125cc 4-Stroke Manual Clutch Engine Motor For Dirt Pit Bike – 4UP Style – MenBager
About this item
Drop this 125cc 4-stroke engine into your pit bike or dirt bike project and get ready to ride.
It’s a manual clutch, wet-sump setup, just like the 4UP style engines everyone loves.
Bore and stroke is 54mm x 54mm, displacement is 123.7cc, and it cranks out about 8.7 horsepower at 7500 RPM.
Torque hits 8.0 N.m at 5500 RPM.
Starts up with a kick—no electric start here, just old-school simplicity.
Ignition is CDI, idle sits around 1500 RPM.
Gear ratios are solid: 2.833, 1.706, 1.238, and 0.958.
Comes with a 428 sprocket, 15T with a 17mm bore.
Voltage is 12V.
It’s brand new from MenBager, part number 910974, and includes a 1-year warranty.
Dimensions are about 18.25 x 11 x 11 inches.
Whether you’re swapping a blown motor or building a custom bike, this engine is a solid choice.
New, complete, ready to bolt in.
- Free shipping
- Free 30-day returns
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