch
• Quick release clutch handle
• Large front mount
• Available with 36, 44, or 48 tooth rear sprocket and install kit
• Spark plug socket tool and gear removal tool

Fuel/Oil Ratio

• New Engine (<310 miles): 20:1
• After Break In: 24:1

Fuel consumption: ~100 MPG
Max Speed: 73kmh, 45mph
Max Load Capacity: 125kgs, 275lbs
Approximate engine dimensions: 9" x 9" x 5"
Cylinder comes preassembled

Installation: ZTMoto Iron Maiden IM70 Installation Instructions | Cylinder Assembly Instructions
Troubleshooting: 2-Stroke Troubleshooting Guide