TFCFL 125cc 4 Stroke ATV Engine, Semi Auto Transmission with Reverse, Electric Start Air Cooled Single Cylinder, Fit for 50-110cc Chinese ATV Go Kart (Blade/Roketa/Taotao/Coolster), Spark Plug A7TC

TFCFL 125cc Semi Auto ATV Engine with Reverse - Your Ideal Power Upgrade for Off-Road Vehicles​Designed for ATV and Go Kart enthusiasts, the TFCFL 125cc 4-stroke engine is a reliable replacement and upgrade option for 50cc-110cc Chinese-made off-road vehicles. With semi-automatic transmission (3F+1R) and electric start, it combines power, convenience and durability, suitable for both beginners and experienced riders.​Core Technical Specifications​Engine Type: Single Cylinder, 4-Stroke, 2-Valve​Displacement: 120ml (125cc rated)​Cooling System: Air Cooled (metal fins + cooling fan)​Transmission: Semi-Automatic (3 forward, 1 reverse)​Starter: Electric Starter​Ignition Type: CDI​Max Power: 7.64HP(5.7KW)/7500±500Rpm​Max Torque: 8.0N.m/5500±500rpm​Bore & Stroke: 54mm × 49.5mm​Compression Ratio: 9.0:1​Fuel Supply: Carburetor Atomization (PZ22 compatible)​Spark Plug: A7TC​Fuel Grade: ≥87#​Lubrication Capacity: 900ml (SF15W/40-SE)​Why ChooseOur 125cc ATV Engine?​Easy Operation: Semi-auto transmission + reverse gear + electric start, perfect for kids and beginners​Wide Fitment: Direct fit for most Chinese ATV/Go Kart brands (Taotao, Coolster, Roketa, etc.), no modification needed​Durable Construction: Aluminum cylinder head + iron cylinder body + large diameter bearings, long service life​Power Upgrade: Boosts 50-110cc vehicles to 125cc, enhances off-road performance on mud, gravel and hills​Package Includes​1 × 125cc 4-Stroke Main Engine​1 × Intake Pipe​1 × Drive Sprocket​1 × Sprocket Cover​1 × A7TC Spark Plug​

• 【125cc 4-Stroke Powerful Performance】​Single cylinder 4-stroke air-cooled engine with aluminum cylinder head & iron cylinder body, delivers 7.64HP (5.7KW) at 7500±500Rpm and max torque 8.0N.m at 5500±500rpm. Pressure/splash lubrication system ensures stable operation, perfect for upgrading 50cc-110cc ATVs/Go Karts to 125cc power
• 【Semi Auto Transmission with Reverse + Electric Start】​3 forward gears + 1 reverse gear (semi-automatic) design, no manual clutch, super easy for beginners and kids to operate; Electric start system allows quick ignition, saves effort compared to kick starter. Reverse gear is ideal for reversing on slopes or tight spaces, enhancing safety and convenience
• 【Wide Compatibility with Chinese ATV/Go Kart】​Precision engineered to fit most Chinese-made 125cc ATVs/Go Karts, including popular brands: Blade, Kinroad, Roketa, SUNL, Taotao, Coolster, Kazuma, Redcat, Baja and more. Perfect replacement or upgrade engine for 50cc/70cc/90cc/110cc models (same mounting holes, no complex modification)
• 【Durable & Low-Maintenance Design】​Cylinder with metal cooling fins + cooling fan for efficient heat dissipation; Large diameter crankshaft connecting rod bearings improve reliability; Semi-auto multi-plate wet clutch ensures long service life. Simple structure, no radiator needed, daily maintenance (oil change, spark plug replacement) is hassle-free
• 【Package Content & Important Note】​Comes with 1x 125cc engine, intake pipe, drive sprocket, sprocket cover, and A7TC spark plug. NOT included: Carburetor (PZ22 compatible), battery, CDI, voltage regulator, ignition coil (need to reuse your old parts or purchase separately). Fuel requirement: ≥87# gasoline; Lubricant: SF15W/40-SE (900ml capacity)