This is New Ninja JX21-B07 Black Off-Road Buggy Engine.  The innovative JX21-B07 Black engine is the same configuration as the JX21-B07 engine, but with a black anodized cooling head and includes new crankcase, carburetor, backplate, and piston cylinder. The carburetor provides great power that is easy to drive, provides consistent tuning, and is  fuel efficient.  The Ninja B07 engine has a square bore and stroke which has smoother power characteristics and improved fuel consumption.  The DLC coated crankshaft is tungsten weighted.  The lightweight cooling head has a lower center  of gravity and provides exceptional cooling and stable operating temperatures.  Also, new for the Ninja B07 is the rear backplate that includes a steel thrust plate.

Included features:
•  Ninja JX21-B07 Black engine.  3-port configuration delivers great power and fuel consumption.
•  Square bore / stroke design provides smooth power and improved fuel consumption.
•  Easy to tune fuel-efficient 21J4 carburetor.
•  Tungsten weighted and silicone filled crankshaft with DLC coating.
•  Backplate with steel thrust plate.
•  Crankcase with boost bypass processing.
•  P3 turbo glow plug.
•  Aluminum 6.5mm reducer.
•  Dust cap set.

　NINJA JX21-B07 BK