KnoxHobbies.com offers our New and impressive GR PRO brand of 50cc "I" Single Cylinder engines Improted from GRpro. Aside from that fact that these engines are a dream to hear and see run, these single cylinder powerhouses are exactly what you need for the those unexpectedly constrained installations. The single cylinder allows you to mount in a smaller cowling area than the 50cc twin without compromising performance. If your build project is restricted on space, this is the engine for you at the right price.

Engine specification:

Piston displacement: 50cc, Output: 4.5hp, Weight: 3 lbs 8oz as shown, Carburetor: Walbro pump type using rear inducted reed, Spark plug: CM6, CDI Ignition: computer controlled auto advance. Ignition voltage 4.8 to 6 volts with built in resistor, Propeller: 2 blade 20x10 @ 7000rpm, Speed range: 1400 to 9000rpm Fuel mix: For 2.5 gallon break-in use 32-1 and thereafter use full synthetic mix.

Also includes: Ignition, Stand-offs, and Muffler.

Limited Warranty: 2yr. on engine and 1yr. on the ignition module.